EDIT: This answer no longer holds true. CSS is well supportedand Javascript (read: JScript) is now pretty much required for any web experience, and few folks disable javascript.
The original answer, as my opinion in 2009.
Off the top of my head:
With CSS, you may have issues with browser support.
With JScript, people can disable jscript (thats what I do).
I believe the preferred method is to do content in HTML, Layout with CSS, and anything dynamic in JScript. So in this instance, you would probably want to take the CSS approach.
Another way to get the EF version you are using is to open the Package Manager Console (PMC) in Visual Studio and type Get-Package at the prompt. The first line with be for EntityFramework and list the version the project has installed.
PM> Get-Package
Id Version Description/Release Notes
-- ------- -------------------------
EntityFramework 5.0.0 Entity Framework is Microsoft's recommended data access technology for new applications.
jQuery 1.7.1.1 jQuery is a new kind of JavaScript Library.... `enter code here`
It displays much more and you may have to scroll back up to find the EF line, but this is the easiest way I know of to find out.
Using simple html,
<div>
<object type="text/html" data="http://validator.w3.org/" width="800px" height="600px" style="overflow:auto;border:5px ridge blue">
</object>
</div>
Or jquery,
<script>
$("#mydiv")
.html('<object data="http://your-website-domain"/>');
</script>
Made a util inspired from Dave's answer
Basically passed in a done
callback to call when the operation is finished.
// Function to timeout if a request is taking too long
const setAsyncTimeout = (cb, timeout = 0) => new Promise((resolve, reject) => {
cb(resolve);
setTimeout(() => reject('Request is taking too long to response'), timeout);
});
This is how I use it:
try {
await setAsyncTimeout(async done => {
const requestOne = await someService.post(configs);
const requestTwo = await someService.get(configs);
const requestThree = await someService.post(configs);
done();
}, 5000); // 5 seconds max for this set of operations
}
catch (err) {
console.error('[Timeout] Unable to complete the operation.', err);
}
You don't have to compute exactly where does the segments intersect, but only understand whether they intersect at all. This will simplify the solution.
The idea is to treat one segment as the "anchor" and separate the second segment into 2 points.
Now, you will have to find the relative position of each point to the "anchored" segment (OnLeft, OnRight or Collinear).
After doing so for both points, check that one of the points is OnLeft and the other is OnRight (or perhaps include Collinear position, if you wish to include improper intersections as well).
You must then repeat the process with the roles of anchor and separated segments.
An intersection exists if, and only if, one of the points is OnLeft and the other is OnRight. See this link for a more detailed explanation with example images for each possible case.
Implementing such method will be much easier than actually implementing a method that finds the intersection point (given the many corner cases which you will have to handle as well).
Update
The following functions should illustrate the idea (source: Computational Geometry in C).
Remark: This sample assumes the usage of integers. If you're using some floating-point representation instead (which could obviously complicate things), then you should determine some epsilon value to indicate "equality" (mostly for the IsCollinear
evaluation).
// points "a" and "b" forms the anchored segment.
// point "c" is the evaluated point
bool IsOnLeft(Point a, Point b, Point c)
{
return Area2(a, b, c) > 0;
}
bool IsOnRight(Point a, Point b, Point c)
{
return Area2(a, b, c) < 0;
}
bool IsCollinear(Point a, Point b, Point c)
{
return Area2(a, b, c) == 0;
}
// calculates the triangle's size (formed by the "anchor" segment and additional point)
int Area2(Point a, Point b, Point c)
{
return (b.X - a.X) * (c.Y - a.Y) -
(c.X - a.X) * (b.Y - a.Y);
}
Of course, when using these functions, one must remember to check that each segment lies "between" the other segment (since these are finite segments, and not infinite lines).
Also, using these functions you can understand whether you've got a proper or improper intersection.
Maven requires JDK to compile. In Eclipse you need to CHANGE/ REPLACE your JRE to the JDK path that your JAVA_HOME points to. Navigate to Window > Preferences > Java > Installed JREs.
Make sure that the maven-compiler-plugin in you pom.xml has the source and target of the java version in your JAVA_HOME
http://learn-automation.com/maven-no-compiler-is-provided-in-this-environment-selenium/
If you think about the problem we're trying to solve, it's not an enum we need at all. We need an object that allows a certain number of values to be associated with eachother; in other words, to define a class.
Jakub Šturc's type-safe enum pattern is the best option I see here.
Look at it:
There is, of course, another way to do this which has not been discussed in this thread, i.e. by way of inheritance of the class containing the TestMethod. In the following example, only one TestMethod has been defined but two test cases have been made.
In Visual Studio 2012, it creates two tests in the TestExplorer:
DemoTest_A12_B4.test
public class Demo
{
int a, b;
public Demo(int _a, int _b)
{
this.a = _a;
this.b = _b;
}
public int Sum()
{
return this.a + this.b;
}
}
public abstract class DemoTestBase
{
Demo objUnderTest;
int expectedSum;
public DemoTestBase(int _a, int _b, int _expectedSum)
{
objUnderTest = new Demo(_a, _b);
this.expectedSum = _expectedSum;
}
[TestMethod]
public void test()
{
Assert.AreEqual(this.expectedSum, this.objUnderTest.Sum());
}
}
[TestClass]
public class DemoTest_A12_B4 : DemoTestBase
{
public DemoTest_A12_B4() : base(12, 4, 16) { }
}
public abstract class DemoTest_B10_Base : DemoTestBase
{
public DemoTest_B10_Base(int _a) : base(_a, 10, _a + 10) { }
}
[TestClass]
public class DemoTest_B10_A5 : DemoTest_B10_Base
{
public DemoTest_B10_A5() : base(5) { }
}
If you use MVC, you don't have this menu (no "Browse With..." menu)
Create first a normal ASP.NET web site.
I'm not quite sure I understand your question properly, but if you want to change the factor levels of cyl
with mutate()
you could do:
df <- mtcars %>% mutate(cyl = factor(cyl, levels = c(4, 6, 8)))
You would get:
#> str(df$cyl)
# Factor w/ 3 levels "4","6","8": 2 2 1 2 3 2 3 1 1 2 ...
If you don't know when data will be added to #data
, you could set an interval to update the element's scrollTop to its scrollHeight every couple of seconds. If you are controlling when data is added, just call the internal of the following function after the data has been added.
window.setInterval(function() {
var elem = document.getElementById('data');
elem.scrollTop = elem.scrollHeight;
}, 5000);
I thought of
SELECT LENGTH('123-345-566') - LENGTH(REPLACE('123-345-566', '-', '')) FROM DUAL;
OpenID is about authentication (ie. proving who you are), OAuth is about authorisation (ie. to grant access to functionality/data/etc.. without having to deal with the original authentication).
OAuth could be used in external partner sites to allow access to protected data without them having to re-authenticate a user.
The blog post "OpenID versus OAuth from the user’s perspective" has a simple comparison of the two from the user's perspective and "OAuth-OpenID: You’re Barking Up the Wrong Tree if you Think They’re the Same Thing" has more information about it.
Auth::user()->products->sum('price');
The documentation is a little light for some of the Collection
methods but all the query builder aggregates are seemingly available besides avg()
that can be found at http://laravel.com/docs/queries#aggregates.
It looks like a location problem because that code is perfectly fine for adding the icon.
Since I don't know your folder structure, I suggest adding a simple check:
File imageCheck = new File("water.bmp");
if(imageCheck.exists())
System.out.println("Image file found!")
else
System.out.println("Image file not found!");
This way if you ever get your path name wrong it will tell you instead of displaying nothing. Exception should be thrown if file would not exist, tho.
You might be looking for this.
It has some known issues though.
From my recent experience, JsonReader#setLenient
basically makes the parser very tolerant, even to allow malformed JSON data.
But for certain data retrieved from your trusted RESTful API(s), this error might be caused by trailing white spaces. In such cases, simply trim
the data would avoid the error:
String trimmed = result1.trim();
Then gson.fromJson(trimmed, T)
might work. Surely this only covers a special case, so YMMV.
If your numbers are always 4 digits long:
=RIGHT(A1,LEN(A1)-5) //'0001 Baseball' returns Baseball
If the numbers are variable (i.e. could be more or less than 4 digits) then:
=RIGHT(A1,LEN(A1)-FIND(" ",A1,1)) //'123456 Baseball’ returns Baseball
</script>
has to be broken up because otherwise it would end the enclosing <script></script>
block too early. Really it should be split between the <
and the /
, because a script block is supposed (according to SGML) to be terminated by any end-tag open (ETAGO) sequence (i.e. </
):
Although the STYLE and SCRIPT elements use CDATA for their data model, for these elements, CDATA must be handled differently by user agents. Markup and entities must be treated as raw text and passed to the application as is. The first occurrence of the character sequence "
</
" (end-tag open delimiter) is treated as terminating the end of the element's content. In valid documents, this would be the end tag for the element.
However in practice browsers only end parsing a CDATA script block on an actual </script>
close-tag.
In XHTML there is no such special handling for script blocks, so any <
(or &
) character inside them must be &escaped;
like in any other element. However then browsers that are parsing XHTML as old-school HTML will get confused. There are workarounds involving CDATA blocks, but it's easiest simply to avoid using these characters unescaped. A better way of writing a script element from script that works on either type of parser would be:
<script type="text/javascript">
document.write('\x3Cscript type="text/javascript" src="foo.js">\x3C/script>');
</script>
Have you tried beforeUnload? This event fires immediately before the page responds to a navigation request, and this should include the modification of the href.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<HTML>
<HEAD>
<TITLE></TITLE>
<META NAME="Generator" CONTENT="TextPad 4.6">
<META NAME="Author" CONTENT="?">
<META NAME="Keywords" CONTENT="?">
<META NAME="Description" CONTENT="?">
</HEAD>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(document).ready(function(){
$(window).unload(
function(event) {
alert("navigating");
}
);
$("#theButton").click(
function(event){
alert("Starting navigation");
window.location.href = "http://www.bbc.co.uk";
}
);
});
</script>
<BODY BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#FF0000" VLINK="#800000" ALINK="#FF00FF" BACKGROUND="?">
<button id="theButton">Click to navigate</button>
<a href="http://www.google.co.uk"> Google</a>
</BODY>
</HTML>
Beware, however, that your event will fire whenever you navigate away from the page, whether this is because of the script, or somebody clicking on a link. Your real challenge, is detecting the different reasons for the event being fired. (If this is important to your logic)
Use jQuery multiple-selector if the only difference between the two functions is the value of the button being triggered.
$("#button_1, #button_2").on("click", function(e) {
e.preventDefault();
$.ajax({type: "POST",
url: "/pages/test/",
data: { id: $(this).val(), access_token: $("#access_token").val() },
success:function(result) {
alert('ok');
},
error:function(result) {
alert('error');
}
});
});
Matt's solution should work, except that it's C++ instead of C, and the initial tell shouldn't be necessary.
unsigned long fsize(char* file)
{
FILE * f = fopen(file, "r");
fseek(f, 0, SEEK_END);
unsigned long len = (unsigned long)ftell(f);
fclose(f);
return len;
}
Fixed your brace for you, too. ;)
Update: This isn't really the best solution. It's limited to 4GB files on Windows and it's likely slower than just using a platform-specific call like GetFileSizeEx
or stat64
.
Don't forget, for strings, you can always use:
String.IsNullOrEmpty(str)
Instead of:
str==null || str==""
You want to use regexp_substr()
for this. This should work for your example:
select regexp_substr(val, '[^/]+/[^/]+', 1, 1) as part1,
regexp_substr(val, '[^/]+$', 1, 1) as part2
from (select 'F/P/O' as val from dual) t
Here, by the way, is the SQL Fiddle.
Oops. I missed the part of the question where it says the last delimiter. For that, we can use regex_replace()
for the first part:
select regexp_replace(val, '/[^/]+$', '', 1, 1) as part1,
regexp_substr(val, '[^/]+$', 1, 1) as part2
from (select 'F/P/O' as val from dual) t
And here is this corresponding SQL Fiddle.
With PowerShell but without the need to create a script:
Invoke-WebRequest https://dist.nuget.org/win-x86-commandline/latest/nuget.exe -OutFile Nuget.exe
#include <stdbool.h>
For someone like me here to copy and paste.
Supplant more for ES6 version of @Chris Nielsen's post.
String.prototype.supplant = function (o) {
return this.replace(/\${([^\${}]*)}/g,
(a, b) => {
var r = o[b];
return typeof r === 'string' || typeof r === 'number' ? r : a;
}
);
};
string = "How now ${color} cow? {${greeting}}, ${greeting}, moo says the ${color} cow.";
string.supplant({color: "brown", greeting: "moo"});
=> "How now brown cow? {moo}, moo, moo says the brown cow."
this.data
presumably contains all the data, so you would need to do something like this:
var stations = [];
var stationData = this.data.stations;
for (var i = 0; i < stationData.length; i++) {
stations.push(
<div key={stationData[i].call} className="station">
Call: {stationData[i].call}, Freq: {stationData[i].frequency}
</div>
)
}
render() {
return (
<div className="stations">{stations}</div>
)
}
Or you can use map
and arrow functions if you're using ES6:
const stations = this.data.stations.map(station =>
<div key={station.call} className="station">
Call: {station.call}, Freq: {station.frequency}
</div>
);
You can use array to handle several button click listener in android like this: here i am setting button click listener for n buttons by using array as:
Button btn[] = new Button[n];
NOTE: n is a constant positive integer
Code example:
//class androidMultipleButtonActions
package a.b.c.app;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class androidMultipleButtonActions extends Activity implements OnClickListener{
Button btn[] = new Button[3];
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
btn[0] = (Button) findViewById(R.id.Button1);
btn[1] = (Button) findViewById(R.id.Button2);
btn[2] = (Button) findViewById(R.id.Button3);
for(int i=0; i<3; i++){
btn[i].setOnClickListener(this);
}
}
public void onClick(View v) {
if(v == findViewById(R.id.Button1)){
//do here what u wanna do.
}
else if(v == findViewById(R.id.Button2)){
//do here what u wanna do.
}
else if(v == findViewById(R.id.Button3)){
//do here what u wanna do.
}
}
}
Note: First write an main.xml file if u dont know how to write please mail to: [email protected]
I know I am 3 years late on this thread, however still providing my 2 cents for similar cases in future.
I recently faced the same issue/error in my cluster. The JOB would always get to some 80%+ reduction and fail with the same error, with nothing to go on in the execution logs either. Upon multiple iterations and research I found that among the plethora of files getting loaded some were non-compliant with the structure provided for the base table(table being used to insert data into partitioned table).
Point to be noted here is whenever I executed a select query for a particular value in the partitioning column or created a static partition it worked fine as in that case error records were being skipped.
TL;DR: Check the incoming data/files for inconsistency in the structuring as HIVE follows Schema-On-Read philosophy.
If you're using a single reference to the object, then the object can kill itself by resetting that outside reference to itself, as in:
class Zero:
pOne = None
class One:
pTwo = None
def process(self):
self.pTwo = Two()
self.pTwo.dothing()
self.pTwo.kill()
# now this fails:
self.pTwo.dothing()
class Two:
def dothing(self):
print "two says: doing something"
def kill(self):
Zero.pOne.pTwo = None
def main():
Zero.pOne = One() # just a global
Zero.pOne.process()
if __name__=="__main__":
main()
You can of course do the logic control by checking for the object existence from outside the object (rather than object state), as for instance in:
if object_exists:
use_existing_obj()
else:
obj = Obj()
You can use Arrays.copyOf()
with a little reflection to make a nice helper function.
public class ArrayHelper {
public static <T> T[] push(T[] arr, T item) {
T[] tmp = Arrays.copyOf(arr, arr.length + 1);
tmp[tmp.length - 1] = item;
return tmp;
}
public static <T> T[] pop(T[] arr) {
T[] tmp = Arrays.copyOf(arr, arr.length - 1);
return tmp;
}
}
Usage:
String[] items = new String[]{"a", "b", "c"};
items = ArrayHelper.push(items, "d");
items = ArrayHelper.push(items, "e");
items = ArrayHelper.pop(items);
Results
Original: a,b,c
Array after push calls: a,b,c,d,e
Array after pop call: a,b,c,d
I case of tomcat 7 the role has changed from manager to manager-gui so set it as below in the tomcat-user.xml file.
Tested IE, FF, Chrome and works in all.
setTimeout(function () { window.print(); }, 500);
window.onfocus = function () { setTimeout(function () { window.close(); }, 500); }
You've nearly got it:
DECLARE @myVariable nvarchar(max) = 'hello world';
See here for the docs
For the quotes, SQL Server uses apostrophes, not quotes:
DECLARE @myVariable nvarchar(max) = 'John said to Emily "Hey there Emily"';
Use double apostrophes if you need them in a string:
DECLARE @myVariable nvarchar(max) = 'John said to Emily ''Hey there Emily''';
in JetPack it work for me
NavigationUI.setupWithNavController(vb.toolbar, nav)
vb.toolbar.navigationIcon = ResourcesCompat.getDrawable(resources, R.drawable.icon_home, null)
Consider
var x = document.getElementById("age");
Here x
is the element with id="age"
.
Now look at the following line
var age = document.getElementById("age").value;
this means you are getting the value of the element which has id="age"
3 ways to do this:
In C Language (Command Line Tool) Works with Objective C, too:
printf("Hello World");
In Objective C:
NSLog(@"Hello, World!");
In Objective C with variables:
NSString * myString = @"Hello World";
NSLog(@"%@", myString);
In the code with variables, the variable created with class, NSString was outputted be NSLog. The %@ represents text as a variable.
That only means that an undefined column or parameter name was detected. The errror that DB2 gives should point what that may be:
DB2 SQL Error: SQLCODE=-206, SQLSTATE=42703, SQLERRMC=[THE_UNDEFINED_COLUMN_OR_PARAMETER_NAME], DRIVER=4.8.87
Double check your table definition. Maybe you just missed adding something.
I also tried google-ing this problem and saw this:
http://www.coderanch.com/t/515475/JDBC/databases/sql-insert-statement-giving-sqlcode
you can also add animation in your activity, in onCreate method like below becasue overridePendingTransition is not working with some mobile, or it depends on device settings...
View view = findViewById(android.R.id.content);
Animation mLoadAnimation = AnimationUtils.loadAnimation(getApplicationContext(), android.R.anim.fade_in);
mLoadAnimation.setDuration(2000);
view.startAnimation(mLoadAnimation);
After some googling I found this:
curl -c cookie.txt -d "LoginName=someuser" -d "password=somepass" https://oursite/a
curl -b cookie.txt https://oursite/b
No idea if it works, but it might lead you in the right direction.
If you just want the date:
SELECT MIN(date) as EarliestDate
FROM YourTable
WHERE id = 2
If you want all of the information:
SELECT TOP 1 id, name, score, date
FROM YourTable
WHERE id = 2
ORDER BY Date
Prevent loops when you can. Loops often lead to cursors, and cursors are almost never necessary and very often really inefficient.
