If you set the margin to be margin:0 auto
the image will be centered.
This will give top + bottom a margin of 0, and left and right a margin of 'auto'. Since the div has a width (200px), the image will be 200px wide and the browser will auto set the left and right margin to half of what is left on the page, which will result in the image being centered.
Sometimes, splice is not enough especially if your array is involved in a FILTER logic. So, first of all you could check if your element does exist to be absolute sure to remove that exact element:
if (array.find(x => x == element)) {
array.splice(array.findIndex(x => x == element), 1);
}
The assert() function can diagnose program bugs. In C, it is defined in <assert.h>
, and in C++ it is defined in <cassert>
. Its prototype is
void assert(int expression);
The argument expression can be anything you want to test--a variable or any C expression. If expression evaluates to TRUE, assert() does nothing. If expression evaluates to FALSE, assert() displays an error message on stderr and aborts program execution.
How do you use assert()? It is most frequently used to track down program bugs (which are distinct from compilation errors). A bug doesn't prevent a program from compiling, but it causes it to give incorrect results or to run improperly (locking up, for example). For instance, a financial-analysis program you're writing might occasionally give incorrect answers. You suspect that the problem is caused by the variable interest_rate taking on a negative value, which should never happen. To check this, place the statement
assert(interest_rate >= 0); at locations in the program where interest_rate is used. If the variable ever does become negative, the assert() macro alerts you. You can then examine the relevant code to locate the cause of the problem.
To see how assert() works, run the sample program below. If you enter a nonzero value, the program displays the value and terminates normally. If you enter zero, the assert() macro forces abnormal program termination. The exact error message you see will depend on your compiler, but here's a typical example:
Assertion failed: x, file list19_3.c, line 13 Note that, in order for assert() to work, your program must be compiled in debug mode. Refer to your compiler documentation for information on enabling debug mode (as explained in a moment). When you later compile the final version in release mode, the assert() macros are disabled.
int x;
printf("\nEnter an integer value: ");
scanf("%d", &x);
assert(x >= 0);
printf("You entered %d.\n", x);
return(0);
Enter an integer value: 10
You entered 10.
Enter an integer value: -1
Error Message: Abnormal program termination
Your error message might differ, depending on your system and compiler, but the general idea is the same.
There is a way to increase character using ascii_letters
from string
package which ascii_letters
is a string that contains all English alphabet, uppercase and lowercase:
>>> from string import ascii_letters
>>> ascii_letters[ascii_letters.index('a') + 1]
'b'
>>> ascii_letters
'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
Also it can be done manually;
>>> letters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
>>> letters[letters.index('c') + 1]
'd'
The java.util.Date
class isn't actually deprecated, just that constructor, along with a couple other constructors/methods are deprecated. It was deprecated because that sort of usage doesn't work well with internationalization. The Calendar
class should be used instead:
Calendar cal = Calendar.getInstance();
cal.set(Calendar.YEAR, 1988);
cal.set(Calendar.MONTH, Calendar.JANUARY);
cal.set(Calendar.DAY_OF_MONTH, 1);
Date dateRepresentation = cal.getTime();
Take a look at the date Javadoc:
http://download.oracle.com/javase/6/docs/api/java/util/Date.html
This can be done easily and cleanly with float
.
Demo: jsfiddle.net/KcdpW
HTML:
<ul>
<li>Item 1 <span class="right">(1)</span></li>
<li>Item 2 <span class="right">(2)</span></li>
</ul>?
CSS:
ul {
width: 10em
}
.right {
float: right
}?
The problem is that you aren't correctly escaping the input string, try:
echo "\"member\":\"time\"" | grep -e "member\""
Alternatively, you can use unescaped double quotes within single quotes:
echo '"member":"time"' | grep -e 'member"'
It's a matter of preference which you find clearer, although the second approach prevents you from nesting your command within another set of single quotes (e.g. ssh 'cmd'
).
Share on Facebook
private ShareDialog shareDialog;
shareDialog = new ShareDialog((AppCompatActivity) context);
shareDialog.registerCallback(callbackManager, new FacebookCallback<Sharer.Result>() {
@Override
public void onSuccess(Sharer.Result result) {
Log.e("TAG","Facebook Share Success");
logoutFacebook();
}
@Override
public void onCancel() {
Log.e("TAG","Facebook Sharing Cancelled by User");
}
@Override
public void onError(FacebookException error) {
Log.e("TAG","Facebook Share Success: Error: " + error.getLocalizedMessage());
}
});
if (ShareDialog.canShow(ShareLinkContent.class)) {
ShareLinkContent linkContent = new ShareLinkContent.Builder()
.setQuote("Content goes here")
.setContentUrl(Uri.parse("URL goes here"))
.build();
shareDialog.show(linkContent);
}
AndroidManifest.xml
<!-- Facebook Share -->
<provider
android:name="com.facebook.FacebookContentProvider"
android:authorities="com.facebook.app.FacebookContentProvider{@string/facebook_app_id}"
android:exported="true" />
<!-- Facebook Share -->
dependencies {
implementation 'com.facebook.android:facebook-share:[5,6)' //Facebook Share
}
Share on Twitter
public void shareProductOnTwitter() {
TwitterConfig config = new TwitterConfig.Builder(this)
.logger(new DefaultLogger(Log.DEBUG))
.twitterAuthConfig(new TwitterAuthConfig(getResources().getString(R.string.twitter_api_key), getResources().getString(R.string.twitter_api_secret)))
.debug(true)
.build();
Twitter.initialize(config);
twitterAuthClient = new TwitterAuthClient();
TwitterSession twitterSession = TwitterCore.getInstance().getSessionManager().getActiveSession();
if (twitterSession == null) {
twitterAuthClient.authorize(this, new Callback<TwitterSession>() {
@Override
public void success(Result<TwitterSession> result) {
TwitterSession twitterSession = result.data;
shareOnTwitter();
}
@Override
public void failure(TwitterException e) {
Log.e("TAG","Twitter Error while authorize user " + e.getMessage());
}
});
} else {
shareOnTwitter();
}
}
private void shareOnTwitter() {
StatusesService statusesService = TwitterCore.getInstance().getApiClient().getStatusesService();
Call<Tweet> tweetCall = statusesService.update("Content goes here", null, false, null, null, null, false, false, null);
tweetCall.enqueue(new Callback<Tweet>() {
@Override
public void success(Result<Tweet> result) {
Log.e("TAG","Twitter Share Success");
logoutTwitter();
}
@Override
public void failure(TwitterException exception) {
Log.e("TAG","Twitter Share Failed with Error: " + exception.getLocalizedMessage());
}
});
}
Two issues with answers given so far, if , for instance, one streams such non-standard JSON. Because then one might have to interpret an incoming string (not a python dictionary).
Issue 1 - demjson
:
With Python 3.7.+ and using conda I wasn't able to install demjson since obviosly it does not support Python >3.5 currently. So I need a solution with simpler means, for instance ast
and/or json.dumps
.
Issue 2 - ast
& json.dumps
:
If a JSON is both single quoted and contains a string in at least one value, which in turn contains single quotes, the only simple yet practical solution I have found is applying both:
In the following example we assume line
is the incoming JSON string object :
>>> line = str({'abc':'008565','name':'xyz','description':'can control TV\'s and more'})
Step 1: convert the incoming string into a dictionary using ast.literal_eval()
Step 2: apply json.dumps
to it for the reliable conversion of keys and values, but without touching the contents of values:
>>> import ast
>>> import json
>>> print(json.dumps(ast.literal_eval(line)))
{"abc": "008565", "name": "xyz", "description": "can control TV's and more"}
json.dumps
alone would not do the job because it does not interpret the JSON, but only see the string. Similar for ast.literal_eval()
: although it interprets correctly the JSON (dictionary), it does not convert what we need.
strcat
has the declaration:
char *strcat(char *dest, const char *src)
It expects 2 strings. While this compiles:
char str[1024] = "Hello World";
char tmp = '.';
strcat(str, tmp);
It will cause bad memory issues because strcat
is looking for a null terminated cstring. You can do this:
char str[1024] = "Hello World";
char tmp[2] = ".";
strcat(str, tmp);
If you really want to append a char you will need to make your own function. Something like this:
void append(char* s, char c) {
int len = strlen(s);
s[len] = c;
s[len+1] = '\0';
}
append(str, tmp)
Of course you may also want to check your string size etc to make it memory safe.
You don't need to compile python for Mac/Windows/Linux. It is an interpreted language, so you simply need to have the Python interpreter installed on the system of your choice (it is available for all three platforms).
As for a GUI library that works cross platform, Python's Tk/Tcl widget library works very well, and I believe is sufficiently cross platform.
Tkinter is the python interface to Tk/Tcl
From the python project webpage:
Tkinter is not the only GuiProgramming toolkit for Python. It is however the most commonly used one, and almost the only one that is portable between Unix, Mac and Windows
Instead simply do:
$(function() {
$(".rnd").each(function(i) {
var id = $(this).attr("id");
if (id === undefined || id.length === 0) {
// this is the line that's giving me problems.
// .attr("tag") returns undefined
// change the below line...
$(this).attr("id", "rnd" + this.tagName.toLowerCase() + "_" + i.toString());
});
});
Try to use https://www.pagedjs.org/. It polyfills page counter, header-/footer-functionality for all major browsers.
@page {
@bottom-left {
content: counter(page) ' of ' counter(pages);
}
}
It's so much more comfortable compared to alternatives like PrinceXML, Antennahouse, WeasyPrince, PDFReactor, etc ...
And it is totally free! No pricing or whatever. It really saved my life!
$date = date('Y-m-d H:i:s'); with the type: 'datetime' worked very good for me as i wanted to print whole date and timestamp..
$date = date('Y-m-d H:i:s'); $stmtc->bindParam(2,$date);
The & and | are usually bitwise operations.
Where as && and || are usually logical operations.
For comparison purposes, it's perfectly fine provided that everything returns either a 1 or a 0. Otherwise, it can return false positives. You should avoid this though to prevent hard to read bugs.
You can learn some tutorials for JSP page direct access database (mysql) here
Notes:
import sql tag library in jsp page
<%@ taglib uri="http://java.sun.com/jsp/jstl/sql" prefix="sql"%>
then set datasource on page
<sql:setDataSource var="ds" driver="com.mysql.jdbc.Driver" url="jdbc:mysql://<yourhost>/<yourdb>" user="<user>" password="<password>"/>
Now query what you want on page
<sql:query dataSource="${ds}" var="result"> //ref defined 'ds'
SELECT * from <your-table>;
</sql:query>
Finally you can populate dropdowns on page using c:forEach
tag to iterate result rows in select
element
<c:forEach var="row" items="${result.rows}"> //ref set var 'result'
<option value='<c:out value="${row.key}"/>'><c:out value="${row.value}"/</option>
</c:forEach>
Depending on the Java version (or JDK, SDK, JRE... i dunno, im new to the Java ecosystem), the JsonObject
is abstract. So, this is a new implementation:
import javax.json.Json;
import javax.json.JsonObject;
...
try (PrintWriter out = response.getWriter()) {
response.setContentType("application/json");
response.setCharacterEncoding("UTF-8");
JsonObject json = Json.createObjectBuilder().add("foo", "bar").build();
out.print(json.toString());
}
This is more better answer i would like to suggest on mouse over and without mouse over
input[type='number'] {
appearance: textfield;
}
input[type='number']::-webkit-inner-spin-button,
input[type='number']::-webkit-outer-spin-button,
input[type='number']:hover::-webkit-inner-spin-button,
input[type='number']:hover::-webkit-outer-spin-button {
-webkit-appearance: none;
margin: 0; }
$( "#sortable" ).sortable({
change: function(event, ui) {
var pos = ui.helper.index() < ui.placeholder.index()
? { start: ui.helper.index(), end: ui.placeholder.index() }
: { start: ui.placeholder.index(), end: ui.helper.index() }
$(this)
.children().removeClass( 'highlight' )
.not( ui.helper ).slice( pos.start, pos.end ).addClass( 'highlight' );
},
stop: function(event, ui) {
$(this).children().removeClass( 'highlight' );
}
});
An example of how it could be done inside change event without storing arbitrary data into element storage. Since the element where drag starts is ui.helper
, and the element of current position is ui.placeholder
, we can take the elements between those two indexes and highlight them. Also, we can use this
inside handler since it refers to the element that the widget is attached. The example works with dragging in both directions.
Primarily what that means is that there are too many concurrent requests and further that they exceed the default 1000 queued requests. That is there are 1000 or more queued requests to your website.
This could happen (assuming there are no faults in your app) if there are long running tasks and as a result the Request queue is backed up.
Depending on how the application pool has been set up you may see this kind of thing. Typically, the app pool's Process Model has an item called Maximum Worker Processes. By default this is 1. If you set it to more than 1 (typically up to a max of the number of cores on the hardware) you may not see this happen.
Just to note that unless the site is extremely busy you should not see this. If you do, it's really pointing to long running tasks
Might help some else - I came here because I missed putting two // after http:. This is what I had:
http:/abc.my.domain.com:55555/update
The first answer does't work anymore.
This worked for me:
from selenium.webdriver.firefox.options import Options as FirefoxOptions
from selenium import webdriver
options = FirefoxOptions()
options.add_argument("--headless")
driver = webdriver.Firefox(options=options)
driver.get("http://google.com")
Try box-sizing. For the list:
height: 100%;
/* Presuming 10px header height */
padding-top: 10px;
/* Firefox */
-moz-box-sizing: border-box;
/* WebKit */
-webkit-box-sizing: border-box;
/* Standard */
box-sizing: border-box;
For the header:
position: absolute;
left: 0;
top: 0;
height: 10px;
Of course, the parent container should has something like:
position: relative;
A simple way is.....