SUM is used to sum the value in a column for multiple rows. You can just add your columns together:
select tblExportVertexCompliance.TotalDaysOnIncivek + tblExportVertexCompliance.IncivekDaysOtherSource AS [Total Days on Incivek]
DeepCompare method to compare two json objects..
deepCompare = (arg1, arg2) => {_x000D_
if (Object.prototype.toString.call(arg1) === Object.prototype.toString.call(arg2)){_x000D_
if (Object.prototype.toString.call(arg1) === '[object Object]' || Object.prototype.toString.call(arg1) === '[object Array]' ){_x000D_
if (Object.keys(arg1).length !== Object.keys(arg2).length ){_x000D_
return false;_x000D_
}_x000D_
return (Object.keys(arg1).every(function(key){_x000D_
return deepCompare(arg1[key],arg2[key]);_x000D_
}));_x000D_
}_x000D_
return (arg1===arg2);_x000D_
}_x000D_
return false;_x000D_
}_x000D_
_x000D_
console.log(deepCompare({a:1},{a:'1'})) // false_x000D_
console.log(deepCompare({a:1},{a:1})) // true
_x000D_
Please first you set your date format as like 12-12-2012
After use this function it's work properly;
$date = date('d-m-Y',strtotime("12-12-2012 +2 Months");
Here 12-12-2012 is your date and +2 Months is increment of the month;
You also increment of Year, Date
strtotime("12-12-2012 +1 Year");
Ans is 12-12-2013
I prefer the following, which is cleaner:
x = [1, 2, 3];
g=sprintf('%d ', x);
fprintf('Answer: %s\n', g)
which outputs
Answer: 1 2 3
Here's the issue: You can't specify font weights that don't exist in the font set from Google. Click on the SEE SPECIMEN link below the font, then scroll down to the STYLES section. There you'll see each of the "styles" available for that particular font. Sadly Google doesn't list the CSS font weights for each style. Here's how the names map to CSS font weight numbers:
Thin 100
Extra Light 200
Light 300
Regular 400
Medium 500
Semi-Bold 600
Bold 700
Extra-Bold 800
Black 900
Note that very few fonts come in all 9 weights.
connect your server from mysqlworkbench and run this command-> ALTER USER 'root'@'localhost' IDENTIFIED BY 'yourpassword';
Here is a short and fast in-memory solution that I came up with utilizing the Table Valued Constructors introduced in SQL Server 2008:
It will return 1,000,000 rows, however you can either add/remove CROSS JOINs, or use TOP clause to modify this.
;WITH v AS (SELECT * FROM (VALUES(0),(0),(0),(0),(0),(0),(0),(0),(0),(0)) v(z))
SELECT N FROM (SELECT ROW_NUMBER() OVER (ORDER BY v1.z)-1 N FROM v v1
CROSS JOIN v v2 CROSS JOIN v v3 CROSS JOIN v v4 CROSS JOIN v v5 CROSS JOIN v v6) Nums
Note that this could be quickly calculated on the fly, or (even better) stored in a permanent table (just add an INTO
clause after the SELECT N
segment) with a primary key on the N
field for improved efficiency.
Following is the util function to get current timestamp in milliseconds:
#include <sys/time.h>
long long current_timestamp() {
struct timeval te;
gettimeofday(&te, NULL); // get current time
long long milliseconds = te.tv_sec*1000LL + te.tv_usec/1000; // calculate milliseconds
// printf("milliseconds: %lld\n", milliseconds);
return milliseconds;
}
About timezone:
gettimeofday() support to specify timezone, I use NULL, which ignore the timezone, but you can specify a timezone, if need.
@Update - timezone
Since the long
representation of time is not relevant to or effected by timezone itself, so setting tz
param of gettimeofday() is not necessary, since it won't make any difference.
And, according to man page of gettimeofday()
, the use of the timezone
structure is obsolete, thus the tz
argument should normally be specified as NULL, for details please check the man page.
fopen()
will open a resource in the same directory as the file executing the command. In other words, if you're just running the file ~/test.php, your script will create ~/myText.txt.
This can get a little confusing if you're using any URL rewriting (such as in an MVC framework) as it will likely create the new file in whatever the directory contains the root index.php file.
Also, you must have correct permissions set and may want to test before writing to the file. The following would help you debug:
$fp = fopen("myText.txt","wb");
if( $fp == false ){
//do debugging or logging here
}else{
fwrite($fp,$content);
fclose($fp);
}
I know there are many answers for this, but to me, this answer, by Robert Harvey, summarized it much more clearly:
A stable sort is one which preserves the original order of the input set, where the [unstable] algorithm does not distinguish between two or more items.
I had a component declared without the styleUrls property, like this:
@Component({
selector: 'app-server',
templateUrl: './server.component.html'
})
instead of:
@Component({
selector: 'app-server',
templateUrl: './server.component.html',
styleUrls: ['./server.component.css']
})
Adding in the styleUrls property solved the issue.
Let me give you an example,
jest
for testing and they use mocha
. Do you want them to install jest
as well? Just To run your library?No. right? That's why they are in devDependencies
.
When someone does, npm i yourPackage
only the libraries required to RUN your library will be installed. Other libraries you used to bundle your code with or testing and mocking will not be installed because you put them in devDependencies
. Pretty neat right?
So, Why do the developers need to expose the devDependancies?
Let's say your package is an open source package and 100s of people are sending pull requests to your package. Then how they will test the package? They will git clone
your repo and when they would do an npm i
the dependencies as well as devDependencies.
Because they are not using your package. They are developing the package further, thus, in order to test your package they need to pass the existing test cases as well write new. So, they need to use your devDependencies
which contain all the testing/building/mocking libraries that YOU used.
In addition to what was already posted you should know that since Java 8 we can shorten our code and write it like:
Collection.sort(yourList, Comparator.comparing(YourClass::getFieldToSortOn));
or since List now have sort
method
yourList.sort(Comparator.comparing(YourClass::getFieldToSortOn));
Since Java 8, functional interfaces (interfaces with only one abstract method - they can have more default or static methods) can be easily implemented using:
arguments -> body
source::method
.Since Comparator<T>
has only one abstract method int compare(T o1, T o2)
it is functional interface.
So instead of (example from @BalusC answer)
Collections.sort(contacts, new Comparator<Contact>() {
public int compare(Contact one, Contact other) {
return one.getAddress().compareTo(other.getAddress());
}
});
we can reduce this code to:
Collections.sort(contacts, (Contact one, Contact other) -> {
return one.getAddress().compareTo(other.getAddress());
});
We can simplify this (or any) lambda by skipping
{return
... }
So instead of
(Contact one, Contact other) -> {
return one.getAddress().compareTo(other.getAddress();
}
we can write
(one, other) -> one.getAddress().compareTo(other.getAddress())
Also now Comparator
has static methods like comparing(FunctionToComparableValue)
or comparing(FunctionToValue, ValueComparator)
which we could use to easily create Comparators which should compare some specific values from objects.
In other words we can rewrite above code as
Collections.sort(contacts, Comparator.comparing(Contact::getAddress));
//assuming that Address implements Comparable (provides default order).
Building on Lauritz` answer, here's a version with the following changes
__call__
instead of __getitem__
from bisect import bisect_right
class Interpolate:
def __init__(self, x_list, y_list):
if any(y - x <= 0 for x, y in zip(x_list, x_list[1:])):
raise ValueError("x_list must be in strictly ascending order!")
self.x_list = x_list
self.y_list = y_list
intervals = zip(x_list, x_list[1:], y_list, y_list[1:])
self.slopes = [(y2 - y1) / (x2 - x1) for x1, x2, y1, y2 in intervals]
def __call__(self, x):
if not (self.x_list[0] <= x <= self.x_list[-1]):
raise ValueError("x out of bounds!")
if x == self.x_list[-1]:
return self.y_list[-1]
i = bisect_right(self.x_list, x) - 1
return self.y_list[i] + self.slopes[i] * (x - self.x_list[i])
Example usage:
>>> interp = Interpolate([1, 2.5, 3.4, 5.8, 6], [2, 4, 5.8, 4.3, 4])
>>> interp(4)
5.425
pypsrp - Python PowerShell Remoting Protocol Client library
At a basic level, you can use this library to;
Execute a cmd command
Run another executable
Execute PowerShell scripts
Copy a file from the localhost to the remote Windows host
Fetch a file from the remote Windows host to the localhost
Create a Runspace Pool that contains one or multiple PowerShell pipelines and execute them asynchronously
Support for a reference host base implementation of PSRP for interactive scripts
Let's assume the next point : the hackers steal our database including the users and password (encrypted). And the hackers created a fake account with a password that they know.
MD5 is weak because its short and popular and practically every hash generation without password is weak of a dictionary attack. But..
So, let's say that we are still using MD5 with a SALT. The hackers don't know the SALT but they know the password of a specific user. So they can test : ?????12345 where 12345 is the know password and ????? is the salt. The hackers sooner or later can guess the SALT.
However, if we used a MD5+SALT and we applied MD5, then there is not way to recover the information. However, i repeat, MD5 is still short.
For example, let's say that my password is : 12345. The SALT is BILLCLINTON
md5 : 827ccb0eea8a706c4c34a16891f84e7b
md5 with the hash : 56adb0f19ac0fb50194c312d49b15378
mD5 with the hash over md5 : 28a03c0bc950decdd9ee362907d1798a I tried to use those online service and i found none that was able to crack it. And its only MD5! (may be as today it will be crackeable because i generated the md5 online)
If you want to overkill then SHA256 is more than enough if its applied with a salt and twice.
tldr MD5(HASH+MD5(password)) = ok but short, SHA256 is more than enough.
I used this code to solve this problem.
<a href="https://twitter.com/intent/tweet?url=myUrl&text=myTitle" target="_blank"><img src="path_to_my_image"/></a>
You can check the tweet-button documentation here tweet-button
Regex regex = new Regex("%download#(\\d+?)%", RegexOptions.SingleLine);
Matches m = regex.Matches(input);
I think will do the trick (not tested).
Something like this should do it too :
$last = $wpdb->get_row("SHOW TABLE STATUS LIKE 'table_name'");
$lastid = $last->Auto_increment;
If you really want a matrix, you might be better off using numpy
. Matrix operations in numpy
most often use an array type with two dimensions. There are many ways to create a new array; one of the most useful is the zeros
function, which takes a shape parameter and returns an array of the given shape, with the values initialized to zero:
>>> import numpy
>>> numpy.zeros((5, 5))
array([[ 0., 0., 0., 0., 0.],
[ 0., 0., 0., 0., 0.],
[ 0., 0., 0., 0., 0.],
[ 0., 0., 0., 0., 0.],
[ 0., 0., 0., 0., 0.]])
Here are some other ways to create 2-d arrays and matrices (with output removed for compactness):
numpy.arange(25).reshape((5, 5)) # create a 1-d range and reshape
numpy.array(range(25)).reshape((5, 5)) # pass a Python range and reshape
numpy.array([5] * 25).reshape((5, 5)) # pass a Python list and reshape
numpy.empty((5, 5)) # allocate, but don't initialize
numpy.ones((5, 5)) # initialize with ones
numpy
provides a matrix
type as well, but it is no longer recommended for any use, and may be removed from numpy
in the future.
The META-INF folder is the home for the MANIFEST.MF file. This file contains meta data about the contents of the JAR. For example, there is an entry called Main-Class that specifies the name of the Java class with the static main() for executable JAR files.
Like this?
public static void Test()
{
using (var image = Image.FromFile(@"c:\logo.png"))
using (var newImage = ScaleImage(image, 300, 400))
{
newImage.Save(@"c:\test.png", ImageFormat.Png);
}
}
public static Image ScaleImage(Image image, int maxWidth, int maxHeight)
{
var ratioX = (double)maxWidth / image.Width;
var ratioY = (double)maxHeight / image.Height;
var ratio = Math.Min(ratioX, ratioY);
var newWidth = (int)(image.Width * ratio);
var newHeight = (int)(image.Height * ratio);
var newImage = new Bitmap(newWidth, newHeight);
using (var graphics = Graphics.FromImage(newImage))
graphics.DrawImage(image, 0, 0, newWidth, newHeight);
return newImage;
}
For conversion,you can create ~/.my.cnf
file in host:
[Mysql]
user=root
password=yourpass
host=127.0.0.1
port=3306
Then next time just run mysql
for mysql client to open connection.
Going to keep this pithier, this is already asked and answered above .
I'd step back however and answer it slightly differently, the docker engine itself adds orchestration as one of its extras and this is the disruptive part. Once you start running an app as a combination of containers running 'somewhere' across multiple container engines it gets really exciting. Robustness, Horizontal Scaling, complete abstraction from the underlying hardware, i could go on and on...
Its not just Docker that gives you this, in fact the de facto Container Orchestration standard is Kubernetes which comes in a lot of flavours, a Docker one, but also OpenShift, SuSe, Azure, AWS...
Then beneath K8S there are alternative container engines; the interesting ones are Docker and CRIO - recently built, daemonless, intended as a container engine specifically for Kubernetes but immature. Its the competition between these that I think will be the real long term choice for a container engine.
The tibble
package now has a dedicated function that converts row names to an explicit variable.
library(tibble)
rownames_to_column(mtcars, var="das_Auto") %>% head
Gives:
das_Auto mpg cyl disp hp drat wt qsec vs am gear carb
1 Mazda RX4 21.0 6 160 110 3.90 2.620 16.46 0 1 4 4
2 Mazda RX4 Wag 21.0 6 160 110 3.90 2.875 17.02 0 1 4 4
3 Datsun 710 22.8 4 108 93 3.85 2.320 18.61 1 1 4 1
4 Hornet 4 Drive 21.4 6 258 110 3.08 3.215 19.44 1 0 3 1
5 Hornet Sportabout 18.7 8 360 175 3.15 3.440 17.02 0 0 3 2
6 Valiant 18.1 6 225 105 2.76 3.460 20.22 1 0 3 1
OCV goes out of its way to make sure you can't do this without knowing the element type, but if you want an easily codable but not-very-efficient way to read it type-agnostically, you can use something like
double val=mean(someMat(Rect(x,y,1,1)))[channel];
To do it well, you do have to know the type though. The at<> method is the safe way, but direct access to the data pointer is generally faster if you do it correctly.
There are generaly two options, because docker doesn't support this feature now:
Create your own script, which will act like runner for your command. For example:
#!/bin/bash
export VAR1=VAL1
export VAR2=VAL2
your_cmd
Run your command following way:
docker exec -i CONTAINER_ID /bin/bash -c "export VAR1=VAL1 && export VAR2=VAL2 && your_cmd"
I, too, encountered this problem while trying to build a plugin using Visual Studio 2017 on my horribly messed-up workplace computer. If you search the internet for "unable to find resgen.exe," you can find all this advice that's like 'just use regedit to edit your Windows Registry and make a new key here and copy-and-paste the contents of this folder into this other folder, blah blah blah.'
I spent weeks just messing up my Windows Registry with regedit, probably added a dozen sub-keys and copy-pasted ResGen.exe into many different directories, sometimes putting it in a 'bin' folder, sometimes just keeping it in the main folder, etc.
In the end, I realized, "Hey, if Visual Studio gave a more detailed error message, none of this would be a problem." So, in order to get more details on the error, I ran MSBuild.exe directly on my *.csproj file from the command line:
"C:/Windows/Microsoft.NET/Framework/v4.0.3.0319/MSBuild.exe C:/Users/Todd/Plugin.csproj -fl -flp:logfile="C:/Users/Todd/Desktop/error_log.log";verbosity=diagnostic"
Of course, you'll have to change the path details to fit your situation, but be sure to put 1) the complete path to MSBuild.exe 2) the complete path to your *.csproj file 3) the -fl -flp:logfile= part, which will tell MSBuild to create a log file of each step it took in the process, 4) the location you would like the *.log file to be saved and 5) ;verbosity=diagnostic, which basically just tells MSBuild to include TONS of details in the *.log file.
After you do this, the build will fail as always, but you will be left with a *.log file showing exactly where MSBuild looked for your ResGen.exe file. In my case, near the bottom of the *.log file, I found:
Compiling plug-in resources (Task ID:41)
Looking in key SOFTWARE\WOW6432Node\Microsoft\Microsoft SDKs\NETFXSDK\4.6.2\WinSDK-NetFx40Tools-x86 (Task ID:41)
Looking in key SOFTWARE\WOW6432Node\Microsoft\Microsoft SDKs\NETFXSDK\4.6.1\WinSDK-NetFx40Tools-x86 (Task ID:41)
Looking in key SOFTWARE\WOW6432Node\Microsoft\Microsoft SDKs\NETFXSDK\4.6\WinSDK-NetFx40Tools-x86 (Task ID:41)
Looking in key SOFTWARE\WOW6432Node\Microsoft\Microsoft SDKs\Windows\v8.1a\WinSDK-NetFx40Tools-x86 (Task ID:41)
Looking in key SOFTWARE\WOW6432Node\Microsoft\Microsoft SDKs\Windows\v8.0a\WinSDK-NetFx40Tools-x86 (Task ID:41)
MSBUILD: error : Failed to locate ResGen.exe and unable to compile plug-in resource file "C:/Users/Todd/PluginResources.resx"
So basically, MSBuild looked in five separate directories for ResGen.exe, then gave up. This is the kind of detail you just can't get from the Visual Studio error message, and it solves the problem: simply use regedit to create a key for any one of those five locations, and put the value "InstallationFolder" in the key, which should point to the folder in which your ResGen.exe resides (in my case it was "C:\Program Files\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.7.2 Tools").
If you're a humanities major like myself with no background in computers, you may be tempted to just edit the heck out of your Windows Registry and copy-paste ResGen.exe all over the place when faced with an error like this (which is of course, bad practice). It's better to follow the procedure outlined above: 1) Run MSBuild.exe directly on your *.csproj file to find out the exact location MSBuild is looking for ResGen.exe then 2) edit your Windows Registry precisely so that MSBuild can find ResGen.exe.
Not with pure HTML as far as I know.
But with JS or PHP or another scripting language such as JSP, you can do it very easily with a for loop.
Example in PHP:
<select>
<?php
for ($i=1; $i<=100; $i++)
{
?>
<option value="<?php echo $i;?>"><?php echo $i;?></option>
<?php
}
?>
</select>
You said you didn't want to use a translucent Activity, but that seems to be the best way to do this:
Theme.Translucent.NoTitleBar
.setContentView()
.onCreate()
, start your Service with startService()
.finish()
once you've started the Service.In other words, your Activity doesn't have to be visible; it can simply make sure your Service is running and then exit, which sounds like what you want.
I would highly recommend showing at least a Toast notification indicating to the user that you are launching the Service, or that it is already running. It is very bad user experience to have a launcher icon that appears to do nothing when you press it.
Another approach would be to leverage the INSERT ALL
syntax from oracle,
INSERT ALL
INTO table1(email, campaign_id) VALUES (email, campaign_id)
WITH source_data AS
(SELECT '[email protected]' email,100 campaign_id
FROM dual
UNION ALL
SELECT '[email protected]' email,200 campaign_id
FROM dual)
SELECT email
,campaign_id
FROM source_data src
WHERE NOT EXISTS (SELECT 1
FROM table1 dest
WHERE src.email = dest.email
AND src.campaign_id = dest.campaign_id);
INSERT ALL
also allow us to perform a conditional insert into multiple tables based on a sub query as source.
There are some really clean and nice examples are there to refer.
Try this
chdir /d D:\Work\Root
Enjoy rooting ;)
In order to kill use:
killall -9 /usr/bin/node
To reload use:
killall -12 /usr/bin/node
The below query will work fine as per your question.
SELECT M1.*
FROM MESSAGES M1,
(
SELECT SUBSTR(Others_data,1,2),MAX(Others_data) AS Max_Others_data
FROM MESSAGES
GROUP BY 1
) M2
WHERE M1.Others_data = M2.Max_Others_data
ORDER BY Others_data;
I came across a similar issue. However this issue was caused because of the way i designed the pages to bring the requests in. I placed all of my .js files as the last thing to be applied to the page, therefore they are at the end of my document. The .js files have all my functions include. The script manager seems that to be able to call this function it needs the js file already present with the function being called at the time of load. Hope this helps anyone else.
You can easily convert to xml format using online converters:
I have converted the list:
<?xml version="1.0" encoding="UTF-8" ?>
<countries>
<code>+7 840</code>
<name>Abkhazia</name>
</countries>
<countries>
<code>+93</code>
<name>Afghanistan</name>
</countries>
<countries>
<code>+355</code>
<name>Albania</name>
</countries>
<countries>
<code>+213</code>
<name>Algeria</name>
</countries>
<countries>
<code>+1 684</code>
<name>American Samoa</name>
</countries>
<countries>
<code>+376</code>
<name>Andorra</name>
</countries>
<countries>
<code>+244</code>
<name>Angola</name>
</countries>
<countries>
<code>+1 264</code>
<name>Anguilla</name>
</countries>
<countries>
<code>+1 268</code>
<name>Antigua and Barbuda</name>
</countries>
<countries>
<code>+54</code>
<name>Argentina</name>
</countries>
<countries>
<code>+374</code>
<name>Armenia</name>
</countries>
<countries>
<code>+297</code>
<name>Aruba</name>
</countries>
<countries>
<code>+247</code>
<name>Ascension</name>
</countries>
<countries>
<code>+61</code>
<name>Australia</name>
</countries>
<countries>
<code>+672</code>
<name>Australian External Territories</name>
</countries>
<countries>
<code>+43</code>
<name>Austria</name>
</countries>
<countries>
<code>+994</code>
<name>Azerbaijan</name>
</countries>
<countries>
<code>+1 242</code>
<name>Bahamas</name>
</countries>
<countries>
<code>+973</code>
<name>Bahrain</name>
</countries>
<countries>
<code>+880</code>
<name>Bangladesh</name>
</countries>
<countries>
<code>+1 246</code>
<name>Barbados</name>
</countries>
<countries>
<code>+1 268</code>
<name>Barbuda</name>
</countries>
<countries>
<code>+375</code>
<name>Belarus</name>
</countries>
<countries>
<code>+32</code>
<name>Belgium</name>
</countries>
<countries>
<code>+501</code>
<name>Belize</name>
</countries>
<countries>
<code>+229</code>
<name>Benin</name>
</countries>
<countries>
<code>+1 441</code>
<name>Bermuda</name>
</countries>
<countries>
<code>+975</code>
<name>Bhutan</name>
</countries>
<countries>
<code>+591</code>
<name>Bolivia</name>
</countries>
<countries>
<code>+387</code>
<name>Bosnia and Herzegovina</name>
</countries>
<countries>
<code>+267</code>
<name>Botswana</name>
</countries>
<countries>
<code>+55</code>
<name>Brazil</name>
</countries>
<countries>
<code>+246</code>
<name>British Indian Ocean Territory</name>
</countries>
<countries>
<code>+1 284</code>
<name>British Virgin Islands</name>
</countries>
<countries>
<code>+673</code>
<name>Brunei</name>
</countries>
<countries>
<code>+359</code>
<name>Bulgaria</name>
</countries>
<countries>
<code>+226</code>
<name>Burkina Faso</name>
</countries>
<countries>
<code>+257</code>
<name>Burundi</name>
</countries>
<countries>
<code>+855</code>
<name>Cambodia</name>
</countries>
<countries>
<code>+237</code>
<name>Cameroon</name>
</countries>
<countries>
<code>+1</code>
<name>Canada</name>
</countries>
<countries>
<code>+238</code>
<name>Cape Verde</name>
</countries>
<countries>
<code>+ 345</code>
<name>Cayman Islands</name>
</countries>
<countries>
<code>+236</code>
<name>Central African Republic</name>
</countries>
<countries>
<code>+235</code>
<name>Chad</name>
</countries>
<countries>
<code>+56</code>
<name>Chile</name>
</countries>
<countries>
<code>+86</code>
<name>China</name>
</countries>
<countries>
<code>+61</code>
<name>Christmas Island</name>
</countries>
<countries>
<code>+61</code>
<name>Cocos-Keeling Islands</name>
</countries>
<countries>
<code>+57</code>
<name>Colombia</name>
</countries>
<countries>
<code>+269</code>
<name>Comoros</name>
</countries>
<countries>
<code>+242</code>
<name>Congo</name>
</countries>
<countries>
<code>+243</code>
<name>Congo, Dem. Rep. of (Zaire)</name>
</countries>
<countries>
<code>+682</code>
<name>Cook Islands</name>
</countries>
<countries>
<code>+506</code>
<name>Costa Rica</name>
</countries>
<countries>
<code>+385</code>
<name>Croatia</name>
</countries>
<countries>
<code>+53</code>
<name>Cuba</name>
</countries>
<countries>
<code>+599</code>
<name>Curacao</name>
</countries>
<countries>
<code>+537</code>
<name>Cyprus</name>
</countries>
<countries>
<code>+420</code>
<name>Czech Republic</name>
</countries>
<countries>
<code>+45</code>
<name>Denmark</name>
</countries>
<countries>
<code>+246</code>
<name>Diego Garcia</name>
</countries>
<countries>
<code>+253</code>
<name>Djibouti</name>
</countries>
<countries>
<code>+1 767</code>
<name>Dominica</name>
</countries>
<countries>
<code>+1 809</code>
<name>Dominican Republic</name>
</countries>
<countries>
<code>+670</code>
<name>East Timor</name>
</countries>
<countries>
<code>+56</code>
<name>Easter Island</name>
</countries>
<countries>
<code>+593</code>
<name>Ecuador</name>
</countries>
<countries>
<code>+20</code>
<name>Egypt</name>
</countries>
<countries>
<code>+503</code>
<name>El Salvador</name>
</countries>
<countries>
<code>+240</code>
<name>Equatorial Guinea</name>
</countries>
<countries>
<code>+291</code>
<name>Eritrea</name>
</countries>
<countries>
<code>+372</code>
<name>Estonia</name>
</countries>
<countries>
<code>+251</code>
<name>Ethiopia</name>
</countries>
<countries>
<code>+500</code>
<name>Falkland Islands</name>
</countries>
<countries>
<code>+298</code>
<name>Faroe Islands</name>
</countries>
<countries>
<code>+679</code>
<name>Fiji</name>
</countries>
<countries>
<code>+358</code>
<name>Finland</name>
</countries>
<countries>
<code>+33</code>
<name>France</name>
</countries>
<countries>
<code>+596</code>
<name>French Antilles</name>
</countries>
<countries>
<code>+594</code>
<name>French Guiana</name>
</countries>
<countries>
<code>+689</code>
<name>French Polynesia</name>
</countries>
<countries>
<code>+241</code>
<name>Gabon</name>
</countries>
<countries>
<code>+220</code>
<name>Gambia</name>
</countries>
<countries>
<code>+995</code>
<name>Georgia</name>
</countries>
<countries>
<code>+49</code>
<name>Germany</name>
</countries>
<countries>
<code>+233</code>
<name>Ghana</name>
</countries>
<countries>
<code>+350</code>
<name>Gibraltar</name>
</countries>
<countries>
<code>+30</code>
<name>Greece</name>
</countries>
<countries>
<code>+299</code>
<name>Greenland</name>
</countries>
<countries>
<code>+1 473</code>
<name>Grenada</name>
</countries>
<countries>
<code>+590</code>
<name>Guadeloupe</name>
</countries>
<countries>
<code>+1 671</code>
<name>Guam</name>
</countries>
<countries>
<code>+502</code>
<name>Guatemala</name>
</countries>
<countries>
<code>+224</code>
<name>Guinea</name>
</countries>
<countries>
<code>+245</code>
<name>Guinea-Bissau</name>
</countries>
<countries>
<code>+595</code>
<name>Guyana</name>
</countries>
<countries>
<code>+509</code>
<name>Haiti</name>
</countries>
<countries>
<code>+504</code>
<name>Honduras</name>
</countries>
<countries>
<code>+852</code>
<name>Hong Kong SAR China</name>
</countries>
<countries>
<code>+36</code>
<name>Hungary</name>
</countries>
<countries>
<code>+354</code>
<name>Iceland</name>
</countries>
<countries>
<code>+91</code>
<name>India</name>
</countries>
<countries>
<code>+62</code>
<name>Indonesia</name>
</countries>
<countries>
<code>+98</code>
<name>Iran</name>
</countries>
<countries>
<code>+964</code>
<name>Iraq</name>
</countries>
<countries>
<code>+353</code>
<name>Ireland</name>
</countries>
<countries>
<code>+972</code>
<name>Israel</name>
</countries>
<countries>
<code>+39</code>
<name>Italy</name>
</countries>
<countries>
<code>+225</code>
<name>Ivory Coast</name>
</countries>
<countries>
<code>+1 876</code>
<name>Jamaica</name>
</countries>
<countries>
<code>+81</code>
<name>Japan</name>
</countries>
<countries>
<code>+962</code>
<name>Jordan</name>
</countries>
<countries>
<code>+7 7</code>
<name>Kazakhstan</name>
</countries>
<countries>
<code>+254</code>
<name>Kenya</name>
</countries>
<countries>
<code>+686</code>
<name>Kiribati</name>
</countries>
<countries>
<code>+965</code>
<name>Kuwait</name>
</countries>
<countries>
<code>+996</code>
<name>Kyrgyzstan</name>
</countries>
<countries>
<code>+856</code>
<name>Laos</name>
</countries>
<countries>
<code>+371</code>
<name>Latvia</name>
</countries>
<countries>
<code>+961</code>
<name>Lebanon</name>
</countries>
<countries>
<code>+266</code>
<name>Lesotho</name>
</countries>
<countries>
<code>+231</code>
<name>Liberia</name>
</countries>
<countries>
<code>+218</code>
<name>Libya</name>
</countries>
<countries>
<code>+423</code>
<name>Liechtenstein</name>
</countries>
<countries>
<code>+370</code>
<name>Lithuania</name>
</countries>
<countries>
<code>+352</code>
<name>Luxembourg</name>
</countries>
<countries>
<code>+853</code>
<name>Macau SAR China</name>
</countries>
<countries>
<code>+389</code>
<name>Macedonia</name>
</countries>
<countries>
<code>+261</code>
<name>Madagascar</name>
</countries>
<countries>
<code>+265</code>
<name>Malawi</name>
</countries>
<countries>
<code>+60</code>
<name>Malaysia</name>
</countries>
<countries>
<code>+960</code>
<name>Maldives</name>
</countries>
<countries>
<code>+223</code>
<name>Mali</name>
</countries>
<countries>
<code>+356</code>
<name>Malta</name>
</countries>
<countries>
<code>+692</code>
<name>Marshall Islands</name>
</countries>
<countries>
<code>+596</code>
<name>Martinique</name>
</countries>
<countries>
<code>+222</code>
<name>Mauritania</name>
</countries>
<countries>
<code>+230</code>
<name>Mauritius</name>
</countries>
<countries>
<code>+262</code>
<name>Mayotte</name>
</countries>
<countries>
<code>+52</code>
<name>Mexico</name>
</countries>
<countries>
<code>+691</code>
<name>Micronesia</name>
</countries>
<countries>
<code>+1 808</code>
<name>Midway Island</name>
</countries>
<countries>
<code>+373</code>
<name>Moldova</name>
</countries>
<countries>
<code>+377</code>
<name>Monaco</name>
</countries>
<countries>
<code>+976</code>
<name>Mongolia</name>
</countries>
<countries>
<code>+382</code>
<name>Montenegro</name>
</countries>
<countries>
<code>+1664</code>
<name>Montserrat</name>
</countries>
<countries>
<code>+212</code>
<name>Morocco</name>
</countries>
<countries>
<code>+95</code>
<name>Myanmar</name>
</countries>
<countries>
<code>+264</code>
<name>Namibia</name>
</countries>
<countries>
<code>+674</code>
<name>Nauru</name>
</countries>
<countries>
<code>+977</code>
<name>Nepal</name>
</countries>
<countries>
<code>+31</code>
<name>Netherlands</name>
</countries>
<countries>
<code>+599</code>
<name>Netherlands Antilles</name>
</countries>
<countries>
<code>+1 869</code>
<name>Nevis</name>
</countries>
<countries>
<code>+687</code>
<name>New Caledonia</name>
</countries>
<countries>
<code>+64</code>
<name>New Zealand</name>
</countries>
<countries>
<code>+505</code>
<name>Nicaragua</name>
</countries>
<countries>
<code>+227</code>
<name>Niger</name>
</countries>
<countries>
<code>+234</code>
<name>Nigeria</name>
</countries>
<countries>
<code>+683</code>
<name>Niue</name>
</countries>
<countries>
<code>+672</code>
<name>Norfolk Island</name>
</countries>
<countries>
<code>+850</code>
<name>North Korea</name>
</countries>
<countries>
<code>+1 670</code>
<name>Northern Mariana Islands</name>
</countries>
<countries>
<code>+47</code>
<name>Norway</name>
</countries>
<countries>
<code>+968</code>
<name>Oman</name>
</countries>
<countries>
<code>+92</code>
<name>Pakistan</name>
</countries>
<countries>
<code>+680</code>
<name>Palau</name>
</countries>
<countries>
<code>+970</code>
<name>Palestinian Territory</name>
</countries>
<countries>
<code>+507</code>
<name>Panama</name>
</countries>
<countries>
<code>+675</code>
<name>Papua New Guinea</name>
</countries>
<countries>
<code>+595</code>
<name>Paraguay</name>
</countries>
<countries>
<code>+51</code>
<name>Peru</name>
</countries>
<countries>
<code>+63</code>
<name>Philippines</name>
</countries>
<countries>
<code>+48</code>
<name>Poland</name>
</countries>
<countries>
<code>+351</code>
<name>Portugal</name>
</countries>
<countries>
<code>+1 787</code>
<name>Puerto Rico</name>
</countries>
<countries>
<code>+974</code>
<name>Qatar</name>
</countries>
<countries>
<code>+262</code>
<name>Reunion</name>
</countries>
<countries>
<code>+40</code>
<name>Romania</name>
</countries>
<countries>
<code>+7</code>
<name>Russia</name>
</countries>
<countries>
<code>+250</code>
<name>Rwanda</name>
</countries>
<countries>
<code>+685</code>
<name>Samoa</name>
</countries>
<countries>
<code>+378</code>
<name>San Marino</name>
</countries>
<countries>
<code>+966</code>
<name>Saudi Arabia</name>
</countries>
<countries>
<code>+221</code>
<name>Senegal</name>
</countries>
<countries>
<code>+381</code>
<name>Serbia</name>
</countries>
<countries>
<code>+248</code>
<name>Seychelles</name>
</countries>
<countries>
<code>+232</code>
<name>Sierra Leone</name>
</countries>
<countries>
<code>+65</code>
<name>Singapore</name>
</countries>
<countries>
<code>+421</code>
<name>Slovakia</name>
</countries>
<countries>
<code>+386</code>
<name>Slovenia</name>
</countries>
<countries>
<code>+677</code>
<name>Solomon Islands</name>
</countries>
<countries>
<code>+27</code>
<name>South Africa</name>
</countries>
<countries>
<code>+500</code>
<name>South Georgia and the South Sandwich Islands</name>
</countries>
<countries>
<code>+82</code>
<name>South Korea</name>
</countries>
<countries>
<code>+34</code>
<name>Spain</name>
</countries>
<countries>
<code>+94</code>
<name>Sri Lanka</name>
</countries>
<countries>
<code>+249</code>
<name>Sudan</name>
</countries>
<countries>
<code>+597</code>
<name>Suriname</name>
</countries>
<countries>
<code>+268</code>
<name>Swaziland</name>
</countries>
<countries>
<code>+46</code>
<name>Sweden</name>
</countries>
<countries>
<code>+41</code>
<name>Switzerland</name>
</countries>
<countries>
<code>+963</code>
<name>Syria</name>
</countries>
<countries>
<code>+886</code>
<name>Taiwan</name>
</countries>
<countries>
<code>+992</code>
<name>Tajikistan</name>
</countries>
<countries>
<code>+255</code>
<name>Tanzania</name>
</countries>
<countries>
<code>+66</code>
<name>Thailand</name>
</countries>
<countries>
<code>+670</code>
<name>Timor Leste</name>
</countries>
<countries>
<code>+228</code>
<name>Togo</name>
</countries>
<countries>
<code>+690</code>
<name>Tokelau</name>
</countries>
<countries>
<code>+676</code>
<name>Tonga</name>
</countries>
<countries>
<code>+1 868</code>
<name>Trinidad and Tobago</name>
</countries>
<countries>
<code>+216</code>
<name>Tunisia</name>
</countries>
<countries>
<code>+90</code>
<name>Turkey</name>
</countries>
<countries>
<code>+993</code>
<name>Turkmenistan</name>
</countries>
<countries>
<code>+1 649</code>
<name>Turks and Caicos Islands</name>
</countries>
<countries>
<code>+688</code>
<name>Tuvalu</name>
</countries>
<countries>
<code>+1 340</code>
<name>U.S. Virgin Islands</name>
</countries>
<countries>
<code>+256</code>
<name>Uganda</name>
</countries>
<countries>
<code>+380</code>
<name>Ukraine</name>
</countries>
<countries>
<code>+971</code>
<name>United Arab Emirates</name>
</countries>
<countries>
<code>+44</code>
<name>United Kingdom</name>
</countries>
<countries>
<code>+1</code>
<name>United States</name>
</countries>
<countries>
<code>+598</code>
<name>Uruguay</name>
</countries>
<countries>
<code>+998</code>
<name>Uzbekistan</name>
</countries>
<countries>
<code>+678</code>
<name>Vanuatu</name>
</countries>
<countries>
<code>+58</code>
<name>Venezuela</name>
</countries>
<countries>
<code>+84</code>
<name>Vietnam</name>
</countries>
<countries>
<code>+1 808</code>
<name>Wake Island</name>
</countries>
<countries>
<code>+681</code>
<name>Wallis and Futuna</name>
</countries>
<countries>
<code>+967</code>
<name>Yemen</name>
</countries>
<countries>
<code>+260</code>
<name>Zambia</name>
</countries>
<countries>
<code>+255</code>
<name>Zanzibar</name>
</countries>
<countries>
<code>+263</code>
<name>Zimbabwe</name>
</countries>
This is the most elegant solution.
private void buttonLogin_Click(object sender, EventArgs e)
{
MainForm mainForm = new MainForm();
this.Hide();
mainForm.ShowDialog();
this.Close();
}
;-)
The item from iterrows()
is not a Series, but a tuple of (index, Series), so you can unpack the tuple in the for loop like so:
for (idx, row) in df.iterrows():
print(row.loc['A'])
print(row.A)
print(row.index)
#0.890618586836
#0.890618586836
#Index(['A', 'B', 'C', 'D'], dtype='object')
Unfortunatelly, it is not so easy as Microsoft has removed advanced file association dialog in recent Windows editions. - With newer Windows versions you may only specify the application that is going to be used to open .jar file.