#include <stdio.h>
#include <stdlib.h>
#define SHELLSCRIPT "\
#/bin/bash \n\
echo \"hello\" \n\
echo \"how are you\" \n\
echo \"today\" \n\
"
/*Also you can write using char array without using MACRO*/
/*You can do split it with many strings finally concatenate
and send to the system(concatenated_string); */
int main()
{
puts("Will execute sh with the following script :");
puts(SHELLSCRIPT);
puts("Starting now:");
system(SHELLSCRIPT); //it will run the script inside the c code.
return 0;
}
Say thanks to
Yoda @http://www.unix.com/programming/216190-putting-bash-script-c-program.html
This article describes how to render text in OpenGL using various techniques.
With only using opengl, there are several ways:
There can be many things:
First attempt, make a select of this field in its source table;
Check the instance of the sql script window, you may be in a different instance;
Check if your join is correct;
Verify query ambiguity, maybe you are making a wrong table reference
Of these checks, run the T-sql script again
[Image of the script SQL][1]
[1]: https://i.stack.imgur.com/r59ZY.png`enter code here
As I can see, you are comparing the message with the empty string using ==.
Its very hard to write the full code, but I can tell the flow of code - first, create db class & method inide that which will return the connection. second, create a servelet(ex-login.java) & import that db class onto that servlet. third, create instance of imported db class with the help of new operator & call the connection method of that db class. fourth, creaet prepared statement & execute statement & put this code in try catch block for exception handling.Use if-else condition in the try block to navigate your login page based on success or failure.
I hope, it will help you. If any problem, then please revert.
Nikhil Pahariya
The addEdge is trusting more than the correction of the addNode method. It's also trusting that the addNode method has been invoked by other method. I'd recommend to include check if m is not null.
And another expansion:
# create dummy matrix
set.seed(10)
m <- matrix(round(runif(25, 1, 5)), 5)
d <- as.data.frame(m)
If you want to assign new column names you can do following on data.frame
:
# an identical effect can be achieved with colnames()
names(d) <- LETTERS[1:5]
> d
A B C D E
1 3 2 4 3 4
2 2 2 3 1 3
3 3 2 1 2 4
4 4 3 3 3 2
5 1 3 2 4 3
If you, however run previous command on matrix
, you'll mess things up:
names(m) <- LETTERS[1:5]
> m
[,1] [,2] [,3] [,4] [,5]
[1,] 3 2 4 3 4
[2,] 2 2 3 1 3
[3,] 3 2 1 2 4
[4,] 4 3 3 3 2
[5,] 1 3 2 4 3
attr(,"names")
[1] "A" "B" "C" "D" "E" NA NA NA NA NA NA NA NA NA NA NA NA NA NA
[20] NA NA NA NA NA NA
Since matrix can be regarded as two-dimensional vector, you'll assign names only to first five values (you don't want to do that, do you?). In this case, you should stick with colnames()
.
So there...
The difference between
import java.util.*;
and
import java.util.*;
import java.util.List;
import java.util.Arrays;
becomes apparent when the code refers to some other List
or Arrays
(for example, in the same package, or also imported generally). In the first case, the compiler will assume that the Arrays
declared in the same package is the one to use, in the latter, since it is declared specifically, the more specific java.util.Arrays
will be used.
You should use System.Windows.Forms.Cursor.Position: "A Point that represents the cursor's position in screen coordinates."
Use <br />
OR <br>
-
<li>Post by<br /><a>Author</a></li>
OR
<li>Post by<br><a>Author</a></li>
or
make the a
element display:block;
<li>Post by <a style="display:block;">Author</a></li>
How can I make two decorators in Python that would do the following?
You want the following function, when called:
@makebold @makeitalic def say(): return "Hello"
To return:
<b><i>Hello</i></b>
To most simply do this, make decorators that return lambdas (anonymous functions) that close over the function (closures) and call it:
def makeitalic(fn):
return lambda: '<i>' + fn() + '</i>'
def makebold(fn):
return lambda: '<b>' + fn() + '</b>'
Now use them as desired:
@makebold
@makeitalic
def say():
return 'Hello'
and now:
>>> say()
'<b><i>Hello</i></b>'
But we seem to have nearly lost the original function.
>>> say
<function <lambda> at 0x4ACFA070>
To find it, we'd need to dig into the closure of each lambda, one of which is buried in the other:
>>> say.__closure__[0].cell_contents
<function <lambda> at 0x4ACFA030>
>>> say.__closure__[0].cell_contents.__closure__[0].cell_contents
<function say at 0x4ACFA730>
So if we put documentation on this function, or wanted to be able to decorate functions that take more than one argument, or we just wanted to know what function we were looking at in a debugging session, we need to do a bit more with our wrapper.
We have the decorator wraps
from the functools
module in the standard library!
from functools import wraps
def makeitalic(fn):
# must assign/update attributes from wrapped function to wrapper
# __module__, __name__, __doc__, and __dict__ by default
@wraps(fn) # explicitly give function whose attributes it is applying
def wrapped(*args, **kwargs):
return '<i>' + fn(*args, **kwargs) + '</i>'
return wrapped
def makebold(fn):
@wraps(fn)
def wrapped(*args, **kwargs):
return '<b>' + fn(*args, **kwargs) + '</b>'
return wrapped
It is unfortunate that there's still some boilerplate, but this is about as simple as we can make it.
In Python 3, you also get __qualname__
and __annotations__
assigned by default.
So now:
@makebold
@makeitalic
def say():
"""This function returns a bolded, italicized 'hello'"""
return 'Hello'
And now:
>>> say
<function say at 0x14BB8F70>
>>> help(say)
Help on function say in module __main__:
say(*args, **kwargs)
This function returns a bolded, italicized 'hello'
So we see that wraps
makes the wrapping function do almost everything except tell us exactly what the function takes as arguments.
There are other modules that may attempt to tackle the problem, but the solution is not yet in the standard library.
Usage:
select replace_foreign_key('user_rates_posts', 'post_id', 'ON DELETE CASCADE');
Function:
CREATE OR REPLACE FUNCTION
replace_foreign_key(f_table VARCHAR, f_column VARCHAR, new_options VARCHAR)
RETURNS VARCHAR
AS $$
DECLARE constraint_name varchar;
DECLARE reftable varchar;
DECLARE refcolumn varchar;
BEGIN
SELECT tc.constraint_name, ccu.table_name AS foreign_table_name, ccu.column_name AS foreign_column_name
FROM
information_schema.table_constraints AS tc
JOIN information_schema.key_column_usage AS kcu
ON tc.constraint_name = kcu.constraint_name
JOIN information_schema.constraint_column_usage AS ccu
ON ccu.constraint_name = tc.constraint_name
WHERE constraint_type = 'FOREIGN KEY'
AND tc.table_name= f_table AND kcu.column_name= f_column
INTO constraint_name, reftable, refcolumn;
EXECUTE 'alter table ' || f_table || ' drop constraint ' || constraint_name ||
', ADD CONSTRAINT ' || constraint_name || ' FOREIGN KEY (' || f_column || ') ' ||
' REFERENCES ' || reftable || '(' || refcolumn || ') ' || new_options || ';';
RETURN 'Constraint replaced: ' || constraint_name || ' (' || f_table || '.' || f_column ||
' -> ' || reftable || '.' || refcolumn || '); New options: ' || new_options;
END;
$$ LANGUAGE plpgsql;
Be aware: this function won't copy attributes of initial foreign key. It only takes foreign table name / column name, drops current key and replaces with new one.
Ruby is slower than C++ at a number of easily measurable tasks (e.g., doing code that is heavily dependent on floating point). This is not very surprising, but enough justification for some people to say that “Ruby is Slow” without qualification. They don't count the fact that it is far easier and safer to write Ruby code than C++.
The best fix is to use targeted modules written in another language (e.g., C, C++, Fortran) in your Ruby code. Those can do the heavy lifting and your scripts can focus on higher level coordination issues.
First you have to clone the repository to you local machine
git clone github_url local_directory
Then you can create local folders and files inside your local_directory
, and add them to the repository using:
git add file_path
You can also add everything using:
git add .
Note that Git does not track empty folders. A workaround is to create a file inside the empty folder you want to track. I usually name that file empty
, but it can be whatever name you choose.
Finally, you commit and push back to GitHub:
git commit
git push
For more information on Git, check out the Pro Git book.
Sometimes just setting canvas's tabindex to '1' (or '0') works. But sometimes - it doesn't, for some strange reason.
In my case (ReactJS app, dynamic canvas el creation and mount) I need to call canvasEl.focus() to fix it. Maybe this is somehow related to React (my old app based on KnockoutJS works without '..focus()' )
For VB.NET, you can place the following before your web request:
Const _Tls12 As SslProtocols = DirectCast(&HC00, SslProtocols)
Const Tls12 As SecurityProtocolType = DirectCast(_Tls12, SecurityProtocolType)
ServicePointManager.SecurityProtocol = Tls12
This solved my security issue on .NET 3.5.
For offsprings.
How I managed to add russian language to fpdf on my Linux machine:
1) Go to http://www.fpdf.org/makefont/ and convert your ttf font(for example AerialRegular.ttf) into 2 files using ISO-8859-5 encoding: AerialRegular.php and AerialRegular.z
2) Put these 2 files into fpdf/font directory
3) Use it in your code:
$pdf = new \FPDI();
$pdf->AddFont('ArialMT','','ArialRegular.php');
$pdf->AddPage();
$tplIdx = $pdf->importPage(1);
$pdf->useTemplate($tplIdx, 0, 0, 211, 297); //width and height in mms
$pdf->SetFont('ArialMT','',35);
$pdf->SetTextColor(255,0,0);
$fullName = iconv('UTF-8', 'ISO-8859-5', '???????');
$pdf->SetXY(60, 54);
$pdf->Write(0, $fullName);
In order to avoid a "Division by zero" error we have programmed it like this:
Select Case when divisor=0 then null
Else dividend / divisor
End ,,,
But here is a much nicer way of doing it:
Select dividend / NULLIF(divisor, 0) ...
Now the only problem is to remember the NullIf bit, if I use the "/" key.
New Date(number) returns a date that's number
milliseconds after 1 Jan 1970. Odds are you date format isn't showing hours, minutes, and seconds for you to see that it's just a little bit after 1 Jan 1970.
You need to parse the date according to the correct parsing routing. I don't know what a 1220227200 is, but if it's seconds after 1 JAN 1970, then multiply it to yield milliseconds. If it is not, then convert it in some manner to milliseconds after 1970 (if you want to continue to use java.util.Date).
I just configured min as the following :
spring.h2.console.enabled=true
spring.h2.console.path=/h2-console
# changing the name of my data base for testing
spring.datasource.url= jdbc:h2:mem:mockedDB
spring.datasource.username=sa
spring.datasource.password=sa
# in testing i don`t need to know the port
#Feature that determines what happens when no accessors are found for a type
#(and there are no annotations to indicate it is meant to be serialized).
spring.jackson.serialization.FAIL_ON_EMPTY_BEANS=false`enter code here`
1 byte may hold 1 character. For Example: Refer Ascii values for each character & convert into binary. This is how it works.
value 255 is stored as (11111111) base 2. Visit this link for knowing more about binary conversion. http://acc6.its.brooklyn.cuny.edu/~gurwitz/core5/nav2tool.html
Size of Tiny Int = 1 Byte ( -128 to 127)
Int = 4 Bytes (-2147483648 to 2147483647)
You don't need a third party package to get this information. pypi provides simple JSON feeds for all packages under
https://pypi.org/pypi/{PKG_NAME}/json
Here's some Python code using only the standard library which gets all versions.
import json
import urllib2
from distutils.version import StrictVersion
def versions(package_name):
url = "https://pypi.org/pypi/%s/json" % (package_name,)
data = json.load(urllib2.urlopen(urllib2.Request(url)))
versions = data["releases"].keys()
versions.sort(key=StrictVersion)
return versions
print "\n".join(versions("scikit-image"))
That code prints (as of Feb 23rd, 2015):
0.7.2
0.8.0
0.8.1
0.8.2
0.9.0
0.9.1
0.9.2
0.9.3
0.10.0
0.10.1
Here's one possible method.
function isMouseInBox(e) {
var textbox = document.getElementById('textbox');
// Box position & sizes
var boxX = textbox.offsetLeft;
var boxY = textbox.offsetTop;
var boxWidth = textbox.offsetWidth;
var boxHeight = textbox.offsetHeight;
// Mouse position comes from the 'mousemove' event
var mouseX = e.pageX;
var mouseY = e.pageY;
if(mouseX>=boxX && mouseX<=boxX+boxWidth) {
if(mouseY>=boxY && mouseY<=boxY+boxHeight){
// Mouse is in the box
return true;
}
}
}
document.addEventListener('mousemove', function(e){
isMouseInBox(e);
})
To check for null values you can use is_null() as is demonstrated below.
if (is_null($value)) {
$value = "MY TEXT"; //define to suit
}
This normally works for me:
if ($("#r1").is(":checked")) {}
First check the Visual studio version of the developer PC which can publish the solution(project). as shown is for VS 2013
/p:VisualStudioVersion=12.0
add the above command line to specify what kind of a visual studio version should build the project. As previous answers, this might happen when we are trying to publish only one project, not the whole solution.
So the complete code would be something like this
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe" "C:\Program Files (x86)\Jenkins\workspace\Jenkinssecondsample\MVCSampleJenkins\MVCSampleJenkins.csproj" /T:Build;Package /p:Configuration=DEBUG /p:OutputPath="obj\DEBUG" /p:DeployIisAppPath="Default Web Site/jenkinsdemoapp" /p:VisualStudioVersion=12.0
You need a dict
:
my_dict = {'cheese': 'cake'}
Example code (from the docs):
>>> a = dict(one=1, two=2, three=3)
>>> b = {'one': 1, 'two': 2, 'three': 3}
>>> c = dict(zip(['one', 'two', 'three'], [1, 2, 3]))
>>> d = dict([('two', 2), ('one', 1), ('three', 3)])
>>> e = dict({'three': 3, 'one': 1, 'two': 2})
>>> a == b == c == d == e
True
You can read more about dictionaries here.