Fixing .jar file opening on Windows requires two steps.
Open the Control Panel, and chose "Default Programs -> Set Associations". Find .jar extension (Executable JAR file) there, and pick Java as default program to open this extension. It will probably be listed as "Java Platform(SE)". A faster alternative perhaps is straightforward right-click on a .jar file, and then change associated program by clicking on the "Change..." button.
Now open the regedit, and open the HKEY_CLASSES_ROOT\jarfile\shell\open\command
key. Luckilly for us, we may specify parameters there for the (Default)
value. On my Windows system it looks like: C:\app\32\jre7\bin\javaw.exe" -jar "%1" %*
but in most cases it is the following string: C:\Program Files\Java\jre7\bin\javaw.exe" -jar "%1" %*
NOTES:
java.exe
there as it will open the shell window.I wrote this method:
private string GetUrlParameter(HttpRequestBase request, string parName)
{
string result = string.Empty;
var urlParameters = HttpUtility.ParseQueryString(request.Url.Query);
if (urlParameters.AllKeys.Contains(parName))
{
result = urlParameters.Get(parName);
}
return result;
}
And I call it like this:
string fooBar = GetUrlParameter(Request, "FooBar");
if (!string.IsNullOrEmpty(fooBar))
{
}
"How to detect when browser receives file download?"
I faced the same problem with that config:
struts 1.2.9
jquery-1.3.2.
jquery-ui-1.7.1.custom
IE 11
java 5
My solution with a cookie:
- Client side:
When submitting your form, call your javascript function to hide your page and load your waiting spinner
function loadWaitingSpinner(){
... hide your page and show your spinner ...
}
Then, call a function that will check every 500ms whether a cookie is coming from server.
function checkCookie(){
var verif = setInterval(isWaitingCookie,500,verif);
}
If the cookie is found, stop checking every 500ms, expire the cookie and call your function to come back to your page and remove the waiting spinner (removeWaitingSpinner()). It is important to expire the cookie if you want to be able to download another file again!
function isWaitingCookie(verif){
var loadState = getCookie("waitingCookie");
if (loadState == "done"){
clearInterval(verif);
document.cookie = "attenteCookie=done; expires=Tue, 31 Dec 1985 21:00:00 UTC;";
removeWaitingSpinner();
}
}
function getCookie(cookieName){
var name = cookieName + "=";
var cookies = document.cookie
var cs = cookies.split(';');
for (var i = 0; i < cs.length; i++){
var c = cs[i];
while(c.charAt(0) == ' ') {
c = c.substring(1);
}
if (c.indexOf(name) == 0){
return c.substring(name.length, c.length);
}
}
return "";
}
function removeWaitingSpinner(){
... come back to your page and remove your spinner ...
}
- Server side:
At the end of your server process, add a cookie to the response. That cookie will be sent to the client when your file will be ready for download.
Cookie waitCookie = new Cookie("waitingCookie", "done");
response.addCookie(waitCookie);
I hope to help someone!
'ZERO' for unlimited time.
C:\Apache24\htdocs\phpmyadmin\libraries\Config.class.php
/**
* maximum execution time in seconds (0 for no limit)
*
* @global integer $cfg['ExecTimeLimit']
*/
$cfg['ExecTimeLimit'] = 0;
You could also import the large file right from MySQL as query or a PHP query.
500,000 rows just took me 18 seconds to import on local server, using this method.
(create table first) - then:
LOAD DATA LOCAL INFILE 'Path_To_Your_File.csv'
INTO TABLE Your_Table_Name
FIELDS TERMINATED BY ','
LINES TERMINATED BY '\n'
If you're trying to do this from the command line, you may be encountering an issue where a machine-wide environment variable 'Platform' is being set for you and working against you. I can reproduce this if I use the VS2012 Command window instead of a regular windows Command window.
At the command prompt type:
set platform
In a VS2012 Command window, I have a value of 'X64' preset. That seems to interfere with whatever is in my solution file.
In a regular Command window, the 'set' command results in a "variable not defined" message...which is good.
If the result of your 'set' command above returns no environment variable value, you should be good to go.
I think you might need the $_SERVER['REQUEST_URI'];
if(isset($_SESSION['id_login'])) {
header("Location:" . $_SERVER['REQUEST_URI']);
}
That should take the url they're at and redirect them them after a successful login.
You can use either foreign key on many side of OneToMany
relation (i.e. ManyToOne
relation) or use ManyToMany
(on any side) with unique constraint.
My guess is that the original question concerned not disabling search highlighting but simply clearing the highlighting from the last search. The solution of searching for a gibberish string, which the original poster mentioned, is one I've been using for some time to clear highlighting from a previous search, but it's ugly and cumbersome.
Several suggestions I've found to add nnoremap ...
to ~/.vimrc have the effect here of putting vim into replace mode at startup, which isn't at all what I want. The simplest solution I've found is to add the line
nmap <esc><esc> :noh<return>
to my ~/.vimrc. This hews to the KISS principle and doesn't interfere with the arrow keys, which using a single <esc> does. A double-<esc> is required in command mode (or a triple-<esc> from insert or replace mode) to clear highlighting from a previous search, but from a UI perspective this makes the operation about as simple as possible.
This is what I use, based on this link
Function StripAccentb(RA As Range)
Dim A As String * 1
Dim B As String * 1
Dim i As Integer
Dim S As String
'Const AccChars = "ŠŽšžŸÀÁÂÃÄÅÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖÙÚÛÜÝàáâãäåçèéêëìíîïðñòóôõöùúûüýÿ"
'Const RegChars = "SZszYAAAAAACEEEEIIIIDNOOOOOUUUUYaaaaaaceeeeiiiidnooooouuuuyy"
Const AccChars = "ñéúãíçóêôöá" ' using less characters is faster
Const RegChars = "neuaicoeooa"
S = RA.Cells.Text
For i = 1 To Len(AccChars)
A = Mid(AccChars, i, 1)
B = Mid(RegChars, i, 1)
S = Replace(S, A, B)
'Debug.Print (S)
Next
StripAccentb = S
Exit Function
End Function
Usage:
=StripAccentb(B2) ' cell address
Sub version for all cells in a sheet:
Sub replacesub()
Dim A As String * 1
Dim B As String * 1
Dim i As Integer
Dim S As String
Const AccChars = "ñéúãíçóêôöá" ' using less characters is faster
Const RegChars = "neuaicoeooa"
Range("A1").Resize(Cells.Find(what:="*", SearchOrder:=xlRows, _
SearchDirection:=xlPrevious, LookIn:=xlValues).Row, _
Cells.Find(what:="*", SearchOrder:=xlByColumns, _
SearchDirection:=xlPrevious, LookIn:=xlValues).Column).Select '
For Each cell In Selection
If cell <> "" Then
S = cell.Text
For i = 1 To Len(AccChars)
A = Mid(AccChars, i, 1)
B = Mid(RegChars, i, 1)
S = replace(S, A, B)
Next
cell.Value = S
Debug.Print "celltext "; (cell.Text)
End If
Next cell
End Sub
function alphaOnly(event) {
var key = event.keyCode;
return ((key >= 65 && key <= 90) || key == 8);
};
or
function lettersOnly(evt) {
evt = (evt) ? evt : event;
var charCode = (evt.charCode) ? evt.charCode : ((evt.keyCode) ? evt.keyCode :
((evt.which) ? evt.which : 0));
if (charCode > 31 && (charCode < 65 || charCode > 90) &&
(charCode < 97 || charCode > 122)) {
alert("Enter letters only.");
return false;
}
return true;
}
Try this
$objPHPExcel = new PHPExcel(); $objPHPExcel->getProperties()->setCreator("Maarten Balliauw") ->setLastModifiedBy("Maarten Balliauw") ->setTitle("Office 2007 XLSX Test Document") ->setSubject("Office 2007 XLSX Test Document") ->setDescription("Test document for Office 2007 XLSX, generated using PHP classes.") ->setKeywords("office 2007 openxml php") ->setCategory("Test result file"); $objPHPExcel->setActiveSheetIndex(0); $sheet = $objPHPExcel->getActiveSheet(); $sheet->setCellValue('A1', 'No'); $sheet->setCellValue('B1', 'Job ID'); $sheet->setCellValue('C1', 'Job completed Date'); $sheet->setCellValue('D1', 'Job Archived Date'); $styleArray = array( 'font' => array( 'bold' => true ) ); $sheet->getStyle('A1')->applyFromArray($styleArray); $sheet->getStyle('B1')->applyFromArray($styleArray); $sheet->getStyle('C1')->applyFromArray($styleArray); $sheet->getStyle('D1')->applyFromArray($styleArray); $sheet->getPageSetup()->setRowsToRepeatAtTopByStartAndEnd(1, 1);
This is give me output like below link.(https://www.screencast.com/t/ZkKFHbDq1le)
You can use awk
with a system
call readlink
to get the equivalent of an ls
output with full symlink paths. For example:
ls | awk '{printf("%s ->", $1); system("readlink -f " $1)}'
Will display e.g.
thin_repair ->/home/user/workspace/boot/usr/bin/pdata_tools
thin_restore ->/home/user/workspace/boot/usr/bin/pdata_tools
thin_rmap ->/home/user/workspace/boot/usr/bin/pdata_tools
thin_trim ->/home/user/workspace/boot/usr/bin/pdata_tools
touch ->/home/user/workspace/boot/usr/bin/busybox
true ->/home/user/workspace/boot/usr/bin/busybox
Always state the workbook, worksheet and the cell/range.
For example:
Thisworkbook.Worksheets("fred").cells(1,1)
Workbooks("bob").Worksheets("fred").cells(1,1)
Because end users will always just click buttons and as soon as the focus moves off of the workbook the code wants to work with then things go completely wrong.
And never use the index of a workbook.
Workbooks(1).Worksheets("fred").cells(1,1)
You don't know what other workbooks will be open when the user runs your code.
We don't know what server.properties file is that, we neither know what SimocoPoolSize means (do you?)
Let's guess you are using some custom pool of database connections. Then, I guess the problem is that your pool is configured to open 100 or 120 connections, but you Postgresql server is configured to accept MaxConnections=90
. These seem conflictive settings. Try increasing MaxConnections=120
.
But you should first understand your db layer infrastructure, know what pool are you using, if you really need so many open connections in the pool. And, specially, if you are gracefully returning the opened connections to the pool
The way to install plugins seems to have changed, the previous answers here did not work for me.
The current (checked with 7.8.1) way to install plugins is to install it in a sub folder:
The plugin (in the DLL form) should be placed in the plugins subfolder of the Notepad++ Install Folder, under the subfolder with the same name of plugin binary name without file extension. For example, if the plugin you want to install named myAwesomePlugin.dll, you should install it with the following path: %PROGRAMFILES(x86)%\Notepad++\plugins\myAwesomePlugin\myAwesomePlugin.dll
from https://npp-user-manual.org/docs/plugins/
So PluginManager.dll
goes into PluginManager
sub folder.
Use timedelta to switch between timezones. All you need is the offset in hours between timezones. Don't have to fiddle with boundaries for all 6 elements of a datetime object. timedelta handles leap years, leap centuries, etc., too, with ease. You must first
from datetime import datetime, timedelta
Then if offset
is the timezone delta in hours:
timeout = timein + timedelta(hours = offset)
where timein and timeout are datetime objects. e.g.
timein + timedelta(hours = -8)
converts from GMT to PST.
So, how to determine offset
? Here is a simple function provided you only have a few possibilities for conversion without using datetime objects that are timezone "aware" which some other answers nicely do. A bit manual, but sometimes clarity is best.
def change_timezone(timein, timezone, timezone_out):
'''
changes timezone between predefined timezone offsets to GMT
timein - datetime object
timezone - 'PST', 'PDT', 'GMT' (can add more as needed)
timezone_out - 'PST', 'PDT', 'GMT' (can add more as needed)
'''
# simple table lookup
tz_offset = {'PST': {'GMT': 8, 'PDT': 1, 'PST': 0}, \
'GMT': {'PST': -8, 'PDT': -7, 'GMT': 0}, \
'PDT': {'GMT': 7, 'PST': -1, 'PDT': 0}}
try:
offset = tz_offset[timezone][timezone_out]
except:
msg = 'Input timezone=' + timezone + ' OR output time zone=' + \
timezone_out + ' not recognized'
raise DateTimeError(msg)
return timein + timedelta(hours = offset)
After looking at the numerous answers and playing around with the tightest code I can think of (for now) it seems best that all applications, where time is important and mixed timezones must be accounted for, should make a real effort to make all datetime objects "aware". Then it would seem the simplest answer is:
timeout = timein.astimezone(pytz.timezone("GMT"))
to convert to GMT for example. Of course, to convert to/from any other timezone you wish, local or otherwise, just use the appropriate timezone string that pytz understands (from pytz.all_timezones). Daylight savings time is then also taken into account.
Improved version of Komang answer (add referer and user agent, check if you can write the file), return true if it's ok, false if there is an error :
public function downloadImage($url,$filename){
if(file_exists($filename)){
@unlink($filename);
}
$fp = fopen($filename,'w');
if($fp){
$ch = curl_init ($url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1);
$result = parse_url($url);
curl_setopt($ch, CURLOPT_REFERER, $result['scheme'].'://'.$result['host']);
curl_setopt($ch, CURLOPT_USERAGENT,'Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0');
$raw=curl_exec($ch);
curl_close ($ch);
if($raw){
fwrite($fp, $raw);
}
fclose($fp);
if(!$raw){
@unlink($filename);
return false;
}
return true;
}
return false;
}
You can write to a log file on the lines that you want to output like this:
@echo off
echo Debugging started >C:\logfile.txt
echo More stuff
echo Debugging stuff >>C:\logfile.txt
echo Hope this helps! >>C:\logfile.txt
This way you can choose which commands to output if you don't want to trawl through everything, just get what you need to see. The >
will output it to the file specified (creating the file if it doesn't exist and overwriting it if it does). The >>
will append to the file specified (creating the file if it doesn't exist but appending to the contents if it does).
First, Lateral and Cross Apply is same thing. Therefore you may also read about Cross Apply. Since it was implemented in SQL Server for ages, you will find more information about it then Lateral.
Second, according to my understanding, there is nothing you can not do using subquery instead of using lateral. But:
Consider following query.
Select A.*
, (Select B.Column1 from B where B.Fk1 = A.PK and Limit 1)
, (Select B.Column2 from B where B.Fk1 = A.PK and Limit 1)
FROM A
You can use lateral in this condition.
Select A.*
, x.Column1
, x.Column2
FROM A LEFT JOIN LATERAL (
Select B.Column1,B.Column2,B.Fk1 from B Limit 1
) x ON X.Fk1 = A.PK
In this query you can not use normal join, due to limit clause. Lateral or Cross Apply can be used when there is not simple join condition.
There are more usages for lateral or cross apply but this is most common one I found.
One thing I haven't seen others point out is that a standard thing to do in the "please write me some code" section of the job interview is to say "Could you improve that?" or "Are you completely happy with that" or "is that as optimized as possible?" when you say you are done. It's possible you heard "how would you improve that" as "this might be improved; how?". In this case changing the if(x) return true; else return false;
idiom to just return x
is an improvement - but be aware that there are times they just want to see how you react to the question. I have heard that some interviewers will insist there is a flaw in perfect code just to see how you cope with it.
I'm using the first approach but a bit different that allows to address the problems you mentioned.
Everything that is needed to run tests for DAOs is in source control. It includes schema and scripts to create the DB (docker is very good for this). If the embedded DB can be used - I use it for speed.
The important difference with the other described approaches is that the data that is required for test is not loaded from SQL scripts or XML files. Everything (except some dictionary data that is effectively constant) is created by application using utility functions/classes.
The main purpose is to make data used by test
It basically means that these utilities allow to declaratively specify only things essential for the test in test itself and omit irrelevant things.
To give some idea of what it means in practice, consider the test for some DAO which works with Comment
s to Post
s written by Authors
. In order to test CRUD operations for such DAO some data should be created in the DB. The test would look like:
@Test
public void savedCommentCanBeRead() {
// Builder is needed to declaratively specify the entity with all attributes relevant
// for this specific test
// Missing attributes are generated with reasonable values
// factory's responsibility is to create entity (and all entities required by it
// in our example Author) in the DB
Post post = factory.create(PostBuilder.post());
Comment comment = CommentBuilder.comment().forPost(post).build();
sut.save(comment);
Comment savedComment = sut.get(comment.getId());
// this checks fields that are directly stored
assertThat(saveComment, fieldwiseEqualTo(comment));
// if there are some fields that are generated during save check them separately
assertThat(saveComment.getGeneratedField(), equalTo(expectedValue));
}
This has several advantages over SQL scripts or XML files with test data:
I find it more convenient that tests do commit when they are executed. Firstly, some effects (for example DEFERRED CONSTRAINTS
) cannot be checked if commit never happens. Secondly, when a test fails the data can be examined in the DB as it is not reverted by the rollback.
Of cause this has a downside that test may produce a broken data and this will lead to the failures in other tests. To deal with this I try to isolate the tests. In the example above every test may create new Author
and all other entities are created related to it so collisions are rare. To deal with the remaining invariants that can be potentially broken but cannot be expressed as a DB level constraint I use some programmatic checks for erroneous conditions that may be run after every single test (and they are run in CI but usually switched off locally for performance reasons).
I had the same issue on my windows 10. This is what fixed my problem
bower_components
in your root folder.bowerrc
file in the root{"directory" : "public/bower_components"}
bower install
You should see bower_components folder in your public folder now
This error can occur when you rename files outside of XCode. To solve it you can just remove the files from your project (Right Click - Delete and "Remove Reference").
Then after you can re-import the files in your project and everything will be OK.
I used this solution and it worked with Font Awesome 5: https://stackoverflow.com/a/50973559/3813846
What made the difference in my case was to add font-weight: 900;
to the class. Keep in mind to 'fa' to the value.
Example of my code:
<select class="text-primary fa-select" name="class_logo" required>
<option value="fa address-book"> address-book</option>
<option value="fa adjust"> adjust</option>
<option value="fa air-freshener"> air-freshener</option>
</select>
CSS:
.fa-select {
font-family: 'Lato', 'Font Awesome 5 Free';
font-weight: 900;
}
Edit: If you are mixing Solid Icons with Brand Icons in the select, change the CSS as follows:
.fa-select {
font-family: 'Lato', 'Font Awesome 5 Free', 'Font Awesome 5 Brands';
font-weight: 900;
}
This is very inadvisable. But if you're not a programmer, or really prefer terrible code, you could use a substitute preg_replace
function to keep your /e
flag working temporarily.
/**
* Can be used as a stopgap shim for preg_replace() calls with /e flag.
* Is likely to fail for more complex string munging expressions. And
* very obviously won't help with local-scope variable expressions.
*
* @license: CC-BY-*.*-comment-must-be-retained
* @security: Provides `eval` support for replacement patterns. Which
* poses troubles for user-supplied input when paired with overly
* generic placeholders. This variant is only slightly stricter than
* the C implementation, but still susceptible to varexpression, quote
* breakouts and mundane exploits from unquoted capture placeholders.
* @url: https://stackoverflow.com/q/15454220
*/
function preg_replace_eval($pattern, $replacement, $subject, $limit=-1) {
# strip /e flag
$pattern = preg_replace('/(\W[a-df-z]*)e([a-df-z]*)$/i', '$1$2', $pattern);
# warn about most blatant misuses at least
if (preg_match('/\(\.[+*]/', $pattern)) {
trigger_error("preg_replace_eval(): regex contains (.*) or (.+) placeholders, which easily causes security issues for unconstrained/user input in the replacement expression. Transform your code to use preg_replace_callback() with a sane replacement callback!");
}
# run preg_replace with eval-callback
return preg_replace_callback(
$pattern,
function ($matches) use ($replacement) {
# substitute $1/$2/… with literals from $matches[]
$repl = preg_replace_callback(
'/(?<!\\\\)(?:[$]|\\\\)(\d+)/',
function ($m) use ($matches) {
if (!isset($matches[$m[1]])) { trigger_error("No capture group for '$m[0]' eval placeholder"); }
return addcslashes($matches[$m[1]], '\"\'\`\$\\\0'); # additionally escapes '$' and backticks
},
$replacement
);
# run the replacement expression
return eval("return $repl;");
},
$subject,
$limit
);
}
In essence, you just include that function in your codebase, and edit preg_replace
to preg_replace_eval
wherever the /e
flag was used.
Pros and cons:
preg_replace_callback
.Now this is somewhat redundant. But might help those users who are still overwhelmed
with manually restructuring their code to preg_replace_callback
. While this is effectively more time consuming, a code generator has less trouble to expand the /e
replacement string into an expression. It's a very unremarkable conversion, but likely suffices for the most prevalent examples.
To use this function, edit any broken preg_replace
call into preg_replace_eval_replacement
and run it once. This will print out the according preg_replace_callback
block to be used in its place.
/**
* Use once to generate a crude preg_replace_callback() substitution. Might often
* require additional changes in the `return …;` expression. You'll also have to
* refit the variable names for input/output obviously.
*
* >>> preg_replace_eval_replacement("/\w+/", 'strtopupper("$1")', $ignored);
*/
function preg_replace_eval_replacement($pattern, $replacement, $subjectvar="IGNORED") {
$pattern = preg_replace('/(\W[a-df-z]*)e([a-df-z]*)$/i', '$1$2', $pattern);
$replacement = preg_replace_callback('/[\'\"]?(?<!\\\\)(?:[$]|\\\\)(\d+)[\'\"]?/', function ($m) { return "\$m[{$m[1]}]"; }, $replacement);
$ve = "var_export";
$bt = debug_backtrace(0, 1)[0];
print "<pre><code>
#----------------------------------------------------
# replace preg_*() call in '$bt[file]' line $bt[line] with:
#----------------------------------------------------
\$OUTPUT_VAR = preg_replace_callback(
{$ve($pattern, TRUE)},
function (\$m) {
return {$replacement};
},
\$YOUR_INPUT_VARIABLE_GOES_HERE
)
#----------------------------------------------------
</code></pre>\n";
}
Take in mind that mere copy&pasting is not programming. You'll have to adapt the generated code back to your actual input/output variable names, or usage context.
$OUTPUT =
assignment would have to go if the previous preg_replace
call was used in an if
.And the replacement expression may demand more readability improvements or rework.
stripslashes()
often becomes redundant in literal expressions.use
or global
reference for/within the callback."-$1-$2"
capture references will end up syntactically broken by the plain transformation into "-$m[1]-$m[2]
.The code output is merely a starting point. And yes, this would have been more useful as an online tool. This code rewriting approach (edit, run, edit, edit) is somewhat impractical. Yet could be more approachable to those who are accustomed to task-centric coding (more steps, more uncoveries). So this alternative might curb a few more duplicate questions.
Here's my take on this. It handles the edge cases and takes an optional parameter to remove empty entries from the results.
bool endsWith(const std::string& s, const std::string& suffix)
{
return s.size() >= suffix.size() &&
s.substr(s.size() - suffix.size()) == suffix;
}
std::vector<std::string> split(const std::string& s, const std::string& delimiter, const bool& removeEmptyEntries = false)
{
std::vector<std::string> tokens;
for (size_t start = 0, end; start < s.length(); start = end + delimiter.length())
{
size_t position = s.find(delimiter, start);
end = position != string::npos ? position : s.length();
std::string token = s.substr(start, end - start);
if (!removeEmptyEntries || !token.empty())
{
tokens.push_back(token);
}
}
if (!removeEmptyEntries &&
(s.empty() || endsWith(s, delimiter)))
{
tokens.push_back("");
}
return tokens;
}
Examples
split("a-b-c", "-"); // [3]("a","b","c")
split("a--c", "-"); // [3]("a","","c")
split("-b-", "-"); // [3]("","b","")
split("--c--", "-"); // [5]("","","c","","")
split("--c--", "-", true); // [1]("c")
split("a", "-"); // [1]("a")
split("", "-"); // [1]("")
split("", "-", true); // [0]()
Check following rules :
First checks whether names are given right for table names
Second right data type give to foreign key ?
foreach
supports iteration over three different kinds of values:
Traversable
objectsIn the following, I will try to explain precisely how iteration works in different cases. By far the simplest case is Traversable
objects, as for these foreach
is essentially only syntax sugar for code along these lines:
foreach ($it as $k => $v) { /* ... */ }
/* translates to: */
if ($it instanceof IteratorAggregate) {
$it = $it->getIterator();
}
for ($it->rewind(); $it->valid(); $it->next()) {
$v = $it->current();
$k = $it->key();
/* ... */
}
For internal classes, actual method calls are avoided by using an internal API that essentially just mirrors the Iterator
interface on the C level.
Iteration of arrays and plain objects is significantly more complicated. First of all, it should be noted that in PHP "arrays" are really ordered dictionaries and they will be traversed according to this order (which matches the insertion order as long as you didn't use something like sort
). This is opposed to iterating by the natural order of the keys (how lists in other languages often work) or having no defined order at all (how dictionaries in other languages often work).
The same also applies to objects, as the object properties can be seen as another (ordered) dictionary mapping property names to their values, plus some visibility handling. In the majority of cases, the object properties are not actually stored in this rather inefficient way. However, if you start iterating over an object, the packed representation that is normally used will be converted to a real dictionary. At that point, iteration of plain objects becomes very similar to iteration of arrays (which is why I'm not discussing plain-object iteration much in here).
So far, so good. Iterating over a dictionary can't be too hard, right? The problems begin when you realize that an array/object can change during iteration. There are multiple ways this can happen:
foreach ($arr as &$v)
then $arr
is turned into a reference and you can change it during iteration.$ref =& $arr; foreach ($ref as $v)
The problem with allowing modifications during iteration is the case where the element you are currently on is removed. Say you use a pointer to keep track of which array element you are currently at. If this element is now freed, you are left with a dangling pointer (usually resulting in a segfault).
There are different ways of solving this issue. PHP 5 and PHP 7 differ significantly in this regard and I'll describe both behaviors in the following. The summary is that PHP 5's approach was rather dumb and lead to all kinds of weird edge-case issues, while PHP 7's more involved approach results in more predictable and consistent behavior.
As a last preliminary, it should be noted that PHP uses reference counting and copy-on-write to manage memory. This means that if you "copy" a value, you actually just reuse the old value and increment its reference count (refcount). Only once you perform some kind of modification a real copy (called a "duplication") will be done. See You're being lied to for a more extensive introduction on this topic.
Arrays in PHP 5 have one dedicated "internal array pointer" (IAP), which properly supports modifications: Whenever an element is removed, there will be a check whether the IAP points to this element. If it does, it is advanced to the next element instead.
While foreach
does make use of the IAP, there is an additional complication: There is only one IAP, but one array can be part of multiple foreach
loops:
// Using by-ref iteration here to make sure that it's really
// the same array in both loops and not a copy
foreach ($arr as &$v1) {
foreach ($arr as &$v) {
// ...
}
}
To support two simultaneous loops with only one internal array pointer, foreach
performs the following shenanigans: Before the loop body is executed, foreach
will back up a pointer to the current element and its hash into a per-foreach HashPointer
. After the loop body runs, the IAP will be set back to this element if it still exists. If however the element has been removed, we'll just use wherever the IAP is currently at. This scheme mostly-kinda-sort of works, but there's a lot of weird behavior you can get out of it, some of which I'll demonstrate below.
The IAP is a visible feature of an array (exposed through the current
family of functions), as such changes to the IAP count as modifications under copy-on-write semantics. This, unfortunately, means that foreach
is in many cases forced to duplicate the array it is iterating over. The precise conditions are:
refcount
is 1, then the array is not shared and we're free to modify it directly.If the array is not duplicated (is_ref=0, refcount=1), then only its refcount
will be incremented (*). Additionally, if foreach
by reference is used, then the (potentially duplicated) array will be turned into a reference.
Consider this code as an example where duplication occurs:
function iterate($arr) {
foreach ($arr as $v) {}
}
$outerArr = [0, 1, 2, 3, 4];
iterate($outerArr);
Here, $arr
will be duplicated to prevent IAP changes on $arr
from leaking to $outerArr
. In terms of the conditions above, the array is not a reference (is_ref=0) and is used in two places (refcount=2). This requirement is unfortunate and an artifact of the suboptimal implementation (there is no concern of modification during iteration here, so we don't really need to use the IAP in the first place).
(*) Incrementing the refcount
here sounds innocuous, but violates copy-on-write (COW) semantics: This means that we are going to modify the IAP of a refcount=2 array, while COW dictates that modifications can only be performed on refcount=1 values. This violation results in user-visible behavior change (while a COW is normally transparent) because the IAP change on the iterated array will be observable -- but only until the first non-IAP modification on the array. Instead, the three "valid" options would have been a) to always duplicate, b) do not increment the refcount
and thus allowing the iterated array to be arbitrarily modified in the loop or c) don't use the IAP at all (the PHP 7 solution).
There is one last implementation detail that you have to be aware of to properly understand the code samples below. The "normal" way of looping through some data structure would look something like this in pseudocode:
reset(arr);
while (get_current_data(arr, &data) == SUCCESS) {
code();
move_forward(arr);
}
However foreach
, being a rather special snowflake, chooses to do things slightly differently:
reset(arr);
while (get_current_data(arr, &data) == SUCCESS) {
move_forward(arr);
code();
}
Namely, the array pointer is already moved forward before the loop body runs. This means that while the loop body is working on element $i
, the IAP is already at element $i+1
. This is the reason why code samples showing modification during iteration will always unset
the next element, rather than the current one.
The three aspects described above should provide you with a mostly complete impression of the idiosyncrasies of the foreach
implementation and we can move on to discuss some examples.
The behavior of your test cases is simple to explain at this point:
In test cases 1 and 2 $array
starts off with refcount=1, so it will not be duplicated by foreach
: Only the refcount
is incremented. When the loop body subsequently modifies the array (which has refcount=2 at that point), the duplication will occur at that point. Foreach will continue working on an unmodified copy of $array
.
In test case 3, once again the array is not duplicated, thus foreach
will be modifying the IAP of the $array
variable. At the end of the iteration, the IAP is NULL (meaning iteration has done), which each
indicates by returning false
.
In test cases 4 and 5 both each
and reset
are by-reference functions. The $array
has a refcount=2
when it is passed to them, so it has to be duplicated. As such foreach
will be working on a separate array again.
current
in foreachA good way to show the various duplication behaviors is to observe the behavior of the current()
function inside a foreach
loop. Consider this example:
foreach ($array as $val) {
var_dump(current($array));
}
/* Output: 2 2 2 2 2 */
Here you should know that current()
is a by-ref function (actually: prefer-ref), even though it does not modify the array. It has to be in order to play nice with all the other functions like next
which are all by-ref. By-reference passing implies that the array has to be separated and thus $array
and the foreach-array
will be different. The reason you get 2
instead of 1
is also mentioned above: foreach
advances the array pointer before running the user code, not after. So even though the code is at the first element, foreach
already advanced the pointer to the second.
Now lets try a small modification:
$ref = &$array;
foreach ($array as $val) {
var_dump(current($array));
}
/* Output: 2 3 4 5 false */
Here we have the is_ref=1 case, so the array is not copied (just like above). But now that it is a reference, the array no longer has to be duplicated when passing to the by-ref current()
function. Thus current()
and foreach
work on the same array. You still see the off-by-one behavior though, due to the way foreach
advances the pointer.
You get the same behavior when doing by-ref iteration:
foreach ($array as &$val) {
var_dump(current($array));
}
/* Output: 2 3 4 5 false */
Here the important part is that foreach will make $array
an is_ref=1 when it is iterated by reference, so basically you have the same situation as above.
Another small variation, this time we'll assign the array to another variable:
$foo = $array;
foreach ($array as $val) {
var_dump(current($array));
}
/* Output: 1 1 1 1 1 */
Here the refcount of the $array
is 2 when the loop is started, so for once we actually have to do the duplication upfront. Thus $array
and the array used by foreach will be completely separate from the outset. That's why you get the position of the IAP wherever it was before the loop (in this case it was at the first position).
Trying to account for modifications during iteration is where all our foreach troubles originated, so it serves to consider some examples for this case.
Consider these nested loops over the same array (where by-ref iteration is used to make sure it really is the same one):
foreach ($array as &$v1) {
foreach ($array as &$v2) {
if ($v1 == 1 && $v2 == 1) {
unset($array[1]);
}
echo "($v1, $v2)\n";
}
}
// Output: (1, 1) (1, 3) (1, 4) (1, 5)
The expected part here is that (1, 2)
is missing from the output because element 1
was removed. What's probably unexpected is that the outer loop stops after the first element. Why is that?
The reason behind this is the nested-loop hack described above: Before the loop body runs, the current IAP position and hash is backed up into a HashPointer
. After the loop body it will be restored, but only if the element still exists, otherwise the current IAP position (whatever it may be) is used instead. In the example above this is exactly the case: The current element of the outer loop has been removed, so it will use the IAP, which has already been marked as finished by the inner loop!
Another consequence of the HashPointer
backup+restore mechanism is that changes to the IAP through reset()
etc. usually do not impact foreach
. For example, the following code executes as if the reset()
were not present at all:
$array = [1, 2, 3, 4, 5];
foreach ($array as &$value) {
var_dump($value);
reset($array);
}
// output: 1, 2, 3, 4, 5
The reason is that, while reset()
temporarily modifies the IAP, it will be restored to the current foreach element after the loop body. To force reset()
to make an effect on the loop, you have to additionally remove the current element, so that the backup/restore mechanism fails:
$array = [1, 2, 3, 4, 5];
$ref =& $array;
foreach ($array as $value) {
var_dump($value);
unset($array[1]);
reset($array);
}
// output: 1, 1, 3, 4, 5
But, those examples are still sane. The real fun starts if you remember that the HashPointer
restore uses a pointer to the element and its hash to determine whether it still exists. But: Hashes have collisions, and pointers can be reused! This means that, with a careful choice of array keys, we can make foreach
believe that an element that has been removed still exists, so it will jump directly to it. An example:
$array = ['EzEz' => 1, 'EzFY' => 2, 'FYEz' => 3];
$ref =& $array;
foreach ($array as $value) {
unset($array['EzFY']);
$array['FYFY'] = 4;
reset($array);
var_dump($value);
}
// output: 1, 4
Here we should normally expect the output 1, 1, 3, 4
according to the previous rules. How what happens is that 'FYFY'
has the same hash as the removed element 'EzFY'
, and the allocator happens to reuse the same memory location to store the element. So foreach ends up directly jumping to the newly inserted element, thus short-cutting the loop.
One last odd case that I'd like to mention, it is that PHP allows you to substitute the iterated entity during the loop. So you can start iterating on one array and then replace it with another array halfway through. Or start iterating on an array and then replace it with an object:
$arr = [1, 2, 3, 4, 5];
$obj = (object) [6, 7, 8, 9, 10];
$ref =& $arr;
foreach ($ref as $val) {
echo "$val\n";
if ($val == 3) {
$ref = $obj;
}
}
/* Output: 1 2 3 6 7 8 9 10 */
As you can see in this case PHP will just start iterating the other entity from the start once the substitution has happened.
If you still remember, the main problem with array iteration was how to handle removal of elements mid-iteration. PHP 5 used a single internal array pointer (IAP) for this purpose, which was somewhat suboptimal, as one array pointer had to be stretched to support multiple simultaneous foreach loops and interaction with reset()
etc. on top of that.
PHP 7 uses a different approach, namely, it supports creating an arbitrary amount of external, safe hashtable iterators. These iterators have to be registered in the array, from which point on they have the same semantics as the IAP: If an array element is removed, all hashtable iterators pointing to that element will be advanced to the next element.
This means that foreach
will no longer use the IAP at all. The foreach
loop will be absolutely no effect on the results of current()
etc. and its own behavior will never be influenced by functions like reset()
etc.
Another important change between PHP 5 and PHP 7 relates to array duplication. Now that the IAP is no longer used, by-value array iteration will only do a refcount
increment (instead of duplication the array) in all cases. If the array is modified during the foreach
loop, at that point a duplication will occur (according to copy-on-write) and foreach
will keep working on the old array.