For IE 8 there is a simple pure css-based solution:
select:focus {
width: auto;
position: relative;
}
(You need to set the position property, if the selectbox is child of a container with fixed width.)
Unfortunately IE 7 and less do not support the :focus selector.
As of Xcode 3.2.5 and Snow Leopard (Mac OS X 10.6), you can run your code through the Zombies instrument: Run > Run with Performance Tool > Zombies
. That allows you to see particular objects and their retain counts on a timeline.
Try using:
ActionBar ab = getSupportActionBar();
ab.setHomeButtonEnabled(true);
ab.setDisplayUseLogoEnabled(true);
ab.setLogo(R.drawable.ic_launcher);
It was now the third time I googled myself to this SO post as I always forget how to mock an @Value field. Though the accepted answer is correct, I always need some time to get the "setField" call right, so at least for myself I paste an example snippet here:
Production class:
@Value("#{myProps[‘some.default.url']}")
private String defaultUrl;
Test class:
import org.springframework.test.util.ReflectionTestUtils;
ReflectionTestUtils.setField(instanceUnderTest, "defaultUrl", "http://foo");
// Note: Don't use MyClassUnderTest.class, use the instance you are testing itself
// Note: Don't use the referenced string "#{myProps[‘some.default.url']}",
// but simply the FIELDs name ("defaultUrl")
I wrote this script to search for all .mkv files recursively renaming found files to .avi. You can customize it to your neeeds. I've added some other things such as getting file directory, extension, file name from a file path just incase you need to refer to something in the future.
find . -type f -name "*.mkv" | while read fp; do
fd=$(dirname "${fp}");
fn=$(basename "${fp}");
ext="${fn##*.}";
f="${fn%.*}";
new_fp="${fd}/${f}.avi"
mv -v "$fp" "$new_fp"
done;
I just wanted to add this version because this is such a useful thread and I think this is a very simple implementation. I have used this multiple times in various types if multithreaded application:
Task.Factory.StartNew(() =>
{
DoLongRunningWork();
Application.Current.Dispatcher.BeginInvoke(DispatcherPriority.Normal, new Action(() =>
{ txt.Text = "Complete"; }));
});
Since the exact question is "what does enable bitcode do", I'd like to give a few thin technical details I've figured out thus far. Most of this is practically impossible to figure out with 100% certainty until Apple releases the source code for this compiler
First, Apple's bitcode does not appear to be the same thing as LLVM bytecode. At least, I've not been able to figure out any resemblance between them. It appears to have a proprietary header (always starts with "xar!") and probably some link-time reference magic that prevents data duplications. If you write out a hardcoded string, this string will only be put into the data once, rather than twice as would be expected if it was normal LLVM bytecode.
Second, bitcode is not really shipped in the binary archive as a separate architecture as might be expected. It is not shipped in the same way as say x86 and ARM are put into one binary (FAT archive). Instead, they use a special section in the architecture specific MachO binary named "__LLVM" which is shipped with every architecture supported (ie, duplicated). I assume this is a short coming with their compiler system and may be fixed in the future to avoid the duplication.
C code (compiled with clang -fembed-bitcode hi.c -S -emit-llvm
):
#include <stdio.h>
int main() {
printf("hi there!");
return 0;
}
LLVM IR output:
; ModuleID = '/var/folders/rd/sv6v2_f50nzbrn4f64gnd4gh0000gq/T/hi-a8c16c.bc'
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.10.0"
@.str = private unnamed_addr constant [10 x i8] c"hi there!\00", align 1
@llvm.embedded.module = appending constant [1600 x i8] c"\DE\C0\17\0B\00\00\00\00\14\00\00\00$\06\00\00\07\00\00\01BC\C0\DE!\0C\00\00\86\01\00\00\0B\82 \00\02\00\00\00\12\00\00\00\07\81#\91A\C8\04I\06\1029\92\01\84\0C%\05\08\19\1E\04\8Bb\80\10E\02B\92\0BB\84\102\148\08\18I\0A2D$H\0A\90!#\C4R\80\0C\19!r$\07\C8\08\11b\A8\A0\A8@\C6\F0\01\00\00\00Q\18\00\00\C7\00\00\00\1Bp$\F8\FF\FF\FF\FF\01\90\00\0D\08\03\82\1D\CAa\1E\E6\A1\0D\E0A\1E\CAa\1C\D2a\1E\CA\A1\0D\CC\01\1E\DA!\1C\C8\010\87p`\87y(\07\80p\87wh\03s\90\87ph\87rh\03xx\87tp\07z(\07yh\83r`\87th\07\80\1E\E4\A1\1E\CA\01\18\DC\E1\1D\DA\C0\1C\E4!\1C\DA\A1\1C\DA\00\1E\DE!\1D\DC\81\1E\CAA\1E\DA\A0\1C\D8!\1D\DA\A1\0D\DC\E1\1D\DC\A1\0D\D8\A1\1C\C2\C1\1C\00\C2\1D\DE\A1\0D\D2\C1\1D\CCa\1E\DA\C0\1C\E0\A1\0D\DA!\1C\E8\01\1D\00s\08\07v\98\87r\00\08wx\876p\87pp\87yh\03s\80\876h\87p\A0\07t\00\CC!\1C\D8a\1E\CA\01 \E6\81\1E\C2a\1C\D6\A1\0D\E0A\1E\DE\81\1E\CAa\1C\E8\E1\1D\E4\A1\0D\C4\A1\1E\CC\C1\1C\CAA\1E\DA`\1E\D2A\1F\CA\01\C0\03\80\A0\87p\90\87s(\07zh\83q\80\87z\00\C6\E1\1D\E4\A1\1C\E4\00 \E8!\1C\E4\E1\1C\CA\81\1E\DA\C0\1C\CA!\1C\E8\A1\1E\E4\A1\1C\E6\01X\83y\98\87y(\879`\835\18\07|\88\03;`\835\98\87y(\076X\83y\98\87r\90\036X\83y\98\87r\98\03\80\A8\07w\98\87p0\87rh\03s\80\876h\87p\A0\07t\00\CC!\1C\D8a\1E\CA\01 \EAa\1E\CA\A1\0D\E6\E1\1D\CC\81\1E\DA\C0\1C\D8\E1\1D\C2\81\1E\00s\08\07v\98\87r\006\C8\88\F0\FF\FF\FF\FF\03\C1\0E\E50\0F\F3\D0\06\F0 \0F\E50\0E\E90\0F\E5\D0\06\E6\00\0F\ED\10\0E\E4\00\98C8\B0\C3<\94\03@\B8\C3;\B4\819\C8C8\B4C9\B4\01<\BCC:\B8\03=\94\83<\B4A9\B0C:\B4\03@\0F\F2P\0F\E5\00\0C\EE\F0\0Em`\0E\F2\10\0E\EDP\0Em\00\0F\EF\90\0E\EE@\0F\E5 \0FmP\0E\EC\90\0E\ED\D0\06\EE\F0\0E\EE\D0\06\ECP\0E\E1`\0E\00\E1\0E\EF\D0\06\E9\E0\0E\E60\0Fm`\0E\F0\D0\06\ED\10\0E\F4\80\0E\809\84\03;\CCC9\00\84;\BCC\1B\B8C8\B8\C3<\B4\819\C0C\1B\B4C8\D0\03:\00\E6\10\0E\EC0\0F\E5\00\10\F3@\0F\E10\0E\EB\D0\06\F0 \0F\EF@\0F\E50\0E\F4\F0\0E\F2\D0\06\E2P\0F\E6`\0E\E5 \0Fm0\0F\E9\A0\0F\E5\00\E0\01@\D0C8\C8\C39\94\03=\B4\C18\C0C=\00\E3\F0\0E\F2P\0Er\00\10\F4\10\0E\F2p\0E\E5@\0Fm`\0E\E5\10\0E\F4P\0F\F2P\0E\F3\00\AC\C1<\CC\C3<\94\C3\1C\B0\C1\1A\8C\03>\C4\81\1D\B0\C1\1A\CC\C3<\94\03\1B\AC\C1<\CCC9\C8\01\1B\AC\C1<\CCC9\CC\01@\D4\83;\CCC8\98C9\B4\819\C0C\1B\B4C8\D0\03:\00\E6\10\0E\EC0\0F\E5\00\10\F50\0F\E5\D0\06\F3\F0\0E\E6@\0Fm`\0E\EC\F0\0E\E1@\0F\809\84\03;\CCC9\00\00I\18\00\00\02\00\00\00\13\82`B \00\00\00\89 \00\00\0D\00\00\002\22\08\09 d\85\04\13\22\A4\84\04\13\22\E3\84\A1\90\14\12L\88\8C\0B\84\84L\100s\04H*\00\C5\1C\01\18\94`\88\08\AA0F7\10@3\02\00\134|\C0\03;\F8\05;\A0\836\08\07x\80\07v(\876h\87p\18\87w\98\07|\88\038p\838\80\037\80\83\0DeP\0Em\D0\0Ez\F0\0Em\90\0Ev@\07z`\07t\D0\06\E6\80\07p\A0\07q \07x\D0\06\EE\80\07z\10\07v\A0\07s \07z`\07t\D0\06\B3\10\07r\80\07:\0FDH #EB\80\1D\8C\10\18I\00\00@\00\00\C0\10\A7\00\00 \00\00\00\00\00\00\00\868\08\10\00\02\00\00\00\00\00\00\90\05\02\00\00\08\00\00\002\1E\98\0C\19\11L\90\8C\09&G\C6\04C\9A\22(\01\0AM\D0i\10\1D]\96\97C\00\00\00y\18\00\00\1C\00\00\00\1A\03L\90F\02\134A\18\08&PIC Level\13\84a\D80\04\C2\C05\08\82\83c+\03ab\B2j\02\B1+\93\9BK{s\03\B9q\81q\81\01A\19c\0Bs;k\B9\81\81q\81q\A9\99q\99I\D9\10\14\8D\D8\D8\EC\DA\5C\DA\DE\C8\EA\D8\CA\5C\CC\D8\C2\CE\E6\A6\04C\1566\BB6\974\B227\BA)A\01\00y\18\00\002\00\00\003\08\80\1C\C4\E1\1Cf\14\01=\88C8\84\C3\8CB\80\07yx\07s\98q\0C\E6\00\0F\ED\10\0E\F4\80\0E3\0CB\1E\C2\C1\1D\CE\A1\1Cf0\05=\88C8\84\83\1B\CC\03=\C8C=\8C\03=\CCx\8Ctp\07{\08\07yH\87pp\07zp\03vx\87p \87\19\CC\11\0E\EC\90\0E\E10\0Fn0\0F\E3\F0\0E\F0P\0E3\10\C4\1D\DE!\1C\D8!\1D\C2a\1Ef0\89;\BC\83;\D0C9\B4\03<\BC\83<\84\03;\CC\F0\14v`\07{h\077h\87rh\077\80\87p\90\87p`\07v(\07v\F8\05vx\87w\80\87_\08\87q\18\87r\98\87y\98\81,\EE\F0\0E\EE\E0\0E\F5\C0\0E\EC\00q \00\00\05\00\00\00&`<\11\D2L\85\05\10\0C\804\06@\F8\D2\14\01\00\00a \00\00\0B\00\00\00\13\04A,\10\00\00\00\03\00\00\004#\00dC\19\020\18\83\01\003\11\CA@\0C\83\11\C1\00\00#\06\04\00\1CB\12\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00", section "__LLVM,__bitcode"
@llvm.cmdline = appending constant [67 x i8] c"-triple\00x86_64-apple-macosx10.10.0\00-emit-llvm\00-disable-llvm-optzns\00", section "__LLVM,__cmdline"
; Function Attrs: nounwind ssp uwtable
define i32 @main() #0 {
%1 = alloca i32, align 4
store i32 0, i32* %1
%2 = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([10 x i8]* @.str, i32 0, i32 0))
ret i32 0
}
declare i32 @printf(i8*, ...) #1
attributes #0 = { nounwind ssp uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="core2" "target-features"="+ssse3,+cx16,+sse,+sse2,+sse3" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="core2" "target-features"="+ssse3,+cx16,+sse,+sse2,+sse3" "unsafe-fp-math"="false" "use-soft-float"="false" }
!llvm.module.flags = !{!0}
!llvm.ident = !{!1}
!0 = !{i32 1, !"PIC Level", i32 2}
!1 = !{!"Apple LLVM version 7.0.0 (clang-700.0.53.3)"}
The data array that is in the IR also changes depending on the optimization and other code generation settings of clang. It's completely unknown to me what format or anything that this is in.
EDIT:
Following the hint on Twitter, I decided to revisit this and to confirm it. I followed this blog post and used his bitcode extractor tool to get the Apple Archive binary out of the MachO executable. And after extracting the Apple Archive with the xar utility, I got this (converted to text with llvm-dis of course)
; ModuleID = '1'
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.10.0"
@.str = private unnamed_addr constant [10 x i8] c"hi there!\00", align 1
; Function Attrs: nounwind ssp uwtable
define i32 @main() #0 {
%1 = alloca i32, align 4
store i32 0, i32* %1
%2 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str, i32 0, i32 0))
ret i32 0
}
declare i32 @printf(i8*, ...) #1
attributes #0 = { nounwind ssp uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="core2" "target-features"="+ssse3,+cx16,+sse,+sse2,+sse3" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="core2" "target-features"="+ssse3,+cx16,+sse,+sse2,+sse3" "unsafe-fp-math"="false" "use-soft-float"="false" }
!llvm.module.flags = !{!0}
!llvm.ident = !{!1}
!0 = !{i32 1, !"PIC Level", i32 2}
!1 = !{!"Apple LLVM version 7.0.0 (clang-700.1.76)"}
The only notable difference really between the non-bitcode IR and the bitcode IR is that filenames have been stripped to just 1, 2, etc for each architecture.
I also confirmed that the bitcode embedded in a binary is generated after optimizations. If you compile with -O3 and extract out the bitcode, it'll be different than if you compile with -O0.
And just to get extra credit, I also confirmed that Apple does not ship bitcode to devices when you download an iOS 9 app. They include a number of other strange sections that I don't recognized like __LINKEDIT, but they do not include __LLVM.__bundle, and thus do not appear to include bitcode in the final binary that runs on a device. Oddly enough, Apple still ships fat binaries with separate 32/64bit code to iOS 8 devices though.
Best solution for me, detecting if a device is mobile or not:
@media (pointer:none), (pointer:coarse) {
}
TL;DR: Use StandardError
instead for general exception catching. When the original exception is re-raised (e.g. when rescuing to log the exception only), rescuing Exception
is probably okay.
Exception
is the root of Ruby's exception hierarchy, so when you rescue Exception
you rescue from everything, including subclasses such as SyntaxError
, LoadError
, and Interrupt
.
Rescuing Interrupt
prevents the user from using CTRLC to exit the program.
Rescuing SignalException
prevents the program from responding correctly to signals. It will be unkillable except by kill -9
.
Rescuing SyntaxError
means that eval
s that fail will do so silently.
All of these can be shown by running this program, and trying to CTRLC or kill
it:
loop do
begin
sleep 1
eval "djsakru3924r9eiuorwju3498 += 5u84fior8u8t4ruyf8ihiure"
rescue Exception
puts "I refuse to fail or be stopped!"
end
end
Rescuing from Exception
isn't even the default. Doing
begin
# iceberg!
rescue
# lifeboats
end
does not rescue from Exception
, it rescues from StandardError
. You should generally specify something more specific than the default StandardError
, but rescuing from Exception
broadens the scope rather than narrowing it, and can have catastrophic results and make bug-hunting extremely difficult.
If you have a situation where you do want to rescue from StandardError
and you need a variable with the exception, you can use this form:
begin
# iceberg!
rescue => e
# lifeboats
end
which is equivalent to:
begin
# iceberg!
rescue StandardError => e
# lifeboats
end
One of the few common cases where it’s sane to rescue from Exception
is for logging/reporting purposes, in which case you should immediately re-raise the exception:
begin
# iceberg?
rescue Exception => e
# do some logging
raise # not enough lifeboats ;)
end
Strangely, for me it's SubmitChanges as opposed to SaveChanges:
foreach (var item in w)
{
if (Convert.ToInt32(e.CommandArgument) == item.ID)
{
item.Sort = 1;
}
else
{
item.Sort = null;
}
db.SubmitChanges();
}
This script works only on the path names. It does not require any of the files to exist. If the paths passed are not absolute, the behavior is a bit unusual, but it should work as expected if both paths are relative.
I only tested it on OS X, so it might not be portable.
#!/bin/bash
set -e
declare SCRIPT_NAME="$(basename $0)"
function usage {
echo "Usage: $SCRIPT_NAME <base path> <target file>"
echo " Outputs <target file> relative to <base path>"
exit 1
}
if [ $# -lt 2 ]; then usage; fi
declare base=$1
declare target=$2
declare -a base_part=()
declare -a target_part=()
#Split path elements & canonicalize
OFS="$IFS"; IFS='/'
bpl=0;
for bp in $base; do
case "$bp" in
".");;
"..") let "bpl=$bpl-1" ;;
*) base_part[${bpl}]="$bp" ; let "bpl=$bpl+1";;
esac
done
tpl=0;
for tp in $target; do
case "$tp" in
".");;
"..") let "tpl=$tpl-1" ;;
*) target_part[${tpl}]="$tp" ; let "tpl=$tpl+1";;
esac
done
IFS="$OFS"
#Count common prefix
common=0
for (( i=0 ; i<$bpl ; i++ )); do
if [ "${base_part[$i]}" = "${target_part[$common]}" ] ; then
let "common=$common+1"
else
break
fi
done
#Compute number of directories up
let "updir=$bpl-$common" || updir=0 #if the expression is zero, 'let' fails
#trivial case (after canonical decomposition)
if [ $updir -eq 0 ]; then
echo .
exit
fi
#Print updirs
for (( i=0 ; i<$updir ; i++ )); do
echo -n ../
done
#Print remaining path
for (( i=$common ; i<$tpl ; i++ )); do
if [ $i -ne $common ]; then
echo -n "/"
fi
if [ "" != "${target_part[$i]}" ] ; then
echo -n "${target_part[$i]}"
fi
done
#One last newline
echo
You are trying to pass pointers (which you do not delete, thus leaking memory) where references are needed. You do not really need pointers here:
Complex firstComplexNumber(81, 93);
Complex secondComplexNumber(31, 19);
cout << "Numarul complex este: " << firstComplexNumber << endl;
// ^^^^^^^^^^^^^^^^^^ No need to dereference now
// ...
Complex::distanta(firstComplexNumber, secondComplexNumber);
There are already several answers however none of them mention the best (and easiest) way to do this, which is using spawn
and the { stdio: 'inherit' }
option. It seems to produce the most accurate output, for example when displaying the progress information from a git clone
.
Simply do this:
var spawn = require('child_process').spawn;
spawn('coffee', ['-cw', 'my_file.coffee'], { stdio: 'inherit' });
Credit to @MorganTouvereyQuilling for pointing this out in this comment.
just say myElement.classList="new-class"
unless you need to maintain other existing classes in which case you can use the classList.add, .remove
methods.
var doc = document;_x000D_
var divOne = doc.getElementById("one");_x000D_
var goButton = doc.getElementById("go");_x000D_
_x000D_
goButton.addEventListener("click", function() {_x000D_
divOne.classList="blue";_x000D_
});
_x000D_
div{_x000D_
min-height:48px;_x000D_
min-width:48px;_x000D_
}_x000D_
.bordered{_x000D_
border: 1px solid black;_x000D_
}_x000D_
.green{_x000D_
background:green;_x000D_
}_x000D_
.blue{_x000D_
background: blue;_x000D_
}
_x000D_
<button id="go">Change Class</button>_x000D_
_x000D_
<div id="one" class="bordered green">_x000D_
_x000D_
</div>
_x000D_
Use microsoft's tool for remote commands executions: PsExec
If there isn't your bat-file on remote host, copy it first. For example:
copy D:\apache-tomcat-6.0.20\apache-tomcat-7.0.30\bin\shutdown.bat \\RemoteServerNameOrIP\d$\apache-tomcat-6.0.20\apache-tomcat-7.0.30\bin\
And then execute:
psexec \\RemoteServerNameOrIP d:\apache-tomcat-6.0.20\apache-tomcat-7.0.30\bin\shutdown.bat
Note: filepath for psexec is path to file on remote server, not your local.
Typescript fails in your case because it expects all the fields to be present. Use Record and Partial utility types to solve it.
Record<string, Partial<IPerson>>
interface IPerson {
firstName: string;
lastName: string;
}
var persons: Record<string, Partial<IPerson>> = {
"p1": { firstName: "F1", lastName: "L1" },
"p2": { firstName: "F2" }
};
Explanation.
Alternate.
If you wish to make last name optional you can append a ? Typescript will know that it's optional.
lastName?: string;
https://www.typescriptlang.org/docs/handbook/utility-types.html
I am using VS 2017 Enterprise, you can find an option to install the class diagram extension using he Quick Launch in VS.
@Echo off
Set ServiceName=wampapache64
SC queryex "%ServiceName%"|Find "STATE"|Find /v "RUNNING">Nul&&(
echo %ServiceName% not running
echo
Net start "%ServiceName%"
SC queryex "%ServiceName%"|Find "STATE"|Find /v "RUNNING">Nul&&(
Echo "%ServiceName%" wont start
)
echo "%ServiceName%" started
)||(
echo "%ServiceName%" was working and stopping
echo
Net stop "%ServiceName%"
)
pause
This is what did it for me in .htaccess (it could be that you had a directive making all files load as MIME type text/html):
In .htaccess
AddType text/css .css
An easy way to upgrade all Perl packages (CPAN modules) is the following way:
cpan upgrade /(.*)/
cpan will recognize the regular expression like this and will update/upgrade all packages installed.
Alternative solution is to use a hosting.json
in the root of the project.
{
"urls": "http://localhost:60000"
}
And then in Program.cs
public static void Main(string[] args)
{
var config = new ConfigurationBuilder()
.SetBasePath(Directory.GetCurrentDirectory())
.AddJsonFile("hosting.json", true)
.Build();
var host = new WebHostBuilder()
.UseKestrel(options => options.AddServerHeader = false)
.UseConfiguration(config)
.UseContentRoot(Directory.GetCurrentDirectory())
.UseIISIntegration()
.UseStartup<Startup>()
.Build();
host.Run();
}
Found another solution for the same. It will be more helpful.
START C:\"Program Files (x86)"\Test\"Test Automation"\finger.exe ConfigFile="C:\Users\PCName\Desktop\Automation\Documents\Validation_ZoneWise_Default.finger.Config"
finger.exe is a parent program that is calling config solution. Note: if your path folder name consists of spaces, then do not forget to add "".
If you want to connect to SQL server remotly you need to use a software - like Sql Server Management studio.
The computers doesn't need to be on the same network - but they must be able to connect each other using a communication protocol like tcp/ip, and the server must be set up to support incoming connection of the type you choose.
if you want to connect to another computer (to browse files ?) you use other tools, and not sql server (you can map a drive and access it through there ect...)
To Enable SQL connection using tcp/ip read this article:
For Sql Express: express For Sql 2008: 2008
Make sure you enable access through the machine firewall as well.
You might need to install either SSMS or Toad on the machine your using to connect to the server. both you can download from their's company web site.
$('elements-to-match').click(function(){
alert("The id is "+ this.id );
});
no need to wrap it in a jquery object
Here is an option with a table variable:
DECLARE @MyVar TABLE(Val DATETIME)
DECLARE @I INT, @StartDate DATETIME
SET @I = 1
SET @StartDate = '20100101'
WHILE @I <= 5
BEGIN
INSERT INTO @MyVar(Val)
VALUES(@StartDate)
SET @StartDate = DATEADD(DAY,1,@StartDate)
SET @I = @I + 1
END
SELECT *
FROM @MyVar
You can do the same with a temp table:
CREATE TABLE #MyVar(Val DATETIME)
DECLARE @I INT, @StartDate DATETIME
SET @I = 1
SET @StartDate = '20100101'
WHILE @I <= 5
BEGIN
INSERT INTO #MyVar(Val)
VALUES(@StartDate)
SET @StartDate = DATEADD(DAY,1,@StartDate)
SET @I = @I + 1
END
SELECT *
FROM #MyVar
You should tell us what is your main goal, as was said by @JohnFx, this could probably be done another (more efficient) way.
Use the @RequestParam to pass a parameter to the controller handler method.
In the jsp your form should have an input field with name = "id"
like the following:
<input type="text" name="id" />
<input type="submit" />
Then in your controller, your handler method should be like the following:
@RequestMapping("listNotes")
public String listNotes(@RequestParam("id") int id) {
Person person = personService.getCurrentlyAuthenticatedUser();
model.addAttribute("person", new Person());
model.addAttribute("listPersons", this.personService.listPersons());
model.addAttribute("listNotes", this.notesService.listNotesBySectionId(id, person));
return "note";
}
Please also refer to these answers and tutorial:
Something like this should work.
ssh [email protected] 'find -type f -name "*.pdf" -exec cp {} ./pdfsfolder \;'
To add to Johan Pelgrim's answer
context.getResources().getConfiguration().locale
Locale.getDefault()
are equivalent because android.text.format.DateFormat
class uses both interchangeably, e.g.
private static String zeroPad(int inValue, int inMinDigits) {
return String.format(Locale.getDefault(), "%0" + inMinDigits + "d", inValue);
}
and
public static boolean is24HourFormat(Context context) {
String value = Settings.System.getString(context.getContentResolver(),
Settings.System.TIME_12_24);
if (value == null) {
Locale locale = context.getResources().getConfiguration().locale;
// ... snip the rest ...
}
Another way to do this, for integer types anyway, is to define constants as enums in the class:
class test
{
public:
enum { N = 10 };
};
This is also found in the UINavigationController class documentation:
navigationItem.hidesBackButton = true
It's not possible with CSS3. There is a proposed CSS4 selector, $
, to do just that, which could look like this (Selecting the li
element):
ul $li ul.sub { ... }
See the list of CSS4 Selectors here.
As an alternative, with jQuery, a one-liner you could make use of would be this:
$('ul li:has(ul.sub)').addClass('has_sub');
You could then go ahead and style the li.has_sub
in your CSS.
The Command did not work for me but the following did
hdfs dfsadmin -safemode leave
I used the hdfs
command instead of the hadoop
command.
Check out http://ask.gopivotal.com/hc/en-us/articles/200933026-HDFS-goes-into-readonly-mode-and-errors-out-with-Name-node-is-in-safe-mode- link too
sql = "INSERT INTO MyTable (Name) VALUES (@Name);" +
"SELECT CAST(scope_identity() AS int)";
SqlCommand cmd = new SqlCommand(sql, conn);
int newId = (int)cmd.ExecuteScalar();
here is java O(nlogn) implementation
import java.util.Scanner;
public class LongestIncreasingSeq {
private static int binarySearch(int table[],int a,int len){
int end = len-1;
int beg = 0;
int mid = 0;
int result = -1;
while(beg <= end){
mid = (end + beg) / 2;
if(table[mid] < a){
beg=mid+1;
result = mid;
}else if(table[mid] == a){
return len-1;
}else{
end = mid-1;
}
}
return result;
}
public static void main(String[] args) {
// int[] t = {1, 2, 5,9,16};
// System.out.println(binarySearch(t , 9, 5));
Scanner in = new Scanner(System.in);
int size = in.nextInt();//4;
int A[] = new int[size];
int table[] = new int[A.length];
int k = 0;
while(k<size){
A[k++] = in.nextInt();
if(k<size-1)
in.nextLine();
}
table[0] = A[0];
int len = 1;
for (int i = 1; i < A.length; i++) {
if(table[0] > A[i]){
table[0] = A[i];
}else if(table[len-1]<A[i]){
table[len++]=A[i];
}else{
table[binarySearch(table, A[i],len)+1] = A[i];
}
}
System.out.println(len);
}
}
//TreeSet can be used
No they do not exist in C# 3.0 and will not be added in 4.0. It's on the list of feature wants for C# so it may be added at a future date.