In most cases, this change is transparent and has no other effect than better performance. However, there is one occasion where it results in different behavior, namely the case where the array was a reference beforehand:
$array = [1, 2, 3, 4, 5];
$ref = &$array;
foreach ($array as $val) {
var_dump($val);
$array[2] = 0;
}
/* Old output: 1, 2, 0, 4, 5 */
/* New output: 1, 2, 3, 4, 5 */
Previously by-value iteration of reference-arrays was special cases. In this case, no duplication occurred, so all modifications of the array during iteration would be reflected by the loop. In PHP 7 this special case is gone: A by-value iteration of an array will always keep working on the original elements, disregarding any modifications during the loop.
This, of course, does not apply to by-reference iteration. If you iterate by-reference all modifications will be reflected by the loop. Interestingly, the same is true for by-value iteration of plain objects:
$obj = new stdClass;
$obj->foo = 1;
$obj->bar = 2;
foreach ($obj as $val) {
var_dump($val);
$obj->bar = 42;
}
/* Old and new output: 1, 42 */
This reflects the by-handle semantics of objects (i.e. they behave reference-like even in by-value contexts).
Let's consider a few examples, starting with your test cases:
Test cases 1 and 2 retain the same output: By-value array iteration always keep working on the original elements. (In this case, even refcounting
and duplication behavior is exactly the same between PHP 5 and PHP 7).
Test case 3 changes: Foreach
no longer uses the IAP, so each()
is not affected by the loop. It will have the same output before and after.
Test cases 4 and 5 stay the same: each()
and reset()
will duplicate the array before changing the IAP, while foreach
still uses the original array. (Not that the IAP change would have mattered, even if the array was shared.)
The second set of examples was related to the behavior of current()
under different reference/refcounting
configurations. This no longer makes sense, as current()
is completely unaffected by the loop, so its return value always stays the same.
However, we get some interesting changes when considering modifications during iteration. I hope you will find the new behavior saner. The first example:
$array = [1, 2, 3, 4, 5];
foreach ($array as &$v1) {
foreach ($array as &$v2) {
if ($v1 == 1 && $v2 == 1) {
unset($array[1]);
}
echo "($v1, $v2)\n";
}
}
// Old output: (1, 1) (1, 3) (1, 4) (1, 5)
// New output: (1, 1) (1, 3) (1, 4) (1, 5)
// (3, 1) (3, 3) (3, 4) (3, 5)
// (4, 1) (4, 3) (4, 4) (4, 5)
// (5, 1) (5, 3) (5, 4) (5, 5)
As you can see, the outer loop no longer aborts after the first iteration. The reason is that both loops now have entirely separate hashtable iterators, and there is no longer any cross-contamination of both loops through a shared IAP.
Another weird edge case that is fixed now, is the odd effect you get when you remove and add elements that happen to have the same hash:
$array = ['EzEz' => 1, 'EzFY' => 2, 'FYEz' => 3];
foreach ($array as &$value) {
unset($array['EzFY']);
$array['FYFY'] = 4;
var_dump($value);
}
// Old output: 1, 4
// New output: 1, 3, 4
Previously the HashPointer restore mechanism jumped right to the new element because it "looked" like it's the same as the removed element (due to colliding hash and pointer). As we no longer rely on the element hash for anything, this is no longer an issue.
Extending the Quote idea for Objective-C:
#define NSStringMultiline(...) [[NSString alloc] initWithCString:#__VA_ARGS__ encoding:NSUTF8StringEncoding]
NSString *sql = NSStringMultiline(
SELECT name, age
FROM users
WHERE loggedin = true
);
Testing¹ reveals that Lightsail instances in fact are EC2 instances, from the t2
class of burstable instances.
EC2, of course, has many more instance families and classes other than the t2, almost all of which are more "powerful" (or better equipped for certain tasks) than these, but also much more expensive. But for meaningful comparisons, the 512 MiB Lightsail instance appears to be completely equivalent in specifications to the similarly-priced t2.nano, the 1GiB is a t2.micro, the 2 GiB is a t2.small, etc.
Lightsail is a lightweight, simplified product offering -- hard disks are fixed size EBS SSD volumes, instances are still billable when stopped, security group rules are much less flexible, and only a very limited subset of EC2 features and options are accessible.
It also has a dramatically simplified console, and even though the machines run in EC2, you can't see them in the EC2 section of the AWS console. The instances run in a special VPC, but this aspect is also provisioned automatically, and invisible in the console. Lightsail supports optionally peering this hidden VPC with your default VPC in the same AWS region, allowing Lightsail instances to access services like EC2 and RDS in the default VPC within the same AWS account.²
Bandwidth is unlimited, but of course free bandwidth is not -- however, Lightsail instances do include a significant monthly bandwidth allowance before any bandwidth-related charges apply.³ Lightsail also has a simplified interface to Route 53 with limited functionality.
But if those sound like drawbacks, they aren't. The point of Lightsail seems to be simplicity. The flexibility of EC2 (and much of AWS) leads inevitably to complexity. The target market for Lightsail appears to be those who "just want a simple VPS" without having to navigate the myriad options available in AWS services like EC2, EBS, VPC, and Route 53. There is virtually no learning curve, here. You don't even technically need to know how to use SSH with a private key -- the Lightsail console even has a built-in SSH client -- but there is no requirement that you use it. You can access these instances normally, with a standard SSH client.
¹Lightsail instances, just like "regular" EC2 (VPC and Classic) instances, have access to the instance metadata service, which allows an instance to discover things about itself, such as its instance type and availability zone. Lightsail instances are identified in the instance metadata as t2
machines.
²The Lightsail docs are not explicit about the fact that peering only works with your Default VPC, but this appears to be the case. If your AWS account was created in 2013 or before, then you may not actually have a VPC with the "Default VPC" designation. This can be resolved by submitting a support request, as I explained in Can't establish VPC peering connection from Amazon Lightsail (at Server Fault).
³The bandwidth allowance applies to both inbound and outbound traffic; after this total amount of traffic is exceeded, inbound traffic continues to be free, but outbound traffic becomes billable. See "What does data transfer cost?" in the Lightsail FAQ.
One solution to this problem is to use the Handler.postDelayed() method. Some Google training materials suggest the same solution.
@Override
public void onClick(View v) {
my_button.setBackgroundResource(R.drawable.icon);
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
my_button.setBackgroundResource(R.drawable.defaultcard);
}
}, 2000);
}
However, some have pointed out that the solution above causes a memory leak because it uses a non-static inner and anonymous class which implicitly holds a reference to its outer class, the activity. This is a problem when the activity context is garbage collected.
A more complex solution that avoids the memory leak subclasses the Handler
and Runnable
with static inner classes inside the activity since static inner classes do not hold an implicit reference to their outer class:
private static class MyHandler extends Handler {}
private final MyHandler mHandler = new MyHandler();
public static class MyRunnable implements Runnable {
private final WeakReference<Activity> mActivity;
public MyRunnable(Activity activity) {
mActivity = new WeakReference<>(activity);
}
@Override
public void run() {
Activity activity = mActivity.get();
if (activity != null) {
Button btn = (Button) activity.findViewById(R.id.button);
btn.setBackgroundResource(R.drawable.defaultcard);
}
}
}
private MyRunnable mRunnable = new MyRunnable(this);
public void onClick(View view) {
my_button.setBackgroundResource(R.drawable.icon);
// Execute the Runnable in 2 seconds
mHandler.postDelayed(mRunnable, 2000);
}
Note that the Runnable
uses a WeakReference to the Activity, which is necessary in a static class that needs access to the UI.
Use ng-submit and just wrap both inputs in separate form tags:
<div ng-controller="mycontroller">
<form ng-submit="myFunc()">
<input type="text" ng-model="name" <!-- Press ENTER and call myFunc --> />
</form>
<br />
<form ng-submit="myFunc()">
<input type="text" ng-model="email" <!-- Press ENTER and call myFunc --> />
</form>
</div>
Wrapping each input field in its own form tag allows ENTER to invoke submit on either form. If you use one form tag for both, you will have to include a submit button.
Primary keys are always indexed by default.
You can define a primary key in SQL Server 2012 by using SQL Server Management Studio or Transact-SQL. Creating a primary key automatically creates a corresponding unique, clustered or nonclustered index.
I encountered a similar problem when I was using the below to obtain connection factory
ConnectionFactory factory = new
ActiveMQConnectionFactory("admin","admin","tcp://:61616");
Its resolved when I changed it to the below
ConnectionFactory factory = new ActiveMQConnectionFactory("tcp://:61616");
The below then showed that my Q size was increasing..
http://:8161/admin/queues.jsp
Since I currently have the same problem here is what I do:
I prefer com.sun.Reflection instead of stackTrace since a stack trace is only producing the name not the class (including the classloader) itself.
The method is deprecated but still around in Java 8 SDK.
// Method descriptor #124 (I)Ljava/lang/Class; (deprecated) // Signature: (I)Ljava/lang/Class<*>; @java.lang.Deprecated public static native java.lang.Class getCallerClass(int arg0);
// Method descriptor #122 ()Ljava/lang/Class; // Signature: ()Ljava/lang/Class<*>; @sun.reflect.CallerSensitive public static native java.lang.Class getCallerClass();
Since I have to be platform independent bla bla including Security Restrictions, I just create a flexible method:
Check if com.sun.Reflection is available (security exceptions disable this mechanism)
If 1 is yes then get the method with int or no int argument.
If 2 is yes call it.
If 3. was never reached, I use the stack trace to return the name. I use a special result object that contains either the class or the string and this object tells exactly what it is and why.
[Summary] I use stacktrace for backup and to bypass eclipse compiler warnings I use reflections. Works very good. Keeps the code clean, works like a charm and also states the problems involved correctly.
I use this for quite a long time and today I searched a related question so
Here's an article that explains how to approach doing this in 2020: https://www.robertcooper.me/table-row-links
The article explains 3 possible solutions:
<div>
elements instead of native HTML table elements in order to have tables rows as <a>
elements.The article goes into depth on how to implement each solution (with links to CodePens) and also considers edge cases, such as how to approach a situation where you want to add links inside you table cells (having nested <a>
elements is not valid HTML, so you need to workaround that).
As @gameliela pointed out, it may also be worth trying to find an approach where you don't make your entire row a link, since it will simplify a lot of things. I do, however, think that it can be a good user experience to have an entire table row clickable as a link since it is convenient for the user to be able to click anywhere on a table to navigate to the corresponding page.
I would recommend following one of my favorite short tutorials here: http://codewithchris.com/common-mistakes-with-adding-custom-fonts-to-your-ios-app/ from which this information comes.
Step 1 - Drag your .ttf or .otf from Finder into your Project
NOTE - Make sure to click the box to 'Add to targets' on your main application target
If you forgot to click to add it to your target then click on the font file in your project hierarchy and on the right side panel click the main app target in the Target Membership section
To make sure your fonts are part of your app target make sure they show up in your Copy Bundle Resources in Build Phases
Step 2 - Add the font file names to your Plist
Go to the Custom iOS Target Properties in your Info Section and add a key to the items in that section called Fonts provided by application
(you should see it come up as an option as you type it and it will set itself up as an array. Click the little arrow to open up the array items and type in the names of the .ttf or .otf files that you added to let your app know that these are the font files you want available
NOTE - If your app crashes right after this step then check your spelling on the items you add here
Step 3 - Find out the names of your fonts so you can call them
Quite often the font name seen by your application is different from what you think it is based on the filename for that font, put this in your code and look over the log your application makes to see what font name to call in your code
Swift
for family: String in UIFont.familyNames(){
print("\(family)")
for names: String in UIFont.fontNamesForFamilyName(family){
print("== \(names)")
}
}
Objective C
for (NSString* family in [UIFont familyNames]){
NSLog(@"%@", family);
for (NSString* name in [UIFont fontNamesForFamilyName: family]){
NSLog(@" %@", name);
}
}
Your log should look something like this:
Step 4 - Use your new custom font using the name from Step 3
Swift
label.font = UIFont(name: "SourceSansPro-Regular", size: 18)
Objective C
label.font = [UIFont fontWithName:@"SourceSansPro-Regular" size:18];
Short version: Yes it is faster, with less code!
String concatenation does a lot of work without knowing if it is needed or not (the traditional "is debugging enabled" test known from log4j), and should be avoided if possible, as the {} allows delaying the toString() call and string construction to after it has been decided if the event needs capturing or not. By having the logger format a single string the code becomes cleaner in my opinion.
You can provide any number of arguments. Note that if you use an old version of sljf4j and you have more than two arguments to {}
, you must use the new Object[]{a,b,c,d}
syntax to pass an array instead. See e.g. http://slf4j.org/apidocs/org/slf4j/Logger.html#debug(java.lang.String, java.lang.Object[]).
Regarding the speed: Ceki posted a benchmark a while back on one of the lists.
You can use CSS only to set two columns or more
A E
B
C
D
<ul class="columns">
<li>A</li>
<li>B</li>
<li>C</li>
<li>D</li>
<li>E</li>
</ul>
ul.columns {
-webkit-columns: 60px 2;
-moz-columns: 60px 2;
columns: 60px 2;
-moz-column-fill: auto;
column-fill: auto;
}
i fell into a case where clearing the entire array failed with dim/redim :
having 2 module-wide arrays, Private inside a userform,
One array is dynamic and uses a class module, the other is fixed and has a special type.
Option Explicit
Private Type Perso_Type
Nom As String
PV As Single 'Long 'max 1
Mana As Single 'Long
Classe1 As String
XP1 As Single
Classe2 As String
XP2 As Single
Classe3 As String
XP3 As Single
Classe4 As String
XP4 As Single
Buff(1 To 10) As IPicture 'Disp
BuffType(1 To 10) As String
Dances(1 To 10) As IPicture 'Disp
DancesType(1 To 10) As String
End Type
Private Data_Perso(1 To 9, 1 To 8) As Perso_Type
Dim ImgArray() As New ClsImage 'ClsImage is a Class module
And i have a sub declared as public to clear those arrays (and associated run-time created controls) from inside and outside the userform like this :
Public Sub EraseControlsCreatedAtRunTime()
Dim i As Long
On Error Resume Next
With Me.Controls 'removing all on run-time created controls of the Userform :
For i = .Count - 1 To 0 Step -1
.Remove i
Next i
End With
Err.Clear: On Error GoTo 0
Erase ImgArray, Data_Perso
'ReDim ImgArray() As ClsImage ' i tried this, no error but wouldn't work correctly
'ReDim Data_Perso(1 To 9, 1 To 8) As Perso_Type 'without the erase not working, with erase this line is not needed.
End Sub
note : this last sub was first called from outside (other form and class module) with Call FormName.SubName
but had to replace it with Application.Run FormName.SubName
, less errors, don't ask why...
Having sequential ID's makes it a LOT easier for a hacker or data miner to compromise your site and data. Keep that in mind when choosing a PK for a website.
You can compile with either Cygwin's g++
or MinGW (via stand-alone or using Cygwin package). However, in order to run it, you need to add the Cygwin1.dll
(and others) PATH to the system Windows PATH, before any cygwin style paths.
Thus add: ;C:\cygwin64\bin
to the end of your Windows system PATH
variable.
Also, to compile for use in CMD or PowerShell, you may need to use:
x86_64-w64-mingw32-g++.exe -static -std=c++11 prog_name.cc -o prog_name.exe
(This invokes the cross-compiler, if installed.)
I haven't checked this lately, but I know in the past with Oracle that the JDBC driver would reserve a chunk of memory during query execution to hold the result set coming back. The size of the memory chunk is dependent on the column definitions and the fetch size. So the length of the varchar2 columns affects how much memory is reserved. This caused serious performance issues for me years ago as we always used varchar2(4000) (the max at the time) and garbage collection was much less efficient than it is today.
This is basically the same answer provided by Evert, but extended to show-off
some cool options of fill_between
from matplotlib import pyplot as pl
import numpy as np
pl.clf()
pl.hold(1)
x = np.linspace(0, 30, 100)
y = np.sin(x) * 0.5
pl.plot(x, y, '-k')
x = np.linspace(0, 30, 30)
y = np.sin(x/6*np.pi)
error = np.random.normal(0.1, 0.02, size=y.shape) +.1
y += np.random.normal(0, 0.1, size=y.shape)
pl.plot(x, y, 'k', color='#CC4F1B')
pl.fill_between(x, y-error, y+error,
alpha=0.5, edgecolor='#CC4F1B', facecolor='#FF9848')
y = np.cos(x/6*np.pi)
error = np.random.rand(len(y)) * 0.5
y += np.random.normal(0, 0.1, size=y.shape)
pl.plot(x, y, 'k', color='#1B2ACC')
pl.fill_between(x, y-error, y+error,
alpha=0.2, edgecolor='#1B2ACC', facecolor='#089FFF',
linewidth=4, linestyle='dashdot', antialiased=True)
y = np.cos(x/6*np.pi) + np.sin(x/3*np.pi)
error = np.random.rand(len(y)) * 0.5
y += np.random.normal(0, 0.1, size=y.shape)
pl.plot(x, y, 'k', color='#3F7F4C')
pl.fill_between(x, y-error, y+error,
alpha=1, edgecolor='#3F7F4C', facecolor='#7EFF99',
linewidth=0)
pl.show()
Try the following line:
while read line1; do read line2; echo "$line1 $line2"; done <old.txt>new_file
Put delimiter in-between
"$line1 $line2";
e.g. if the delimiter is |
, then:
"$line1|$line2";
There is also another way if you define one pointcut for many advices it can be helpful:
@Pointcut("execution(@com.stackoverflow.MyAnnotation * *(..))")
protected void myPointcut() {
}
@AfterThrowing(pointcut = "myPointcut() && args(someId,..)", throwing = "e")
public void afterThrowingException(JoinPoint joinPoint, Exception e, Integer someId) {
System.out.println(someId.toString());
}
@AfterReturning(pointcut = "myPointcut() && args(someId,..)")
public void afterSuccessfulReturn(JoinPoint joinPoint, Integer someId) {
System.out.println(someId.toString());
}
I'd like to suggest an amendment to Zach/RegularMike's answer (but don't have the "reputation" to be able to comment!). I found there solution a very useful basis, but suffered in my application because if there are strings within arrays it would recursively call the function for every character in the string (which caused IE11 & Edge browsers to fail with "out of stack space" errors). My simple optimization was to add the same test used in the "object" clause recursive call to the one in the "array" clause:
if (arrayElem instanceof Object || arrayElem instanceof Array) {
Thus my full code (which is now looking for all instances of a particular key, so slightly different to the original requirement) is:
// Get all instances of specified property deep within supplied object
function getPropsInObject(theObject, targetProp) {
var result = [];
if (theObject instanceof Array) {
for (var i = 0; i < theObject.length; i++) {
var arrayElem = theObject[i];
if (arrayElem instanceof Object || arrayElem instanceof Array) {
result = result.concat(getPropsInObject(arrayElem, targetProp));
}
}
} else {
for (var prop in theObject) {
var objProp = theObject[prop];
if (prop == targetProp) {
return theObject[prop];
}
if (objProp instanceof Object || objProp instanceof Array) {
result = result.concat(getPropsInObject(objProp, targetProp));
}
}
}
return result;
}
If you are using VBA to enter formulas, it is possible to accidentally enter them incompletely:
Sub AlmostAFormula()
With Range("A1")
.Clear
.NumberFormat = "@"
.Value = "=B1+C1"
.NumberFormat = "General"
End With
End Sub
A1 will appear to have a formula, but it is only text until you double-click the cell and touch Enter .