At this point the best you can do is GetXXX style extension methods.
You can create a Blob
from your base64 data, and then read it asDataURL
:
var img_b64 = canvas.toDataURL('image/png');
var png = img_b64.split(',')[1];
var the_file = new Blob([window.atob(png)], {type: 'image/png', encoding: 'utf-8'});
var fr = new FileReader();
fr.onload = function ( oFREvent ) {
var v = oFREvent.target.result.split(',')[1]; // encoding is messed up here, so we fix it
v = atob(v);
var good_b64 = btoa(decodeURIComponent(escape(v)));
document.getElementById("uploadPreview").src = "data:image/png;base64," + good_b64;
};
fr.readAsDataURL(the_file);
Full example (includes junk code and console log): http://jsfiddle.net/tTYb8/
Alternatively, you can use .readAsText
, it works fine, and its more elegant.. but for some reason text does not sound right ;)
fr.onload = function ( oFREvent ) {
document.getElementById("uploadPreview").src = "data:image/png;base64,"
+ btoa(oFREvent.target.result);
};
fr.readAsText(the_file, "utf-8"); // its important to specify encoding here
Full example: http://jsfiddle.net/tTYb8/3/
I had the exact same issue. If you are using a relative path os.path.dirname(path) will only return the relative path. os.path.realpath does the trick:
>>> import os
>>> f = open('file.txt')
>>> os.path.realpath(f.name)
I solve such queries using this pattern:
SELECT *
FROM t
WHERE t.field=(
SELECT MAX(t.field)
FROM t AS t0
WHERE t.group_column1=t0.group_column1
AND t.group_column2=t0.group_column2 ...)
That is it will select records where the value of a field is at its max value. To apply it to your query I used the common table expression so that I don't have to repeat the JOIN twice:
WITH site_history AS (
SELECT sites.siteName, sites.siteIP, history.date
FROM sites
JOIN history USING (siteName)
)
SELECT *
FROM site_history h
WHERE date=(
SELECT MAX(date)
FROM site_history h0
WHERE h.siteName=h0.siteName)
ORDER BY siteName
It's important to note that it works only if the field we're calculating the maximum for is unique. In your example the date
field should be unique for each siteName
, that is if the IP can't be changed multiple times per millisecond. In my experience this is commonly the case otherwise you don't know which record is the newest anyway. If the history
table has an unique index for (site, date)
, this query is also very fast, index range scan on the history
table scanning just the first item can be used.
The usual error is one tries to put Content-Type: {multipart/form-data}
into the header of the post request. That will fail, it is best to let Postman do it for you. For example:
This one liner replaces all the ^M characters:
dos2unix <file-name>
You can call this from inside Perl or directly on your Unix prompt.
Similar to @Matthew_Plourde using gsub
However, using a pattern that will trim to zero characters i.e. return "" if the original string is shorter than the number of characters to cut:
cs <- c("foo_bar","bar_foo","apple","beer","so","a")
gsub('.{0,3}$', '', cs)
# [1] "foo_" "bar_" "ap" "b" "" ""
Difference is, {0,3}
quantifier indicates 0 to 3 matches, whereas {3}
requires exactly 3 matches otherwise no match is found in which case gsub
returns the original, unmodified string.
N.B. using {,3}
would be equivalent to {0,3}
, I simply prefer the latter notation.
See here for more information on regex quantifiers: https://www.regular-expressions.info/refrepeat.html
Start mysql server by command prompt
C:> "C:\Program Files\MySQL\MySQL Server 5.5\bin\mysqld" --console
Or alternative reach up to bin then
mysqld --console
It will start your server.
If you have mysql command line client available
click on it
it show enter your password :
Please enter your password.
Then you can access it.
You need make your Contact classes implement Comparable, and then implement the compareTo(Contact)
method. That way, the Collections.sort will be able to sort them for you. Per the page I linked to, compareTo 'returns a negative integer, zero, or a positive integer as this object is less than, equal to, or greater than the specified object.'
For example, if you wanted to sort by name (A to Z), your class would look like this:
public class Contact implements Comparable<Contact> {
private String name;
// all the other attributes and methods
public compareTo(Contact other) {
return this.name.compareTo(other.name);
}
}
Don't hardcode ip of containers in nginx config, docker link adds the hostname of the linked machine to the hosts file of the container and you should be able to ping by hostname.
EDIT: Docker 1.9 Networking no longer requires you to link containers, when multiple containers are connected to the same network, their hosts file will be updated so they can reach each other by hostname.
Every time a docker container spins up from an image (even stop/start-ing an existing container) the containers get new ip's assigned by the docker host. These ip's are not in the same subnet as your actual machines.
see docker linking docs (this is what compose uses in the background)
but more clearly explained in the docker-compose
docs on links & expose
links
links: - db - db:database - redis
An entry with the alias' name will be created in /etc/hosts inside containers for this service, e.g:
172.17.2.186 db 172.17.2.186 database 172.17.2.187 redis
expose
Expose ports without publishing them to the host machine - they'll only be accessible to linked services. Only the internal port can be specified.
and if you set up your project to get the ports + other credentials through environment variables, links automatically set a bunch of system variables:
To see what environment variables are available to a service, run
docker-compose run SERVICE env
.
name_PORT
Full URL, e.g. DB_PORT=tcp://172.17.0.5:5432
name_PORT_num_protocol
Full URL, e.g.
DB_PORT_5432_TCP=tcp://172.17.0.5:5432
name_PORT_num_protocol_ADDR
Container's IP address, e.g.
DB_PORT_5432_TCP_ADDR=172.17.0.5
name_PORT_num_protocol_PORT
Exposed port number, e.g.
DB_PORT_5432_TCP_PORT=5432
name_PORT_num_protocol_PROTO
Protocol (tcp or udp), e.g.
DB_PORT_5432_TCP_PROTO=tcp
name_NAME
Fully qualified container name, e.g.
DB_1_NAME=/myapp_web_1/myapp_db_1
Add hide
class to alert-message
. Then put the following code after your jQuery script import:
$(document).ready( function(){
$(".alert-message").animate({ 'height':'toggle','opacity':'toggle'});
window.setTimeout( function(){
$(".alert-message").slideUp();
}, 2500);
});
If you want handle multiple messages, this code will hide them in ascending order:
$(document).ready( function(){
var hide_delay = 2500; // starting timeout before first message is hidden
var hide_next = 800; // time in mS to wait before hiding next message
$(".alert-message").slideDown().each( function(index,el) {
window.setTimeout( function(){
$(el).slideUp(); // hide the message
}, hide_delay + hide_next*index);
});
});
Generally speaking, a software product isn't your "property already", as you said in the comment. Most of the times (I won't be irresponsible to say anything in open), it's licensed to you. A license to use some thing is not the same thing as owning (property rights) that very same thing.
That's because there are authorship, copyright, intellectual property rights applicable to it. I don't know how things work in United States (or in your country), but it's generally accepted that the work of a mind, a creative work, must not be changed in its nature as such to make the expression of art to be different than that expression that the author intended. That applies for example, in some cases, to architectural work (in most countries, you can't change the appearance of a building to "desfigure" the work of art of the architect, without his prior consent). Exceptions are made, obviously, when the author expressly authorizes such changes (e.g., Creative Commons licenses, open source licenses etc.).
Anyway, that's why you see in most EULAs the typical sentence: "this software is licensed, not sold". That's the purpose and reason why.
Now that you understand the reasons why you can't wander around changing other people's art, let me be technical.
There are possible ways to decompile Java programs. You can use dex2jar
, it provides a somewhat good start for you to start looking for things and changes. And perhaps rebuild the code by mounting back the pieces together. Good luck, as most people obfuscate their codes to make that harder.
However, let me say that it's still forbidden to change programs, as I said above. And it's extremely unethical. It makes me sad that people do that with no scruples (not saying it's your case, just warning you). It shouldn't need people to be at the other side to understand that. Or maybe that's just me, who lives in a country where piracy is rampant.
The tools are always out there. But the conscience, unfortunately, not always.
edit: in case it isn't clear enough already, I do NOT approve the use of these programs. I use them myself to check how hard my own applications are to be reverse engineered. But I also think that explaning is always better than denial (better be here).
I also had problem understanding next() , but this helped
var app = require("express")();
app.get("/", function(httpRequest, httpResponse, next){
httpResponse.write("Hello");
next(); //remove this and see what happens
});
app.get("/", function(httpRequest, httpResponse, next){
httpResponse.write(" World !!!");
httpResponse.end();
});
app.listen(8080);
Here is how I got it going specifically for the admob sdk jar file:
jar
file into the libs folder.jar
file and select Add Library
now the jar file is a library lets add it to the compile pathbuild.gradle
file (note there are two build.gradle
files at least, don't use the root one use the one in your project scope).Find the dependencies section (for me i was trying to the admob -GoogleAdMobAdsSdk jar file) e.g.
dependencies {
compile files('libs/android-support-v4.jar','libs/GoogleAdMobAdsSdk-6.3.1.jar')
}
Last go into settings.gradle
and ensure it looks something like this:
include ':yourproject', ':yourproject:libs:GoogleAdMobAdsSdk-6.3.1'
You can use process. If you want to run it forever use while (like networking) in you function:
from multiprocessing import Process
def foo():
while 1:
# Do something
p = Process(target = foo)
p.start()
if you just want to run it one time, do like that:
from multiprocessing import Process
def foo():
# Do something
p = Process(target = foo)
p.start()
p.join()
I use this form for just this sort of thing:
gci . hosts -r | ? {!$_.PSIsContainer}
.
maps to positional parameter Path
and "hosts" maps to positional parameter Filter
. I highly recommend using Filter
over Include
if the provider supports filtering (and the filesystem provider does). It is a good bit faster than Include
.
Okay, here are the explanations.
e.keyCode - used to get the number that represents the key on the keyboard
e.charCode - a number that represents the unicode character of the key on keyboard
e.which - (jQuery specific) is a property introduced in jQuery (DO Not use in plain javascript)
Below is the code snippet to get the keyCode and charCode
<script>
// get key code
function getKey(event) {
event = event || window.event;
var keyCode = event.which || event.keyCode;
alert(keyCode);
}
// get char code
function getChar(event) {
event = event || window.event;
var keyCode = event.which || event.keyCode;
var typedChar = String.fromCharCode(keyCode);
alert(typedChar);
}
</script>
Live example of Getting keyCode and charCode in JavaScript.
I have expanded the solution and combined it with another that I found to replace/update/remove the querystring parameters based on the users input and taking the urls anchor into consideration.
Not supplying a value will remove the parameter, supplying one will add/update the parameter. If no URL is supplied, it will be grabbed from window.location
function UpdateQueryString(key, value, url) {
if (!url) url = window.location.href;
var re = new RegExp("([?&])" + key + "=.*?(&|#|$)(.*)", "gi"),
hash;
if (re.test(url)) {
if (typeof value !== 'undefined' && value !== null) {
return url.replace(re, '$1' + key + "=" + value + '$2$3');
}
else {
hash = url.split('#');
url = hash[0].replace(re, '$1$3').replace(/(&|\?)$/, '');
if (typeof hash[1] !== 'undefined' && hash[1] !== null) {
url += '#' + hash[1];
}
return url;
}
}
else {
if (typeof value !== 'undefined' && value !== null) {
var separator = url.indexOf('?') !== -1 ? '&' : '?';
hash = url.split('#');
url = hash[0] + separator + key + '=' + value;
if (typeof hash[1] !== 'undefined' && hash[1] !== null) {
url += '#' + hash[1];
}
return url;
}
else {
return url;
}
}
}
Update
There was a bug when removing the first parameter in the querystring, I have reworked the regex and test to include a fix.
Second Update
As suggested by @JarónBarends - Tweak value check to check against undefined and null to allow setting 0 values
Third Update
There was a bug where removing a querystring variable directly before a hashtag would lose the hashtag symbol which has been fixed
Fourth Update
Thanks @rooby for pointing out a regex optimization in the first RegExp object. Set initial regex to ([?&]) due to issue with using (\?|&) found by @YonatanKarni
Fifth Update
Removing declaring hash var in if/else statement
I found w3schools.com howto, their try me page is at the following.
https://www.w3schools.com/howto/tryit.asp?filename=tryhow_js_trigger_button_enter
This worked in my regular browser but did not work in my php app which uses the built in php browser.
After toying a bit I came up with the following pure JavaScript alternative that works for my situation and should work in every other situation:
function checkForEnterKey(){
if (event.keyCode === 13) {
event.preventDefault();
document.getElementById("myBtn").click();
}
}
function buttonClickEvent()
{
alert('The button has been clicked!');
}
HTML Press the enter key inside the textbox to activate the button.
<br />
<input id="myInput" onkeyup="checkForEnterKey(this.value)">
<br />
<button id="myBtn" onclick="buttonClickEvent()">Button</button>
If it is a game(may be app also) and you have some static libraries like cocos2d or other third party library ... then you just have to select *ONLY THE* static library (NOT THE APP) and in its build settings under Deployment , set Skip Install flag to YES
and Archive it dats it...!!
Make sure you have the projects targeting the same framework version. Most of the times the reason would be that current project ( where you are adding reference of another project ) points to a different .net framework version than the rest ones.