Make sure you have no bugs like this in your code.
EDIT: The other two answers make a good point. I'm assuming that you want to order them into some other structure, or in order to print them out.
"Best" can mean a number of different things. Do you mean "easiest," "fastest," "most efficient," "least code," "most readable?"
The most obvious approach is to loop through twice. On the first pass, order the values:
if(current_value > examined_value)
{
current_value = examined_value
(and then swap them, however you like)
}
Then on the second pass, alphabetize the words, but only if their values match.
if(current_value == examined_value)
{
(alphabetize the two)
}
Strictly speaking, this is a "bubble sort" which is slow because every time you make a swap, you have to start over. One "pass" is finished when you get through the whole list without making any swaps.
There are other sorting algorithms, but the principle would be the same: order by value, then alphabetize.
TCP/IP is a stream-based protocol, not a message-based protocol. There's no guarantee that every send()
call by one peer results in a single recv()
call by the other peer receiving the exact data sent—it might receive the data piece-meal, split across multiple recv()
calls, due to packet fragmentation.
You need to define your own message-based protocol on top of TCP in order to differentiate message boundaries. Then, to read a message, you continue to call recv()
until you've read an entire message or an error occurs.
One simple way of sending a message is to prefix each message with its length. Then to read a message, you first read the length, then you read that many bytes. Here's how you might do that:
def send_msg(sock, msg):
# Prefix each message with a 4-byte length (network byte order)
msg = struct.pack('>I', len(msg)) + msg
sock.sendall(msg)
def recv_msg(sock):
# Read message length and unpack it into an integer
raw_msglen = recvall(sock, 4)
if not raw_msglen:
return None
msglen = struct.unpack('>I', raw_msglen)[0]
# Read the message data
return recvall(sock, msglen)
def recvall(sock, n):
# Helper function to recv n bytes or return None if EOF is hit
data = bytearray()
while len(data) < n:
packet = sock.recv(n - len(data))
if not packet:
return None
data.extend(packet)
return data
Then you can use the send_msg
and recv_msg
functions to send and receive whole messages, and they won't have any problems with packets being split or coalesced on the network level.
The classes LocalDate
and LocalDateTime
do not contain information about the timezone or time offset, and seconds since epoch would be ambigious without this information. However, the objects have several methods to convert them into date/time objects with timezones by passing a ZoneId
instance.
LocalDate
LocalDate date = ...;
ZoneId zoneId = ZoneId.systemDefault(); // or: ZoneId.of("Europe/Oslo");
long epoch = date.atStartOfDay(zoneId).toEpochSecond();
LocalDateTime
LocalDateTime time = ...;
ZoneId zoneId = ZoneId.systemDefault(); // or: ZoneId.of("Europe/Oslo");
long epoch = time.atZone(zoneId).toEpochSecond();
It could be your Hibernate entity relationship causing the issue...simply stop lazy loading of that related entity...for example...I resolved below by setting lazy="false" for customerType.
<class name="Customer" table="CUSTOMER">
<id name="custId" type="long">
<column name="CUSTID" />
<generator class="assigned" />
</id>
<property name="name" type="java.lang.String">
<column name="NAME" />
</property>
<property name="phone" type="java.lang.String">
<column name="PHONE" />
</property>
<property name="pan" type="java.lang.String">
<column name="PAN" />
</property>
<many-to-one name="customerType" not-null="true" lazy="false"></many-to-one>
</class>
</hibernate-mapping>
The Java 5 documentation also recommends using this method for the same purpose.
This method can only be used to measure elapsed time and is not related to any other notion of system or wall-clock time.
If you had all the branches to delete in a text file (branches-to-del.txt) (one branch per line), then you could do this to delete all such branches from the remote (origin):
xargs -a branches-to-del.txt git push --delete origin
If ajax request is not fired, please check the select2 class in the select element. Removing the select2 class will fix that issue.
line-height does fix it, but you might have to make it pretty large: on my setttings I have to increase line-height to about 1.8 before the <sup>
no longer interferes with it, but this will vary from font to font.
One possible approach to get consistent line heights is to set your own superscript styling instead of the default vertical-align: super
. If you use top
it won't add anything to the line box, but you may have to reduce font size further to make it fit:
sup { vertical-align: top; font-size: 0.6em; }
Another hack you could try is to use positioning to move it up a bit without affecting the line box:
sup { vertical-align: top; position: relative; top: -0.5em; }
Of course this runs the risk of crashing into the line above if you don't have enough line-height.
I had all sorts of problems with this. I was changing my.cnf and all sorts of crazy things that other versions of this problem tried to show.
What worked for me:
The error I was getting
The MySQL server is running with the --secure-file-priv option so it cannot execute this statement
I was able to fix it by opening /usr/local/mysql/support-files/mysql.server and changing the following line:
$bindir/mysqld_safe --datadir="$datadir" --pid-file="$mysqld_pid_file_path" -- $other_args >/dev/null &
wait_for_pid created "$!" "$mysqld_pid_file_path"; return_value=$?
to
$bindir/mysqld_safe --datadir="$datadir" --pid-file="$mysqld_pid_file_path" --secure-file-priv="" $other_args >/dev/null &
wait_for_pid created "$!" "$mysqld_pid_file_path"; return_value=$?
I solved this problem by:
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;
@Configuration
public class CORSFilter extends CorsFilter {
public CORSFilter(CorsConfigurationSource source) {
super((CorsConfigurationSource) source);
}
@Override
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
throws ServletException, IOException {
response.addHeader("Access-Control-Allow-Headers",
"Access-Control-Allow-Origin, Origin, Accept, X-Requested-With, Content-Type, Access-Control-Request-Method, Access-Control-Request-Headers");
if (response.getHeader("Access-Control-Allow-Origin") == null)
response.addHeader("Access-Control-Allow-Origin", "*");
filterChain.doFilter(request, response);
}
}
and:
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.CorsConfigurationSource;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
@Configuration
public class RestConfig {
@Bean
public CORSFilter corsFilter() {
CorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
CorsConfiguration config = new CorsConfiguration();
config.addAllowedOrigin("http://localhost:4200");
config.addAllowedMethod(HttpMethod.DELETE);
config.addAllowedMethod(HttpMethod.GET);
config.addAllowedMethod(HttpMethod.OPTIONS);
config.addAllowedMethod(HttpMethod.PUT);
config.addAllowedMethod(HttpMethod.POST);
((UrlBasedCorsConfigurationSource) source).registerCorsConfiguration("/**", config);
return new CORSFilter(source);
}
}
I also have found out that after setting default-character-set = utf8
under [mysqld]
title, MySQL 5.5.x would not start under Ubuntu 12.04 (Precise Pangolin).
Specialized packages such as minted
, which relies on Pygments to do the formatting, offer various advantages over the listings
package. To quote from the minted
manual,
Pygments provides far superior syntax highlighting compared to conventional packages. For example, listings basically only highlights strings, comments and keywords. Pygments, on the other hand, can be completely customized to highlight any token kind the source language might support. This might include special formatting sequences inside strings, numbers, different kinds of identifiers and exotic constructs such as HTML tags.
A simple way to add the tab would be to use the \t
tag.
print '{0} \t {1}'.format(count, conv)
join
methodThe join
method is built exactly for these types of situations. You can join any number of DataFrames together with it. The calling DataFrame joins with the index of the collection of passed DataFrames. To work with multiple DataFrames, you must put the joining columns in the index.
The code would look something like this:
filenames = ['fn1', 'fn2', 'fn3', 'fn4',....]
dfs = [pd.read_csv(filename, index_col=index_col) for filename in filenames)]
dfs[0].join(dfs[1:])
With @zero's data, you could do this:
df1 = pd.DataFrame(np.array([
['a', 5, 9],
['b', 4, 61],
['c', 24, 9]]),
columns=['name', 'attr11', 'attr12'])
df2 = pd.DataFrame(np.array([
['a', 5, 19],
['b', 14, 16],
['c', 4, 9]]),
columns=['name', 'attr21', 'attr22'])
df3 = pd.DataFrame(np.array([
['a', 15, 49],
['b', 4, 36],
['c', 14, 9]]),
columns=['name', 'attr31', 'attr32'])
dfs = [df1, df2, df3]
dfs = [df.set_index('name') for df in dfs]
dfs[0].join(dfs[1:])
attr11 attr12 attr21 attr22 attr31 attr32
name
a 5 9 5 19 15 49
b 4 61 14 16 4 36
c 24 9 4 9 14 9
<a href="mailto:[email protected]?subject=Request&body=Hi,%0DName:[your name] %0DGood day " target="_blank"></a>
Try adding %0D to break the line. This will definitely work.
Above code will display the following:
Hi,
Name:[your name]
Good day
attr("dominant-baseline", "central")
Use this code for sending attachment with upload file option using html form in phpmailer
<form method="post" action="" enctype="multipart/form-data">
<input type="text" name="name" placeholder="Your Name *">
<input type="email" name="email" placeholder="Email *">
<textarea name="msg" placeholder="Your Message"></textarea>
<input type="hidden" name="MAX_FILE_SIZE" value="30000" />
<input type="file" name="userfile" />
<input name="contact" type="submit" value="Submit Enquiry" />
</form>
<?php
if(isset($_POST["contact"]))
{
/////File Upload
// In PHP versions earlier than 4.1.0, $HTTP_POST_FILES should be used instead
// of $_FILES.
$uploaddir = 'uploads/';
$uploadfile = $uploaddir . basename($_FILES['userfile']['name']);
echo '<pre>';
if (move_uploaded_file($_FILES['userfile']['tmp_name'], $uploadfile)) {
echo "File is valid, and was successfully uploaded.\n";
} else {
echo "Possible invalid file upload !\n";
}
echo 'Here is some more debugging info:';
print_r($_FILES);
print "</pre>";
////// Email
require_once("class.phpmailer.php");
require_once("class.smtp.php");
$mail_body = array($_POST['name'], $_POST['email'] , $_POST['msg']);
$new_body = "Name: " . $mail_body[0] . ", Email " . $mail_body[1] . " Description: " . $mail_body[2];
$d=strtotime("today");
$subj = 'New enquiry '. date("Y-m-d h:i:sa", $d);
$mail = new PHPMailer(); // create a new object
//$mail->IsSMTP(); // enable SMTP
$mail->SMTPDebug = 1; // debugging: 1 = errors and messages, 2 = messages only ,false = Disable
$mail->Host = "mail.yourhost.com";
$mail->Port = '465';
$mail->SMTPAuth = true; // enable
$mail->SMTPSecure = true;
$mail->IsHTML(true);
$mail->Username = "[email protected]"; //[email protected]
$mail->Password = "password";
$mail->SetFrom("[email protected]", "Your Website Name");
$mail->Subject = $subj;
$mail->Body = $new_body;
$mail->AddAttachment($uploadfile);
$mail->AltBody = 'Upload';
$mail->AddAddress("[email protected]");
if(!$mail->Send())
{
echo "Mailer Error: " . $mail->ErrorInfo;
}
else
{
echo '<p> Success </p> ';
}
}
?>
Use this link for reference.
If you are expecting 4
as output then try this:
char a[]={0x00,0xdc,0x01,0x04};
As already mentioned, array_unique() could be used, but only when dealing with simple data. The objects are not so simple to handle.
When php tries to merge the arrays, it tries to compare the values of the array members. If a member is an object, it cannot get its value and uses the spl hash instead. Read more about spl_object_hash here.
Simply told if you have two objects, instances of the very same class and if one of them is not a reference to the other one - you will end up having two objects, no matter the value of their properties.
To be sure that you don't have any duplicates within the merged array, Imho you should handle the case on your own.
Also if you are going to merge multidimensional arrays, consider using array_merge_recursive() over array_merge().
Try to use setStyle() in onCreate and override onCreateDialog make dialog without title
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setStyle(DialogFragment.STYLE_NORMAL, android.R.style.Theme);
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
Dialog dialog = super.onCreateDialog(savedInstanceState);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
return dialog;
}
or just override onCreate() and setStyle fellow the code.
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setStyle(DialogFragment.STYLE_NO_TITLE, android.R.style.Theme);
}
getAttribute() -> It fetches the text that contains one of any attribute in the HTML tag. Suppose there is an HTML tag like
<input name="Name Locator" value="selenium">Hello</input>
Now getAttribute() fetches the data of the attribute of 'value', which is "Selenium".
Returns:
The attribute's current value or null if the value is not set.
driver.findElement(By.name("Name Locator")).getAttribute("value") //
The field value is retrieved by the getAttribute("value") Selenium WebDriver predefined method and assigned to the String object.
getText() -> delivers the innerText of a WebElement. Get the visible (i.e. not hidden by CSS) innerText of this element, including sub-elements, without any leading or trailing whitespace.
Returns:
The innerText of this element.
driver.findElement(By.name("Name Locator")).getText();
'Hello' will appear
Short answer, yes, sort of. You can use Objective-C++, which you can read about at Apple Developer Connection.
If you know C++ already, learning Objective-C would be pretty simple, if you decided to give that a try. More info on that topic is at the ADC as well.
Construct a Calendar object and use the method add(Calendar.DATE, 1);
My function returns true if is a valid date otherwise returns false :D
function isDate (day, month, year){_x000D_
if(day == 0 ){_x000D_
return false;_x000D_
}_x000D_
switch(month){_x000D_
case 1: case 3: case 5: case 7: case 8: case 10: case 12:_x000D_
if(day > 31)_x000D_
return false;_x000D_
return true;_x000D_
case 2:_x000D_
if (year % 4 == 0)_x000D_
if(day > 29){_x000D_
return false;_x000D_
}_x000D_
else{_x000D_
return true;_x000D_
}_x000D_
if(day > 28){_x000D_
return false;_x000D_
}_x000D_
return true;_x000D_
case 4: case 6: case 9: case 11:_x000D_
if(day > 30){_x000D_
return false;_x000D_
}_x000D_
return true;_x000D_
default:_x000D_
return false;_x000D_
}_x000D_
}_x000D_
_x000D_
console.log(isDate(30, 5, 2017));_x000D_
console.log(isDate(29, 2, 2016));_x000D_
console.log(isDate(29, 2, 2015));
_x000D_
just insert this jquery code to your HTML's head section:
<!--[if lt IE 9 ]>
<script>
$(document).ready(function(){
$('a > button').click(function(){
window.location.href = $(this).parent().attr('href');
});
});
</script>
<![endif]-->
Create a category for UIViewController (say UIViewController+PresentationStyle). Add the following code to it.
-(UIModalPresentationStyle)modalPresentationStyle{
return UIModalPresentationStyleFullScreen;
}
The typical usage of shifting a variable and assigning back to the variable can be rewritten with shorthand operators <<=, >>=, or >>>=, also known in the spec as Compound Assignment Operators.
For example,
i >>= 2
produces the same result as
i = i >> 2
The problem I was facing was that I was able to make a maven build from the command prompt but not from Eclipse.What worked for me in eclipse is that I changed the run configuration to point to JRE folder inside of JDK rather than leaving it in JDK folder only as per the standard.This solution may work for you as well but try this if and only if all the java paths are correct, java and javac are showing the same version as present in the target of pom.xml.
From what I have found, your query is mostly correct. Just change "select r" to "select r.Text" is all and that should solve the problem. This is how MSDN documented how it should work.
Ex:
var query = (from r in table1 orderby r.Text select r.Text).distinct();
I think the problem is making sure that MySQL server has the rights to the file and can edit it.
If you can get it to have access to the file, then you can try setting:
SET GLOBAL slow_query_log = 1;
If not, you can always 'reload' the server after changing the configuration file. On linux its usually /etc/init.d/mysql reload
You can use
alter table <tblname> drop column <colname>
You can go to the .git folder, edit the config file without using the commands.
import java.util.Date;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
private String getDateTime() {
DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
Date date = new Date();
return dateFormat.format(date);
}
I have worked with Xamarin. Here are the positives and negatives I have found:
Positives
Negatives
The subtle difference is that 3NF makes a distinction between key and non-key attributes (also called non-prime attributes) whereas BCNF does not.
This is best explained using Zaniolo's definition of 3NF, which is equivalent to Codd's:
A relation, R, is in 3NF iff for every nontrivial FD (X->A) satisfied by R at least ONE of the following conditions is true:
(a) X is a superkey for R, or
(b) A is a key attribute for R
BCNF requires (a) but doesn't treat (b) as a special case of its own. In other words BCNF requires that every nontrivial determinant is a superkey even its dependent attributes happen to be part of a key.
A relation, R, is in BCNF iff for every nontrivial FD (X->A) satisfied by R the following condition is true:
(a) X is a superkey for R
BCNF is therefore more strict.
The difference is so subtle that what many people informally describe as 3NF is actually BCNF. For example, you stated here that 3NF means "data depends on the key[s]... and nothing but the key[s]", but that is really an informal description of BCNF and not 3NF. 3NF could more accurately be described as "non-key data depends on the keys... and nothing but the keys".
You also stated:
the 3NF quote explicitly says "nothing but the key" meaning that all attributes depend solely on the primary key.
That's an oversimplification. 3NF and BCNF and all the Normal Forms are concerned with all candidate keys and/or superkeys, not just one "primary" key.
Here's an easy function you can use to get it. I used axios to make the API request, but you can use anything else.
async function getCountry(lat, long) {
const { data: { results } } = await axios.get(`https://maps.googleapis.com/maps/api/geocode/json?latlng=${lat},${long}&key=${GOOGLE_API_KEY}`);
const { address_components } = results[0];
for (let i = 0; i < address_components.length; i++) {
const { types, long_name } = address_components[i];
if (types.indexOf("country") !== -1) return long_name;
}
}
I'm using this kind of routine for programmatically chaining animations.
final Animation anim_out = AnimationUtils.loadAnimation(context, android.R.anim.fade_out);
final Animation anim_in = AnimationUtils.loadAnimation(context, android.R.anim.fade_in);
anim_out.setAnimationListener(new AnimationListener()
{
@Override
public void onAnimationStart(Animation animation) {}
@Override
public void onAnimationRepeat(Animation animation) {}
@Override
public void onAnimationEnd(Animation animation)
{
////////////////////////////////////////
// HERE YOU CHANGE YOUR IMAGE CONTENT //
////////////////////////////////////////
//ui_image.setImage...
anim_in.setAnimationListener(new AnimationListener()
{
@Override
public void onAnimationStart(Animation animation) {}
@Override
public void onAnimationRepeat(Animation animation) {}
@Override
public void onAnimationEnd(Animation animation) {}
});
ui_image.startAnimation(anim_in);
}
});
ui_image.startAnimation(anim_out);
Here's a quick, admittedly butchered response, but in a sentence:
1NF : Your table is organized as an unordered set of data, and there are no repeating columns.