Given input={"a":"x", "b":"y", "c":"x"}
...
output={"x":"a","y":"b"}
):input = {_x000D_
"a": "x",_x000D_
"b": "y",_x000D_
"c": "x"_x000D_
}_x000D_
output = Object.keys(input).reduceRight(function(accum, key, i) {_x000D_
accum[input[key]] = key;_x000D_
return accum;_x000D_
}, {})_x000D_
console.log(output)
_x000D_
output={"x":"c","y":"b"}
):input = {_x000D_
"a": "x",_x000D_
"b": "y",_x000D_
"c": "x"_x000D_
}_x000D_
output = Object.keys(input).reduce(function(accum, key, i) {_x000D_
accum[input[key]] = key;_x000D_
return accum;_x000D_
}, {})_x000D_
console.log(output)
_x000D_
output={"x":["c","a"],"y":["b"]}
):input = {_x000D_
"a": "x",_x000D_
"b": "y",_x000D_
"c": "x"_x000D_
}_x000D_
output = Object.keys(input).reduceRight(function(accum, key, i) {_x000D_
accum[input[key]] = (accum[input[key]] || []).concat(key);_x000D_
return accum;_x000D_
}, {})_x000D_
console.log(output)
_x000D_
On Linux, and Unix in general, "r"
and "rb"
are the same. More specifically, a FILE
pointer obtained by fopen()
ing a file in in text mode and in binary mode behaves the same way on Unixes. On windows, and in general, on systems that use more than one character to represent "newlines", a file opened in text mode behaves as if all those characters are just one character, '\n'
.
If you want to portably read/write text files on any system, use "r"
, and "w"
in fopen()
. That will guarantee that the files are written and read properly. If you are opening a binary file, use "rb"
and "wb"
, so that an unfortunate newline-translation doesn't mess your data.
Note that a consequence of the underlying system doing the newline translation for you is that you can't determine the number of bytes you can read from a file using fseek(file, 0, SEEK_END).
Finally, see What's the difference between text and binary I/O? on comp.lang.c FAQs.
When you run the official entrypoint (A.K.A. when you launch the container), it runs initdb
in $PGDATA
(/var/lib/postgresql/data
by default), and then it stores in that directory these 2 files:
postgresql.conf
with default manual settings.postgresql.auto.conf
with settings overriden automatically with ALTER SYSTEM
commands.The entrypoint also executes any /docker-entrypoint-initdb.d/*.{sh,sql}
files.
All this means you can supply a shell/SQL script in that folder that configures the server for the next boot (which will be immediately after the DB initialization, or the next times you boot the container).
Example:
conf.sql
file:
ALTER SYSTEM SET max_connections = 6;
ALTER SYSTEM RESET shared_buffers;
Dockerfile
file:
FROM posgres:9.6-alpine
COPY *.sql /docker-entrypoint-initdb.d/
RUN chmod a+r /docker-entrypoint-initdb.d/*
And then you will have to execute conf.sql
manually in already-existing databases. Since configuration is stored in the volume, it will survive rebuilds.
Another alternative is to pass -c
flag as many times as you wish:
docker container run -d postgres -c max_connections=6 -c log_lock_waits=on
This way you don't need to build a new image, and you don't need to care about already-existing or not databases; all will be affected.
Create AMI -> Boot AMI on large instance.
More info http://docs.amazonwebservices.com/AmazonEC2/gsg/2006-06-26/creating-an-image.html
You can do this all from the admin console too at aws.amazon.com
Yes, you can use json_encode
to take your HTML string and escape it as necessary.
Note that in JSON, the top level item must be an array or object (that's not true anymore), it cannot just be a string. So you'll want to create an object and make the HTML string a property of the object (probably the only one), so the resulting JSON looks something like:
{"html": "<p>I'm the markup</p>"}
In Java8 you use the new Time API, and convert an Instant in to a ZonedDateTime Using the UTC TimeZone
The silly mistake I had done was keeping mysql.py
in same dir. Try renaming mysql.py
to another name so python
don't consider that as module.
The problem is that date
takes your request quite literally and tries to use a date of 31st September (being 31st October minus one month) and then because that doesn't exist it moves to the next day which does. The date
documentation (from info date
) has the following advice:
The fuzz in units can cause problems with relative items. For example, `2003-07-31 -1 month' might evaluate to 2003-07-01, because 2003-06-31 is an invalid date. To determine the previous month more reliably, you can ask for the month before the 15th of the current month. For example:
$ date -R Thu, 31 Jul 2003 13:02:39 -0700 $ date --date='-1 month' +'Last month was %B?' Last month was July? $ date --date="$(date +%Y-%m-15) -1 month" +'Last month was %B!' Last month was June!
Here's the mysql reference for cursors. So I'm guessing it's something like this:
DECLARE done INT DEFAULT 0;
DECLARE products_id INT;
DECLARE result varchar(4000);
DECLARE cur1 CURSOR FOR SELECT products_id FROM sets_products WHERE set_id = 1;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1;
OPEN cur1;
REPEAT
FETCH cur1 INTO products_id;
IF NOT done THEN
CALL generate_parameter_list(@product_id, @result);
SET param = param + "," + result; -- not sure on this syntax
END IF;
UNTIL done END REPEAT;
CLOSE cur1;
-- now trim off the trailing , if desired
Typically you need to do 5 things to include a library in your project:
1) Add #include statements necessary files with declarations/interfaces, e.g.:
#include "library.h"
2) Add an include directory for the compiler to look into
-> Configuration Properties/VC++ Directories/Include Directories (click and edit, add a new entry)
3) Add a library directory for *.lib files:
-> project(on top bar)/properties/Configuration Properties/VC++ Directories/Library Directories (click and edit, add a new entry)
4) Link the lib's *.lib files
-> Configuration Properties/Linker/Input/Additional Dependencies (e.g.: library.lib;
5) Place *.dll files either:
-> in the directory you'll be opening your final executable from or into Windows/system32
Just an addition to @Andy Hayden's answer:
Since DataFrame.mask
is the opposite twin of DataFrame.where
, they have the exactly same signature but with opposite meaning:
DataFrame.where
is useful for Replacing values where the condition is False. DataFrame.mask
is used for Replacing values where the condition is True.So in this question, using df.mask(df.isna(), other=None, inplace=True)
might be more intuitive.
Change the value for Platform Target on your web project's property page to Any CPU
.
You're looking for the /Y
switch.
I presume you mean curve-fitting and not anti-aliasing from the context of your question. PyPlot doesn't have any built-in support for this, but you can easily implement some basic curve-fitting yourself, like the code seen here, or if you're using GuiQwt it has a curve fitting module. (You could probably also steal the code from SciPy to do this as well).
I'm using firebird First of all, create a one column table named "NoTable" like this
CREATE TABLE NOTABLE
(
NOCOLUMN INTEGER
);
INSERT INTO NOTABLE VALUES (0); -- You can put any value
now you can write this
select 'hello world' as name
from notable
you can add any column you want to be shown
In simple words, order()
gives the locations of elements of increasing magnitude.
For example, order(c(10,20,30))
will give 1,2,3 and
order(c(30,20,10))
will give 3,2,1.
quick solution could be:
SELECT your_db_column_name from "your_db_schema_name"."your_db_tabel_name";
Just adding to the solution by @rmalouf, this will not include any numbers because \w+ is equivalent to [a-zA-Z0-9_]
from nltk.tokenize import RegexpTokenizer
tokenizer = RegexpTokenizer(r'[a-zA-Z]')
tokenizer.tokenize('Eighty-seven miles to go, yet. Onward!')
Also, correct me if I'm wrong, but I believe that submit will wait for a new page to load, whereas click will immediately continue executing code
if you are adding multiple items to the list use this:
mAdapter.notifyItemRangeInserted(startPosition, itemcount);
This notify any registered observers that the currently reflected itemCount items starting at positionStart have been newly inserted. The item previously located at positionStart and beyond can now be found starting at position positinStart+itemCount
existing item in the dataset still considered up to date.
<?php
if(!@mysql_connect('127.0.0.1', 'root', '*your default password*'))
{
echo "mysql not connected ".mysql_error();
exit;
}
echo 'great work';
?>
if no error then you will get greatwork as output.
Try it saved my life XD XD
Based on above all answers I created an example code for how to create priority queue. Note: It works C++11 and above compilers
#include <iostream>
#include <vector>
#include <iomanip>
#include <queue>
using namespace std;
// template for prirority Q
template<class T> using min_heap = priority_queue<T, std::vector<T>, std::greater<T>>;
template<class T> using max_heap = priority_queue<T, std::vector<T>>;
const int RANGE = 1000;
vector<int> get_sample_data(int size);
int main(){
int n;
cout << "Enter number of elements N = " ; cin >> n;
vector<int> dataset = get_sample_data(n);
max_heap<int> max_pq;
min_heap<int> min_pq;
// Push data to Priority Queue
for(int i: dataset){
max_pq.push(i);
min_pq.push(i);
}
while(!max_pq.empty() && !min_pq.empty()){
cout << setw(10) << min_pq.top()<< " | " << max_pq.top() << endl;
min_pq.pop();
max_pq.pop();
}
}
vector<int> get_sample_data(int size){
srand(time(NULL));
vector<int> dataset;
for(int i=0; i<size; i++){
dataset.push_back(rand()%RANGE);
}
return dataset;
}
Output of Above code
Enter number of elements N = 4
33 | 535
49 | 411
411 | 49
535 | 33
Many of the answers are correct but I feel like they could be more complete / simplistic etc. for example :
Example 1 : Basic if statement
# BASH4+ example on Linux :
typeset read_file="/tmp/some-file.txt"
if [ ! -s "${read_file}" ] || [ ! -f "${read_file}" ] ;then
echo "Error: file (${read_file}) not found.. "
exit 7
fi
if $read_file is empty or not there stop the show with exit. More than once I have had misread the top answer here to mean the opposite.
Example 2 : As a function
# -- Check if file is missing /or empty --
# Globals: None
# Arguments: file name
# Returns: Bool
# --
is_file_empty_or_missing() {
[[ ! -f "${1}" || ! -s "${1}" ]] && return 0 || return 1
}
What is "it" in the statement "it just says the procedure is completed"?
By default, most tools do not configure a buffer for dbms_output
to write to and do not attempt to read from that buffer after code executes. Most tools, on the other hand, have the ability to do so. In SQL*Plus, you'd need to use the command set serveroutput on [size N|unlimited]
. So you'd do something like
SQL> set serveroutput on size 30000;
SQL> exec print_actor_quotes( <<some value>> );
In SQL Developer, you'd go to View | DBMS Output
to enable the DBMS Output window, then push the green plus icon to enable DBMS Output for a particular session.
Additionally, assuming that you don't want to print the literal "a.firstNamea.lastName" for every row, you probably want
FOR row IN quote_recs
LOOP
DBMS_OUTPUT.PUT_LINE( row.firstName || ' ' || row.lastName );
END LOOP;
Let's make it a POSIX oneliner:
a="/$0"; a=${a%/*}; a=${a#/}; a=${a:-.}; BASEDIR=$(cd "$a"; pwd)
Tested on many Bourne-compatible shells including the BSD ones.
As far as I know I am the author and I put it into public domain. For more info see: https://www.jasan.tk/posts/2017-05-11-posix_shell_dirname_replacement/
The original query used user variables and ORDER BY
on derived tables; the behavior of both quirks is not guaranteed. Revised answer as follows.
In MySQL 5.x you can use poor man's rank over partition to achieve desired result. Just outer join the table with itself and for each row, count the number of rows lesser than it. In the above case, lesser row is the one with higher rate:
SELECT t.id, t.rate, t.year, COUNT(l.rate) AS rank
FROM t
LEFT JOIN t AS l ON t.id = l.id AND t.rate < l.rate
GROUP BY t.id, t.rate, t.year
HAVING COUNT(l.rate) < 5
ORDER BY t.id, t.rate DESC, t.year
| id | rate | year | rank |
|-----|------|------|------|
| p01 | 8.0 | 2006 | 0 |
| p01 | 7.4 | 2003 | 1 |
| p01 | 6.8 | 2008 | 2 |
| p01 | 5.9 | 2001 | 3 |
| p01 | 5.3 | 2007 | 4 |
| p02 | 12.5 | 2001 | 0 |
| p02 | 12.4 | 2004 | 1 |
| p02 | 12.2 | 2002 | 2 |
| p02 | 10.3 | 2003 | 3 |
| p02 | 8.7 | 2000 | 4 |
Note that if the rates had ties, for example:
100, 90, 90, 80, 80, 80, 70, 60, 50, 40, ...
The above query will return 6 rows:
100, 90, 90, 80, 80, 80
Change to HAVING COUNT(DISTINCT l.rate) < 5
to get 8 rows:
100, 90, 90, 80, 80, 80, 70, 60
Or change to ON t.id = l.id AND (t.rate < l.rate OR (t.rate = l.rate AND t.pri_key > l.pri_key))
to get 5 rows:
100, 90, 90, 80, 80
In MySQL 8 or later just use the RANK
, DENSE_RANK
or ROW_NUMBER
functions:
SELECT *
FROM (
SELECT *, RANK() OVER (PARTITION BY id ORDER BY rate DESC) AS rnk
FROM t
) AS x
WHERE rnk <= 5
I've written a script to get all child process pids of a parent process. Here is the code. Hope it will help.
function getcpid() {
cpids=`pgrep -P $1|xargs`
# echo "cpids=$cpids"
for cpid in $cpids;
do
echo "$cpid"
getcpid $cpid
done
}
getcpid $1
In my case, two jQuery modals were showing stacked on top of each other. Preventing that solved my problem.
There is a simpler way, sql timestamp string:
2018-07-19 00:00:00
The closest format to timestamp for Date() to receive is the following, so replace blank space for "T":
var dateString = media.intervention.replace(/\s/g, "T");
"2011-10-10T14:48:00"
Then, create the date object:
var date = new Date(dateString);
result would be the date object:
Thu Jul 19 2018 00:00:00 GMT-0300 (Horário Padrão de Brasília)
Example in arrow functions:
let somethingTrue = true
[1,2,3,4,5].map(i=>somethingTrue && i*2)
In promises:
Promise.resolve()
.then(_=>checkTrueFalse && asyncFunc())
.then(_=>{ .. })
Otherwise:
if(somethingTrue) thenDo()
If it's just a simple conditional, I prefer using if(value) whenever possible because the word if in the beginning of the statement says more about what's happening than paranthesis and questionmarks.
If the elapsed event takes longer then the interval, it will create another thread to raise the elapsed event. But there is a workaround for this
static void timer_Elapsed(object sender, ElapsedEventArgs e)
{
try
{
timer.Stop();
Thread.Sleep(2000);
Debug.WriteLine(Thread.CurrentThread.ManagedThreadId);
}
finally
{
timer.Start();
}
}
There is a very elegant solution to this problem, just configure your site via web.config:
<system.webServer>
<httpErrors errorMode="DetailedLocalOnly" existingResponse="PassThrough"/>
</system.webServer>
You can declare the macro NULL. Add that after your #includes:
#define NULL 0
or
#ifndef NULL
#define NULL 0
#endif
No ";" at the end of the instructions...
DATE: It is used for values with a date part but no time part. MySQL retrieves and displays DATE values in YYYY-MM-DD format. The supported range is 1000-01-01
to 9999-12-31
.
DATETIME: It is used for values that contain both date and time parts. MySQL retrieves and displays DATETIME values in YYYY-MM-DD HH:MM:SS format. The supported range is 1000-01-01 00:00:00
to 9999-12-31 23:59:59
.
TIMESTAMP: It is also used for values that contain both date and time parts, and includes the time zone. TIMESTAMP has a range of 1970-01-01 00:00:01
UTC to 2038-01-19 03:14:07
UTC.
TIME: Its values are in HH:MM:SS format (or HHH:MM:SS format for large hours values). TIME values may range from -838:59:59
to 838:59:59
. The hours part may be so large because the TIME type can be used not only to represent a time of day (which must be less than 24 hours), but also elapsed time or a time interval between two events (which may be much greater than 24 hours, or even negative).
Im my case the problem was that I cretead sertificates without entering any data in cli interface. When I regenerated cretificates and enetered all fields: City, State, etc all became fine.
sudo openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout /etc/ssl/private/nginx-selfsigned.key -out /etc/ssl/certs/nginx-selfsigned.crt
bundle exec
is a Bundler command to execute a script in the context of the current bundle (the one from your directory's Gemfile). rake db:migrate
is the script where db is the namespace and migrate is the task name defined.
So bundle exec rake db:migrate
executes the rake script with the command db:migrate
in the context of the current bundle.
As to the "why?" I'll quote from the bundler page:
In some cases, running executables without
bundle exec
may work, if the executable happens to be installed in your system and does not pull in any gems that conflict with your bundle.However, this is unreliable and is the source of considerable pain. Even if it looks like it works, it may not work in the future or on another machine.
I know LOTS of people wouldn't agree, but this is what I do and I really enjoy such a coding style: I actually don't use any quote in HTML unless it is absolutely necessary.
Example:
<form method=post action=#>
<fieldset>
<legend>Register here: </legend>
<label for=account>Account: </label>
<input id=account type=text name=account required><br>
<label for=password>Password: </label>
<input id=password type=password name=password required><br>
...
Double quotes are used only when there are spaces in the attribute values or whatever:
<form class="val1 val2 val3" method=post action=#>
...
</form>
The following can be used to test for the existence of a file, and then to delete it.
Dim aFile As String
aFile = "c:\file_to_delete.txt"
If Len(Dir$(aFile)) > 0 Then
Kill aFile
End If
First of all, you should use none of them. You are using wrapper
type, which should rarely be used in case you have a primitive type.
So, you should use boolean
rather.
Further, we initialize the boolean
variable to false
to hold an initial default value which is false. In case you have declared it as instance variable, it will automatically be initialized to false
.
But, its completely upto you, whether you assign a default value or not. I rather prefer to initialize them at the time of declaration.
But if you are immediately assigning to your variable, then you can directly assign a value to it, without having to define a default
value.
So, in your case I would use it like this: -
boolean isMatch = email1.equals (email2);
All JavaBeans are POJOs but not all POJOs are JavaBeans.
A JavaBean is a Java object that satisfies certain programming conventions:
The simplest way is to test whether a number is an integer is int(x) == x
. Otherwise, what David Heffernan said.
It's a reference to the current object, it's most commonly used in object oriented code.
Example:
<?php
class Person {
public $name;
function __construct( $name ) {
$this->name = $name;
}
};
$jack = new Person('Jack');
echo $jack->name;
This stores the 'Jack' string as a property of the object created.
# Possible values for the Options directive are "None", "All",
# or any combination of:
# Indexes Includes FollowSymLinks SymLinksifOwnerMatch ExecCGI MultiViews
#
# Note that "MultiViews" must be named *explicitly* --- "Options All"
# doesn't give it to you.
#
# The Options directive is both complicated and important. Please see
# http://httpd.apache.org/docs/2.2/mod/core.html#options
# for more information.
#
Options Indexes FollowSymLinks Includes ExecCGI
#
# AllowOverride controls what directives may be placed in .htaccess files.
# It can be "All", "None", or any combination of the keywords:
# Options FileInfo AuthConfig Limit
#
AllowOverride All
#
# Controls who can get stuff from this server.
#
Require all granted
Write above code inside following tags < Directory "c:\projects" > < / Directory > c:(you can add any directory d: e:) is drive where you have created your project folder.
Alias /projects "c:\projects"
Now you can access the pr0jects directory on your browser :
localhost/projects/
NaN stands for Not a Number. It is used to signify any value that is mathematically undefined. Like dividing 0.0 by 0.0. You can look here for more information: https://web.archive.org/web/20120819091816/http://www.concentric.net/~ttwang/tech/javafloat.htm
Post your program here if you need more help.
You need to remove the object from your data array before you call deleteRowsAtIndexPaths:withRowAnimation:
. So, your code should look like this:
// Editing of rows is enabled
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
if (editingStyle == UITableViewCellEditingStyleDelete) {
//when delete is tapped
[currentCart removeObjectAtIndex:indexPath.row];
[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
}
}
You can also simplify your code a little by using the array creation shortcut @[]
:
[tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];
Replace the "YOUR DATABASE NAME" in the query below.
DECLARE @Database NVARCHAR(255)
DECLARE @Table NVARCHAR(255)
DECLARE @cmd NVARCHAR(1000)
DECLARE DatabaseCursor CURSOR READ_ONLY FOR
SELECT name FROM master.sys.databases
WHERE name IN ('YOUR DATABASE NAME') -- databases
AND state = 0 -- database is online
AND is_in_standby = 0 -- database is not read only for log shipping
ORDER BY 1
OPEN DatabaseCursor
FETCH NEXT FROM DatabaseCursor INTO @Database
WHILE @@FETCH_STATUS = 0
BEGIN
SET @cmd = 'DECLARE TableCursor CURSOR READ_ONLY FOR SELECT ''['' + table_catalog + ''].['' + table_schema + ''].['' +
table_name + '']'' as tableName FROM [' + @Database + '].INFORMATION_SCHEMA.TABLES WHERE table_type = ''BASE TABLE'''
-- create table cursor
EXEC (@cmd)
OPEN TableCursor
FETCH NEXT FROM TableCursor INTO @Table
WHILE @@FETCH_STATUS = 0
BEGIN
BEGIN TRY
SET @cmd = 'ALTER INDEX ALL ON ' + @Table + ' REBUILD'
PRINT @cmd -- uncomment if you want to see commands
EXEC (@cmd)
END TRY
BEGIN CATCH
PRINT '---'
PRINT @cmd
PRINT ERROR_MESSAGE()
PRINT '---'
END CATCH
FETCH NEXT FROM TableCursor INTO @Table
END
CLOSE TableCursor
DEALLOCATE TableCursor
FETCH NEXT FROM DatabaseCursor INTO @Database
END
CLOSE DatabaseCursor
DEALLOCATE DatabaseCursor
With a = subprocess.Popen("cdrecord --help",stdout = subprocess.PIPE)
, you need to either use a list or use shell=True
;
Either of these will work. The former is preferable.
a = subprocess.Popen(['cdrecord', '--help'], stdout=subprocess.PIPE)
a = subprocess.Popen('cdrecord --help', shell=True, stdout=subprocess.PIPE)
Also, instead of using Popen.stdout.read
/Popen.stderr.read
, you should use .communicate()
(refer to the subprocess documentation for why).
proc = subprocess.Popen(['cdrecord', '--help'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
stdout, stderr = proc.communicate()
You don't need an index match formula. You can use this array formula. You have to press CTL + SHIFT + ENTER after you enter the formula.
=MAX(IF((A1:A6=A10)*(B1:B6=B10),C1:F6))
SNAPSHOT
As you mentioned, there could be two below versions of defining a List:
List<? extends Map<String, String>>
List<?>
2 is very open. It can hold any object type. This may not be useful in case you want to have a map of a given type. In case someone accidentally puts a different type of map, for example, Map<String, int>
. Your consumer method might break.
In order to ensure that List
can hold objects of a given type, Java generics introduced ? extends
. So in #1, the List
can hold any object which is derived from Map<String, String>
type. Adding any other type of data would throw an exception.
If you have an array of keys that you want to use then use array_combine
Given $keys = array('a', 'b', 'c', ...) and your array, $list, then do this:
$list = array_combine($keys, array_values($list));
List will now be array('a' => 'blabla 1', ...) etc.
You have to use array_values
to extract just the values from the array and not the old, numeric, keys.
That's nice and simple looking but array_values makes an entire copy of the array so you could have space issues. All we're doing here is letting php do the looping for us, not eliminate the loop. I'd be tempted to do something more like:
foreach ($list as $k => $v) {
unset ($list[$k]);
$new_key = *some logic here*
$list[$new_key] = $v;
}
I don't think it's all that more efficient than the first code but it provides more control and won't have issues with the length of the arrays.
If you are happy to run a batch file along with a couple of tiny helper programs, a complete solution is posted here:
How can a batch file run a program and set the position and size of the window? - Stack Overflow (asked: May 1, 2012)
You can use prop() for this, as Before jQuery 1.6, the .attr() method sometimes took property values into account when retrieving some attributes, which could cause inconsistent behavior. As of jQuery 1.6, the .prop()
method provides a way to explicitly retrieve property values, while .attr()
retrieves attributes.
var prop=false;
if(value == 1) {
prop=true;
}
$('#checkbox').prop('checked',prop);
or simply,
$('#checkbox').prop('checked',(value == 1));
Snippet
$(document).ready(function() {_x000D_
var chkbox = $('.customcheckbox');_x000D_
$(".customvalue").keyup(function() {_x000D_
chkbox.prop('checked', this.value==1);_x000D_
});_x000D_
});
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>_x000D_
<h4>This is a domo to show check box is checked_x000D_
if you enter value 1 else check box will be unchecked </h4>_x000D_
Enter a value:_x000D_
<input type="text" value="" class="customvalue">_x000D_
<br>checkbox output :_x000D_
<input type="checkbox" class="customcheckbox">
_x000D_
/^(?!my).*/
(?!expression)
is a negative lookahead; it matches a position where expression
doesn't match starting at that position.
LocalDate localDate = LocalDate.parse( new SimpleDateFormat("yyyy-MM-dd").format(date) );
Try this one:
$("div.subtab_left li.notebook a").click(function(e) {
e.preventDefault();
return false;
});
If you know the order of elements in your Set, you can retrieve them by converting the Set to an Array. Something like this:
Set mySet = MyStorageObject.getMyStringSet();
Object[] myArr = mySet.toArray();
String value1 = myArr[0].toString();
String value2 = myArr[1].toString();
If you want to set this up once and use it everywhere, just configure your own middleware. When you are setting up your app, use the following to define a new function on the response object:
app.use((req, res, next) => {
res.show = (name) => {
res.sendFile(`/public/${name}`, {root: __dirname});
};
next();
});
Then use it as follows:
app.get('/demo', (req, res) => {
res.show("index1.html");
});
On Windows 10, I was able to search for set path environment variable and got these instructions:
C:\Program Files;C:\Winnt;C:\Winnt\System32
The first time I searched for it, it immediately popped up the System Properties Window. After that, I found the above instructions.
There may be some file access permission/restriction problems. First check to access the below directory manually, check whether your TARGET_VERSION exists, Then check the android sdk manager.
Had the same problem. For me it worked to call
viewPage.setAdapter( adapter );
again which caused reinstantiating the pages again.
You can do like:
Thread t1 = new Thread(new Runnable() {
public void run()
{
// code goes here.
}});
t1.start();
As @Mahmoodvcs mentioned i was require to set/add MIME types for the file extension that I needed to host/download directly, in this case is a Heroku's dump file (postgres's database backup), so in order to set a public IIS server where you can download this files without requiring AWS S3 bucket or HTTP shares like dropbox this is a terrific option!
<staticContent>
<mimeMap fileExtension=".dump" mimeType="application/octet-stream" />
</staticContent>
I hit this same issue trying to install Dashcast on Centos 7. The fix was adding -fPIC
at the end of each of the CFLAGS in the x264 Makefile. Then I had to run make distclean
for both x264 and ffmpeg and rebuild.
Set flag -ObjC in Other linker Flag in your Project setting... (Not in the static library project but the project you that is using static library...) And make sure that in Project setting Configuration is set to All Configuration
I use ruamel.yaml. Details & debate here.
from ruamel import yaml
with open(filename, 'r') as fp:
read_data = yaml.load(fp)
Usage of ruamel.yaml is compatible (with some simple solvable problems) with old usages of PyYAML and as it is stated in link I provided, use
from ruamel import yaml
instead of
import yaml
and it will fix most of your problems.
EDIT: PyYAML is not dead as it turns out, it's just maintained in a different place.