2NF: You don't repeat data in one column of your table because of another column.
3NF: Every column in your table relates only to your table's key -- you wouldn't have a column in a table that describes another column in your table which isn't the key.
For more detail, see wikipedia...
You can add this method to your Status enum:
public static String getStringValueFromInt(int i) {
for (Status status : Status.values()) {
if (status.getValue() == i) {
return status.toString();
}
}
// throw an IllegalArgumentException or return null
throw new IllegalArgumentException("the given number doesn't match any Status.");
}
public static void main(String[] args) {
System.out.println(Status.getStringValueFromInt(1)); // OUTPUT: START
}
You can use the UpdateProgress control:
This problem has been fixed in Android Studio v0.1.1, so just update Android Studio and it should work.
Easy and simple way:
select from_unixtime(column_name, '%Y-%m-%d') from table_name
My Solutions:
$("body").scrollspy({ target: ".target", offset: fix_header_height });
$(".target").click(function() {
$("body").animate(
{
scrollTop: $($(this).attr("href")).offset().top - fix_header_height
},
500
);
return;
});
I faced the same problem here's the solution:(Explained)
@Override
protected void configure(HttpSecurity http) throws Exception {
http
.authorizeRequests()
.antMatchers(HttpMethod.POST,"/form").hasRole("ADMIN") // Specific api method request based on role.
.antMatchers("/home","/basic").permitAll() // permited urls to guest users(without login).
.anyRequest().authenticated()
.and()
.formLogin() // not specified form page to use default login page of spring security.
.permitAll()
.and()
.logout().deleteCookies("JSESSIONID") // delete memory of browser after logout.
.and()
.rememberMe().key("uniqueAndSecret"); // remember me check box enabled.
http.csrf().disable(); **// ADD THIS CODE TO DISABLE CSRF IN PROJECT.**
}
new Date(moment('23:04:33', "HH:mm")).getTime()
Output: 1499755980000 (in millisecond) ( 1499755980000/1000) (in second)
Note : this output calculate diff from 1970-01-01 12:0:0 to now and we need to implement the moment.js
Finally, I solved it. Even though the solution is a bit lengthy, I think its the simplest. The solution is as follows:
- Install Visual Studio 2008
- Install the service Package 1 (SP1)
- Install SQL Server 2008 r2
You need to use to_timestamp()
to convert your string to a proper timestamp
value:
to_timestamp('12-01-2012 21:24:00', 'dd-mm-yyyy hh24:mi:ss')
If your column is of type DATE
(which also supports seconds), you need to use to_date()
to_date('12-01-2012 21:24:00', 'dd-mm-yyyy hh24:mi:ss')
To get this into a where
condition use the following:
select *
from TableA
where startdate >= to_timestamp('12-01-2012 21:24:00', 'dd-mm-yyyy hh24:mi:ss')
and startdate <= to_timestamp('12-01-2012 21:25:33', 'dd-mm-yyyy hh24:mi:ss')
You never need to use to_timestamp()
on a column that is of type timestamp
.
Adding to what @KyleMit said, consider using:
col-md-*
classes for the larger outer columnscol-xs-*
classes for the smaller inner columnsThis will be useful when you view the page on different screen sizes.
On a small screen, the wrapping of larger outer columns will then happen while maintaining the smaller inner columns, if possible
Assuming that end_date
and start_date
are both of class ActiveSupport::TimeWithZone
in Rails, then you can use:
(end_date.to_date - start_date.to_date).to_i
A parameter is the variable which is part of the method’s signature (method declaration). An argument is an expression used when calling the method.
Consider the following code:
void Foo(int i, float f)
{
// Do things
}
void Bar()
{
int anInt = 1;
Foo(anInt, 2.0);
}
Here i
and f
are the parameters, and anInt
and 2.0
are the arguments.
The problem by using stream().forEach(..)
with a call to add
or put
inside the forEach
(so you mutate the external myMap
or myList
instance) is that you can run easily into concurrency issues if someone turns the stream in parallel and the collection you are modifying is not thread safe.
One approach you can take is to first partition the entries in the original map. Once you have that, grab the corresponding list of entries and collect them in the appropriate map and list.
Map<Boolean, List<Map.Entry<K, V>>> partitions =
animalMap.entrySet()
.stream()
.collect(partitioningBy(e -> e.getValue() == null));
Map<K, V> myMap =
partitions.get(false)
.stream()
.collect(toMap(Map.Entry::getKey, Map.Entry::getValue));
List<K> myList =
partitions.get(true)
.stream()
.map(Map.Entry::getKey)
.collect(toList());
... or if you want to do it in one pass, implement a custom collector (assuming a Tuple2<E1, E2>
class exists, you can create your own), e.g:
public static <K,V> Collector<Map.Entry<K, V>, ?, Tuple2<Map<K, V>, List<K>>> customCollector() {
return Collector.of(
() -> new Tuple2<>(new HashMap<>(), new ArrayList<>()),
(pair, entry) -> {
if(entry.getValue() == null) {
pair._2.add(entry.getKey());
} else {
pair._1.put(entry.getKey(), entry.getValue());
}
},
(p1, p2) -> {
p1._1.putAll(p2._1);
p1._2.addAll(p2._2);
return p1;
});
}
with its usage:
Tuple2<Map<K, V>, List<K>> pair =
animalMap.entrySet().parallelStream().collect(customCollector());
You can tune it more if you want, for example by providing a predicate as parameter.
Facelets is a XML based view technology which uses XHTML+XML to generate HTML output. XML has five special characters which has special treatment by the XML parser:
<
the start of a tag.>
the end of a tag."
the start and end of an attribute value.'
the alternative start and end of an attribute value.&
the start of an entity (which ends with ;
).In case of <
, the XML parser is implicitly looking for the tag name and the end tag >
. However, in your particular case, you were using <
as a JavaScript operator, not as an XML entity. This totally explains the XML parsing error you got:
The content of elements must consist of well-formed character data or markup.
In essence, you're writing JavaScript code in the wrong place, a XML document instead of a JS file, so you should be escaping all XML special characters accordingly. The <
must be escaped as <
.
So, essentially, the
for (var i = 0; i < length; i++) {
must become
for (var i = 0; i < length; i++) {
to make it XML-valid.
However, this makes the JavaScript code harder to read and maintain. As stated in Mozilla Developer Network's excellent document Writing JavaScript for XHTML, you should be placing the JavaScript code in a character data (CDATA) block. Thus, in JSF terms, that would be:
<h:outputScript>
<![CDATA[
// ...
]]>
</h:outputScript>
The XML parser will interpret the block's contents as "plain vanilla" character data and not as XML and hence interpret the XML special characters "as-is".
But, much better is to just put the JS code in its own JS file which you include by <script src>
, or in JSF terms, the <h:outputScript>
.
<h:outputScript name="functions.js" target="head" />
This way you don't need to worry about XML-special characters in your JS code. Additional advantage is that this gives the browser the opportunity to cache the JS file so that average response size is smaller.
The original answer is that your path has to join prefix like Uri.parse("file://" + file.getPath);
For those looking for an example of how to pass the OAuth2 authorization (access token) in the header (as opposed to using a request or body parameter), here is how it's done:
Authorization: Bearer 0b79bab50daca910b000d4f1a2b675d604257e42
Use the Windows 'copy' command.
C:\Users\dan>help copy
Copies one or more files to another location.
COPY [/D] [/V] [/N] [/Y | /-Y] [/Z] [/L] [/A | /B ] source [/A | /B]
[+ source [/A | /B] [+ ...]] [destination [/A | /B]]
source Specifies the file or files to be copied.
/A Indicates an ASCII text file.
/B Indicates a binary file.
/D Allow the destination file to be created decrypted
destination Specifies the directory and/or filename for the new file(s).
/V Verifies that new files are written correctly.
/N Uses short filename, if available, when copying a file with
a non-8dot3 name.
/Y Suppresses prompting to confirm you want to overwrite an
existing destination file.
/-Y Causes prompting to confirm you want to overwrite an
existing destination file.
/Z Copies networked files in restartable mode.
/L If the source is a symbolic link, copy the link to the
target
instead of the actual file the source link points to.
The switch /Y may be preset in the COPYCMD environment variable.
This may be overridden with /-Y on the command line. Default is
to prompt on overwrites unless COPY command is being executed from
within a batch script.
**To append files, specify a single file for destination, but
multiple files for source (using wildcards or file1+file2+file3
format).**
So in your case:
copy *.txt destination.txt
Will concatenate all .txt files in alphabetical order into destination.txt
Thanks for asking, I learned something new!
Branches are made of wood and grow from the trunk of the tree. Tags are made of paper (derivative of wood) and hang like Christmas Ornaments from various places in the tree.
Your project is the tree, and your feature that will be added to the project will grow on a branch. The answer is branch.
There could be many reasons for Index not being used. Even after you specify hints, there are chances Oracle optimizer thinks otherwise and decide not to use Index. You need to go through the EXPLAIN PLAN part and see what is the cost of the statement with INDEX and without INDEX.
Assuming the Oracle uses CBO. Most often, if the optimizer thinks the cost is high with INDEX, even though you specify it in hints, the optimizer will ignore and continue for full table scan. Your first action should be checking DBA_INDEXES to know when the statistics are LAST_ANALYZED. If not analyzed, you can set table, index for analyze.
begin
DBMS_STATS.GATHER_INDEX_STATS ( OWNNAME=>user
, INDNAME=>IndexName);
end;
For table.
begin
DBMS_STATS.GATHER_TABLE_STATS ( OWNNAME=>user
, TABNAME=>TableName);
end;
In extreme cases, you can try setting up the statistics on your own.
The full list is:
DB, DW, DD, DQ, DT, DDQ, and DO (used to declare initialized data in the output file.)
See: http://www.tortall.net/projects/yasm/manual/html/nasm-pseudop.html
They can be invoked in a wide range of ways: (Note: for Visual-Studio - use "h" instead of "0x" syntax - eg: not 0x55 but 55h instead):
db 0x55 ; just the byte 0x55
db 0x55,0x56,0x57 ; three bytes in succession
db 'a',0x55 ; character constants are OK
db 'hello',13,10,'$' ; so are string constants
dw 0x1234 ; 0x34 0x12
dw 'A' ; 0x41 0x00 (it's just a number)
dw 'AB' ; 0x41 0x42 (character constant)
dw 'ABC' ; 0x41 0x42 0x43 0x00 (string)
dd 0x12345678 ; 0x78 0x56 0x34 0x12
dq 0x1122334455667788 ; 0x88 0x77 0x66 0x55 0x44 0x33 0x22 0x11
ddq 0x112233445566778899aabbccddeeff00
; 0x00 0xff 0xee 0xdd 0xcc 0xbb 0xaa 0x99
; 0x88 0x77 0x66 0x55 0x44 0x33 0x22 0x11
do 0x112233445566778899aabbccddeeff00 ; same as previous
dd 1.234567e20 ; floating-point constant
dq 1.234567e20 ; double-precision float
dt 1.234567e20 ; extended-precision float
DT does not accept numeric constants as operands, and DDQ does not accept float constants as operands. Any size larger than DD does not accept strings as operands.
The ionic approach rocks:
https://dotnetzip.codeplex.com/wikipage?title=PS-Examples
supports passwords, other crypto methods, etc.
Below code avoids creating infinite loop. Assume XYZ is the string which we are looking for in the workbook.
Private Sub CommandButton1_Click()
Dim Sh As Worksheet, myCounter
Dim Loc As Range
For Each Sh In ThisWorkbook.Worksheets
With Sh.UsedRange
Set Loc = .Cells.Find(What:="XYZ")
If Not Loc Is Nothing Then
MsgBox ("Value is found in " & Sh.Name)
myCounter = 1
Set Loc = .FindNext(Loc)
End If
End With
Next
If myCounter = 0 Then
MsgBox ("Value not present in this worrkbook")
End If
End Sub
apparently, the GET and/or the POST variable(s) do(es) not exist. simply test if "isset". (pseudocode):
if(isset($_GET['action'];)) {$action = $_GET['action'];} else { RECOVER FROM ERROR CODE }
I assume you are using Series.plot() to plot your data. If you look at the docs for Series.plot() here:
http://pandas.pydata.org/pandas-docs/dev/generated/pandas.Series.plot.html
there is no color parameter listed where you might be able to set the colors for your bar graph.
However, the Series.plot() docs state the following at the end of the parameter list:
kwds : keywords
Options to pass to matplotlib plotting method
What that means is that when you specify the kind argument for Series.plot() as bar, Series.plot() will actually call matplotlib.pyplot.bar(), and matplotlib.pyplot.bar() will be sent all the extra keyword arguments that you specify at the end of the argument list for Series.plot().
If you examine the docs for the matplotlib.pyplot.bar() method here:
http://matplotlib.org/api/pyplot_api.html#matplotlib.pyplot.bar
..it also accepts keyword arguments at the end of it's parameter list, and if you peruse the list of recognized parameter names, one of them is color, which can be a sequence specifying the different colors for your bar graph.
Putting it all together, if you specify the color keyword argument at the end of your Series.plot() argument list, the keyword argument will be relayed to the matplotlib.pyplot.bar() method. Here is the proof:
import pandas as pd
import matplotlib.pyplot as plt
s = pd.Series(
[5, 4, 4, 1, 12],
index = ["AK", "AX", "GA", "SQ", "WN"]
)
#Set descriptions:
plt.title("Total Delay Incident Caused by Carrier")
plt.ylabel('Delay Incident')
plt.xlabel('Carrier')
#Set tick colors:
ax = plt.gca()
ax.tick_params(axis='x', colors='blue')
ax.tick_params(axis='y', colors='red')
#Plot the data:
my_colors = 'rgbkymc' #red, green, blue, black, etc.
pd.Series.plot(
s,
kind='bar',
color=my_colors,
)
plt.show()
Note that if there are more bars than colors in your sequence, the colors will repeat.
Nothing worked for me except, I loggined using pgAdmin4 and on the Dashboard I disconnected all connections except pgAdmin4 and then was able to rename by right lick on the database and properties and typed new name.
You have to use the contents()
method:
$("#myiframe").contents().find("#myContent")
Source: http://simple.procoding.net/2008/03/21/how-to-access-iframe-in-jquery/
API Doc: https://api.jquery.com/contents/
Apply this if you use laravel.
Laravel has a not_regex where field under validation must not match the given regular expression; uses the PHP preg_match
function internally.
'email' => 'not_regex:/^.+$/i'
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.item_id:
//Your Code....
item.setEnabled(false);
break;
}
return super.onOptionsItemSelected(item);
}
Arrays are non-negative integer indexed , so maximum array size you can access would be Integer.MAX_VALUE
. The other thing is how big array you can create. It depends on the maximum memory available to your JVM
and the content type of the array. Each array element has it's size, example. byte = 1 byte
, int = 4 bytes
, Object reference = 4 bytes (on a 32 bit system)
So if you have 1 MB
memory available on your machine, you could allocate an array of byte[1024 * 1024]
or Object[256 * 1024]
.
Answering your question - You can allocate an array of size (maximum available memory / size of array item).
Summary - Theoretically the maximum size of an array will be Integer.MAX_VALUE
. Practically it depends on how much memory your JVM
has and how much of that has already been allocated to other objects.
Try ABCpdf from webSupergoo. It's a commercial solution, not open source, but the standard edition can be obtained free of charge and will do what you are asking.
ABCpdf fully supports HTML and CSS, live forms and live links. It also uses Microsoft XML Core Services (MSXML) while rendering, so the results should match exactly what you see in Internet Explorer.
The on-line demo can be used to test HTML to PDF rendering without needing to install any software. See: http://www.abcpdfeditor.com/
The following C# code example shows how to render a single page HTML document.
Doc theDoc = new Doc();
theDoc.AddImageUrl("http://www.example.com/");
theDoc.Save("htmlimport.pdf");
theDoc.Clear();
To render multiple pages you'll need the AddImageToChain function, documented here: http://www.websupergoo.com/helppdf7net/source/5-abcpdf6/doc/1-methods/addimagetochain.htm
ISNA is the best function to use. I just did. I wanted all cells whose value was NOT in an array to conditionally format to a certain color.
=ISNA(VLOOKUP($A2,Sheet1!$A:$D,2,FALSE))
Spring Boot provided several application listener while try to create application context one of them is ApplicationFailedEvent. We can use to know weather the application context initialized or not.
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.context.event.ApplicationFailedEvent;
import org.springframework.context.ApplicationListener;
public class ApplicationErrorListener implements
ApplicationListener<ApplicationFailedEvent> {
private static final Logger LOGGER =
LoggerFactory.getLogger(ApplicationErrorListener.class);
@Override
public void onApplicationEvent(ApplicationFailedEvent event) {
if (event.getException() != null) {
LOGGER.info("!!!!!!Looks like something not working as
expected so stoping application.!!!!!!");
event.getApplicationContext().close();
System.exit(-1);
}
}
}
Add to above listener class to SpringApplication.
new SpringApplicationBuilder(Application.class)
.listeners(new ApplicationErrorListener())
.run(args);
A MUCH faster solution for large dataset and limited number of colors is the use of Pandas and the groupby function:
import pandas as pd
import numpy as np
import matplotlib.pyplot as plt
import time
# a generic set of data with associated colors
nsamples=1000
x=np.random.uniform(0,10,nsamples)
y=np.random.uniform(0,10,nsamples)
colors={0:'r',1:'g',2:'b',3:'k'}
c=[colors[i] for i in np.round(np.random.uniform(0,3,nsamples),0)]
plt.close('all')
# "Fast" Scatter plotting
starttime=time.time()
# 1) make a dataframe
df=pd.DataFrame()
df['x']=x
df['y']=y
df['c']=c
plt.figure()
# 2) group the dataframe by color and loop
for g,b in df.groupby(by='c'):
plt.scatter(b['x'],b['y'],color=g)
print('Fast execution time:', time.time()-starttime)
# "Slow" Scatter plotting
starttime=time.time()
plt.figure()
# 2) group the dataframe by color and loop
for i in range(len(x)):
plt.scatter(x[i],y[i],color=c[i])
print('Slow execution time:', time.time()-starttime)
plt.show()
When you initialize unsigned int a to -1;
it means that you are storing the 2's
complement of -1
into the memory of a
.
Which is nothing but 0xffffffff
or 4294967295
.
Hence when you print it using %x or %u
format specifier you get that output.
By specifying signedness of a variable to decide on the minimum and maximum limit of value that can be stored.
Like with unsigned int
: the range is from 0 to 4,294,967,295
and int
: the range is from -2,147,483,648 to 2,147,483,647
For more info on signedness refer this