You mention that there are date duplicates, but it appears they're quite unique down to the precision of seconds.
Can you clarify what precision of date you start considering dates duplicate - day, hour, minute?
In any case, you'll probably want to floor your datetime field. You didn't indicate which field is preferred when removing duplicates, so this query will prefer the last name in alphabetical order.
SELECT MAX(owner_name),
--floored to the second
dateadd(second,datediff(second,'2000-01-01',start_date),'2000-01-01') AS StartDate
From MyTable
GROUP BY dateadd(second,datediff(second,'2000-01-01',start_date),'2000-01-01')
What I am wondering is if there is any strange way to make this check even faster, maybe exploiting some strange method in Regexp or some weird construct.
Regexp engines vary in how they implement searches, but, in general, anchor your patterns for speed, and avoid greedy matches, especially when searching long strings.
The best thing to do, until you're familiar with how a particular engine works, is to do benchmarks and add/remove anchors, try limiting searches, use wildcards vs. explicit matches, etc.
The Fruity gem is very useful for quickly benchmarking things, because it's smart. Ruby's built-in Benchmark code is also useful, though you can write tests that fool you by not being careful.
I've used both in many answers here on Stack Overflow, so you can search through my answers and will see lots of little tricks and results to give you ideas of how to write faster code.
The biggest thing to remember is, it's bad to prematurely optimize your code before you know where the slowdowns occur.
Call any of these
byte[] org.apache.commons.io.FileUtils.readFileToByteArray(File file)
byte[] org.apache.commons.io.IOUtils.toByteArray(InputStream input)
From
If the library footprint is too big for your Android app, you can just use relevant classes from the commons-io library
Luckily, we now have a couple of convenience methods in the nio packages. For instance:
byte[] java.nio.file.Files.readAllBytes(Path path)
I kept having this problem, and I cleaned up the Dalvik cache using Titanium Backup. You'll need to have your phone rooted. As soon as I did that I was able to update Swiftkey and Beautiful Widgets.
you could also go to Hardware -> reboot, then Hardware -> Home, and click on your App
Without knowing more about what you are doing (Linq2Objects, Linq2Entities, Linq2Sql?), this should make it work:
Arr[] myArray = objects.AsEnumerable().Select(o => {
var someLocalVar = o.someVar;
return new Obj() {
Var1 = someLocalVar,
Var2 = o.var2
};
}).ToArray();
As @jAndy mentioned, there is no properly javascript code to detect a window being closed. I started from what @Syno had proposed.
I had pass though a situation like that and provided you follow these steps, you'll be able to detect it.
I tested it on Chrome 67+ and Firefox 61+.
var wrapper = function () { //ignore this
var closing_window = false;
$(window).on('focus', function () {
closing_window = false;
//if the user interacts with the window, then the window is not being
//closed
});
$(window).on('blur', function () {
closing_window = true;
if (!document.hidden) { //when the window is being minimized
closing_window = false;
}
$(window).on('resize', function (e) { //when the window is being maximized
closing_window = false;
});
$(window).off('resize'); //avoid multiple listening
});
$('html').on('mouseleave', function () {
closing_window = true;
//if the user is leaving html, we have more reasons to believe that he's
//leaving or thinking about closing the window
});
$('html').on('mouseenter', function () {
closing_window = false;
//if the user's mouse its on the page, it means you don't need to logout
//them, didn't it?
});
$(document).on('keydown', function (e) {
if (e.keyCode == 91 || e.keyCode == 18) {
closing_window = false; //shortcuts for ALT+TAB and Window key
}
if (e.keyCode == 116 || (e.ctrlKey && e.keyCode == 82)) {
closing_window = false; //shortcuts for F5 and CTRL+F5 and CTRL+R
}
});
// Prevent logout when clicking in a hiperlink
$(document).on("click", "a", function () {
closing_window = false;
});
// Prevent logout when clicking in a button (if these buttons rediret to some page)
$(document).on("click", "button", function () {
closing_window = false;
});
// Prevent logout when submiting
$(document).on("submit", "form", function () {
closing_window = false;
});
// Prevent logout when submiting
$(document).on("click", "input[type=submit]", function () {
closing_window = false;
});
var toDoWhenClosing = function() {
//write a code here likes a user logout, example:
//$.ajax({
// url: '/MyController/MyLogOutAction',
// async: false,
// data: {
// },
// error: function () {
// },
// success: function (data) {
// },
//});
};
window.onbeforeunload = function () {
if (closing_window) {
toDoWhenClosing();
}
};
};
x = [10000.21, 22000.32, 10120.54]
Perhaps make a list (comprehension) for the labels, and then apply them "manually".
xlables = [f'{label:,}' for label in x]
plt.xticks(x, xlabels)
You can also use very simple, and basic function: str.replace(), works with the whitespaces and tabs:
>>> whitespaces = " abcd ef gh ijkl "
>>> tabs = " abcde fgh ijkl"
>>> print whitespaces.replace(" ", "")
abcdefghijkl
>>> print tabs.replace(" ", "")
abcdefghijkl
Simple and easy.
You can use transitions to delay the :hover
effect you want, if the effect is CSS-based.
For example
div{
transition: 0s background-color;
}
div:hover{
background-color:red;
transition-delay:1s;
}
this will delay applying the the hover effects (background-color
in this case) for one second.
Demo of delay on both hover on and off:
div{_x000D_
display:inline-block;_x000D_
padding:5px;_x000D_
margin:10px;_x000D_
border:1px solid #ccc;_x000D_
transition: 0s background-color;_x000D_
transition-delay:1s;_x000D_
}_x000D_
div:hover{_x000D_
background-color:red;_x000D_
}
_x000D_
<div>delayed hover</div>
_x000D_
Demo of delay only on hover on:
div{_x000D_
display:inline-block;_x000D_
padding:5px;_x000D_
margin:10px;_x000D_
border:1px solid #ccc;_x000D_
transition: 0s background-color;_x000D_
}_x000D_
div:hover{_x000D_
background-color:red; _x000D_
transition-delay:1s;_x000D_
}
_x000D_
<div>delayed hover</div>
_x000D_
Vendor Specific Extentions for Transitions and W3C CSS3 transitions
Please check the compatibility. I struggled with mvn 3.2.1
and jdk 1.6.0_37
for many hours. All variables were set but was not working. Finally I upgraded jdk to 1.8.0_60
and mvn 3.3.3
and that worked. Environment Variables as following:
JAVA_HOME=C:\ProgramFiles\Java\jdk1.8.0_60
MVN_HOME=C:\ProgramFiles\apache-maven\apache-maven-3.3.3
M2=%MVN_HOME%\bin extend system level Path- ;%M2%;%JAVA_HOME%\bin;
proposed solution edit works if you replace the row
Set rDst = ThisWorkbook.Sheets("SomeSheet").Cells("YourCell").Resize(rSrc.Rows.Count, rSrc.Columns.Count)
with
Set rDst = ThisWorkbook.Sheets("SomeSheet").Range("YourRange").Resize(rSrc.Rows.Count, rSrc.Columns.Count)
You can select a child like
TextView tv = (TextView)lv.getChildAt(0);
tv.setTextColor(Color.RED);
tv.setTextSize(12);
Apart from the <h:panelGroup>
component (which comes as a bit of a surprise to me), you could use a <f:verbatim>
tag with the escape parameter set to false
to generate any mark-up you want. For example:
<f:verbatim escape="true">
<div id="blah"></div>
</f:verbatim>
Bear in mind it's a little less elegant than the panelGroup
solution, as you have to generate this for both the start and end tags if you want to wrap any of your JSF code with the div
tag.
Alternatively, all the major UI Frameworks have a div
component tag, or you could write your own.
Using TinyMCE editor, the only way I was able to remove all borders was to use border:hidden
in the style like this:
<style>
table, tr {border:hidden;}
td, th {border:hidden;}
</style>
And in the HTML like this:
<table style="border:hidden;"</table>
Cheers
You can use the replace
function
UPDATE your_table SET field = REPLACE(your_field, 'cat','dog')
The function definition is as follows (got from here):
replace(string text, from text, to text)
and returns the modified text. You can also check out this sql fiddle.
This function tells the entity referenced by REF that it is now an object in the CLASSNAME package, or the current package if CLASSNAME is omitted. Use of the two-argument form of bless is recommended.
Example:
bless REF, CLASSNAME
bless REF
Return Value
This function returns the reference to an object blessed into CLASSNAME.
Example:
Following is the example code showing its basic usage, the object reference is created by blessing a reference to the package's class -
#!/usr/bin/perl
package Person;
sub new
{
my $class = shift;
my $self = {
_firstName => shift,
_lastName => shift,
_ssn => shift,
};
# Print all the values just for clarification.
print "First Name is $self->{_firstName}\n";
print "Last Name is $self->{_lastName}\n";
print "SSN is $self->{_ssn}\n";
bless $self, $class;
return $self;
}
One solution is to make another process to perform your read of the process, or make a thread of the process with a timeout.
Here's the threaded version of a timeout function:
http://code.activestate.com/recipes/473878/
However, do you need to read the stdout as it's coming in? Another solution may be to dump the output to a file and wait for the process to finish using p.wait().
f = open('myprogram_output.txt','w')
p = subprocess.Popen('myprogram.exe', stdout=f)
p.wait()
f.close()
str = open('myprogram_output.txt','r').read()
upgraded MaxU's answer with MultiIndex support
def explode(df, lst_cols, fill_value='', preserve_index=False):
"""
usage:
In [134]: df
Out[134]:
aaa myid num text
0 10 1 [1, 2, 3] [aa, bb, cc]
1 11 2 [] []
2 12 3 [1, 2] [cc, dd]
3 13 4 [] []
In [135]: explode(df, ['num','text'], fill_value='')
Out[135]:
aaa myid num text
0 10 1 1 aa
1 10 1 2 bb
2 10 1 3 cc
3 11 2
4 12 3 1 cc
5 12 3 2 dd
6 13 4
"""
# make sure `lst_cols` is list-alike
if (lst_cols is not None
and len(lst_cols) > 0
and not isinstance(lst_cols, (list, tuple, np.ndarray, pd.Series))):
lst_cols = [lst_cols]
# all columns except `lst_cols`
idx_cols = df.columns.difference(lst_cols)
# calculate lengths of lists
lens = df[lst_cols[0]].str.len()
# preserve original index values
idx = np.repeat(df.index.values, lens)
res = (pd.DataFrame({
col:np.repeat(df[col].values, lens)
for col in idx_cols},
index=idx)
.assign(**{col:np.concatenate(df.loc[lens>0, col].values)
for col in lst_cols}))
# append those rows that have empty lists
if (lens == 0).any():
# at least one list in cells is empty
res = (res.append(df.loc[lens==0, idx_cols], sort=False)
.fillna(fill_value))
# revert the original index order
res = res.sort_index()
# reset index if requested
if not preserve_index:
res = res.reset_index(drop=True)
# if original index is MultiIndex build the dataframe from the multiindex
# create "exploded" DF
if isinstance(df.index, pd.MultiIndex):
res = res.reindex(
index=pd.MultiIndex.from_tuples(
res.index,
names=['number', 'color']
)
)
return res
It seems to be (as of 2018.03) in code-insider. A directive has been introduced called python.venvFolders:
"python.venvFolders": [
"envs",
".pyenv",
".direnv"
],
All you need is to add your virtualenv folder name.
socket.send
is implemented for compatibility with vanilla WebSocket interface. socket.emit
is feature of Socket.IO only. They both do the same, but socket.emit
is a bit more convenient in handling messages.
Without a look at your exact JSON output, it's hard to give you some working code. This tutorial is very useful, but you could use something along the lines of:
JSONObject jsonObj = new JSONObject("yourJsonString");
Then you can retrieve from this json object using:
String value = jsonObj.getString("yourKey");
Actually, there are different ways to downcast float to int, depending on the result you want to achieve:
(for int i
, float f
)
round (the closest integer to given float)
i = Math.round(f);
f = 2.0 -> i = 2 ; f = 2.22 -> i = 2 ; f = 2.68 -> i = 3
f = -2.0 -> i = -2 ; f = -2.22 -> i = -2 ; f = -2.68 -> i = -3
note: this is, by contract, equal to (int) Math.floor(f + 0.5f)
truncate (i.e. drop everything after the decimal dot)
i = (int) f;
f = 2.0 -> i = 2 ; f = 2.22 -> i = 2 ; f = 2.68 -> i = 2
f = -2.0 -> i = -2 ; f = -2.22 -> i = -2 ; f = -2.68 -> i = -2
ceil/floor (an integer always bigger/smaller than a given value if it has any fractional part)
i = (int) Math.ceil(f);
f = 2.0 -> i = 2 ; f = 2.22 -> i = 3 ; f = 2.68 -> i = 3
f = -2.0 -> i = -2 ; f = -2.22 -> i = -2 ; f = -2.68 -> i = -2
i = (int) Math.floor(f);
f = 2.0 -> i = 2 ; f = 2.22 -> i = 2 ; f = 2.68 -> i = 2
f = -2.0 -> i = -2 ; f = -2.22 -> i = -3 ; f = -2.68 -> i = -3
For rounding positive values, you can also just use (int)(f + 0.5)
, which works exactly as Math.Round
in those cases (as per doc).
You can also use Math.rint(f)
to do the rounding to the nearest even integer; it's arguably useful if you expect to deal with a lot of floats with fractional part strictly equal to .5 (note the possible IEEE rounding issues), and want to keep the average of the set in place; you'll introduce another bias, where even numbers will be more common than odd, though.
See
http://mindprod.com/jgloss/round.html
http://docs.oracle.com/javase/6/docs/api/java/lang/Math.html
for more information and some examples.
count_smiths = (df['LastName'] == 'Smith').sum()
If you want to monitor the execution of task, you could spin 1 or 2 threads (maybe more depending on the load) and use them to take tasks from an ExecutionCompletionService wrapper.