You have to replace string line
QString line = in.readLine();
into while:
QFile file("/home/hamad/lesson11.txt");
if(!file.open(QIODevice::ReadOnly)) {
QMessageBox::information(0, "error", file.errorString());
}
QTextStream in(&file);
while(!in.atEnd()) {
QString line = in.readLine();
QStringList fields = line.split(",");
model->appendRow(fields);
}
file.close();
Use count(d.ertek)
or count(d.id)
instead of count(d)
. This can be happen when you have composite primary key at your entity.
At our company, instead of asking a lot of SQL questions that anyone with a good memory can answer, we created a SQL Developers test. The test is designed to have the candidate put together a solid schema with normalization and RI considerations, check constraints etc. And then be able to create some queries to produce results sets we're looking for. They create all this against a brief design specification we give them. They are allowed to do this at home, and take as much time as they need (within reason).
Public Class Form1
Private animatedimage As New Bitmap("C:\MyData\Search.gif")
Private currentlyanimating As Boolean = False
Private Sub OnFrameChanged(ByVal sender As System.Object, ByVal e As System.EventArgs)
Me.Invalidate()
End Sub
Private Sub AnimateImage()
If currentlyanimating = True Then
ImageAnimator.Animate(animatedimage, AddressOf Me.OnFrameChanged)
currentlyanimating = False
End If
End Sub
Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs)
AnimateImage()
ImageAnimator.UpdateFrames(animatedimage)
e.Graphics.DrawImage(animatedimage, New Point((Me.Width / 4) + 40, (Me.Height / 4) + 40))
End Sub
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
BtnStop.Enabled = False
End Sub
Private Sub BtnStop_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnStop.Click
currentlyanimating = False
ImageAnimator.StopAnimate(animatedimage, AddressOf Me.OnFrameChanged)
BtnStart.Enabled = True
BtnStop.Enabled = False
End Sub
Private Sub BtnStart_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnStart.Click
currentlyanimating = True
AnimateImage()
BtnStart.Enabled = False
BtnStop.Enabled = True
End Sub
End Class
You can use special characters to make lots of shapes. Examples: http://jsfiddle.net/martlark/jWh2N/2/
<table>_x000D_
<tr>_x000D_
<td>hollow square</td>_x000D_
<td>□</td>_x000D_
</tr>_x000D_
<tr>_x000D_
<td>solid circle</td>_x000D_
<td>•</td>_x000D_
</tr>_x000D_
<tr>_x000D_
<td>open circle</td>_x000D_
<td>๐</td>_x000D_
</tr>_x000D_
_x000D_
</table>
_x000D_
Many more can be found here: HTML Special Characters
public static String readFileToString(String filePath) {
InputStream in = Test.class.getResourceAsStream(filePath);//filePath="/com/myproject/Sample.xml"
try {
return IOUtils.toString(in, StandardCharsets.UTF_8);
} catch (IOException e) {
logger.error("Failed to read the xml : ", e);
}
return null;
}
Just FYI, Geocoder is asynchronous so the accepted answer while logical doesn't really work in this instance. I would prefer to have an outside object that acts as your updater.
var updater = {};
function geoCodeCity(goocoord) {
var geocoder = new google.maps.Geocoder();
geocoder.geocode({
'latLng': goocoord
}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
updater.currentLocation = results[1].formatted_address;
} else {
if (status == "ERROR") {
console.log(status);
}
}
});
};
find the installed node version.
$ node --version
or
$ node -v
And if you want more information about installed node(i.e. node version,v8 version,platform,env variables info etc.)
then just do this.
$ node
> process
process {
title: 'node',
version: 'v6.6.0',
moduleLoadList:
[ 'Binding contextify',
'Binding natives',
'NativeModule events',
'NativeModule util',
'Binding uv',
'NativeModule buffer',
'Binding buffer',
'Binding util',
...
where The process object is a global that provides information about, and control over, the current Node.js process.
Get Shared Preferences Color Code in String then Convert to integer and add layout-background color:
sharedPreferences = getSharedPreferences(mypref, Context.MODE_PRIVATE);
String sw=sharedPreferences.getString(name, "");
relativeLayout.setBackgroundColor(Color.parseColor(sw));
this worked for me.
$(document).ready(function () {
$("#datePicker").datetimepicker({
format: 'DD/MM/YYYY HH:mm:ss',
defaultDate: new Date(),
});
}
here are the CDN links
<!-- datetime picker -->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datetimepicker/3.1.4/css/bootstrap-datetimepicker.min.css"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.13.0/moment.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datetimepicker/3.1.4/js/bootstrap-datetimepicker.min.js"></script>
Because it's more common to call range(0, 10)
which returns [0,1,2,3,4,5,6,7,8,9]
which contains 10 elements which equals len(range(0, 10))
. Remember that programmers prefer 0-based indexing.
Also, consider the following common code snippet:
for i in range(len(li)):
pass
Could you see that if range()
went up to exactly len(li)
that this would be problematic? The programmer would need to explicitly subtract 1. This also follows the common trend of programmers preferring for(int i = 0; i < 10; i++)
over for(int i = 0; i <= 9; i++)
.
If you are calling range with a start of 1 frequently, you might want to define your own function:
>>> def range1(start, end):
... return range(start, end+1)
...
>>> range1(1, 10)
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
I guess this is what you want, it does exactly what you specified.
#include<stdio.h>
#include<stdlib.h>
int main(int argc, char** argv) {
int age;
char* buffer;
buffer = malloc(200 * sizeof(char));
sscanf("19 cool kid", "%d cool %s", &age, buffer);
printf("cool %s is %d years old\n", buffer, age);
return 0;
}
The format expects: first a number (and puts it at where &age points to), then whitespace (zero or more), then the literal string "cool", then whitespace (zero or more) again, and then finally a string (and put that at whatever buffer points to). You forgot the "cool" part in your format string, so the format then just assumes that is the string you were wanting to assign to buffer. But you don't want to assign that string, only skip it.
Alternative, you could also have a format string like: "%d %s %s", but then you must assign another buffer for it (with a different name), and print it as: "%s %s is %d years old\n".
You can give like this
public static function getAll()
{
return $posts = $this->all()->take(2)->get();
}
And when you call statically inside your controller function also..
###################################################
###################################################
###################################################
AVOID THIS
###################################################
###################################################
###################################################
/*for (Song s: songList){
System.out.println(s + "," + songList.indexOf(s);
}*/
it is possible in linked list.
you have to make toString() in song class. if you don't it will print out reference of the song.
probably irrelevant for you by now. ^_^
RapidEXE is exactly for this job:
It converts a php project to a standalone exe. I had enough of all other compilers, tried them one by one and they all disappointed me one way or another. Be my guest, feedbacks are always welcome!
Side note: the mechanism behind it is quite similar to the WinRAR SFX approach; extract engine, extract source, then run. It's just faster and easier to work with. One-command compilation, compressed, smart unpack, auto cleanup, easy config, full control of php engine & version; also extensible with minimal effort.
Happy developing!
I had similar problem. Got message in js
Resource interpreted as Document but transferred with MIME type text/csv
But I also got message in chrome console
Mixed Content: The site at 'https://my-site/' was loaded over a secure connection, but the file at 'https://my-site/Download?id=99a50c7b' was redirected through an insecure connection. This file should be served over HTTPS. This download has been blocked
It says here that you need to use an secure connection (but scheme is https in message already, strangely...).
The problem is that href for file downloading builded on server side. And this href used http in my case.
So I changed scheme to https when build href for file downloading.
This still appears to be an issue, causing package installations to be aborted with warnings about optional packages no being installed because of "Unsupported platform".
The problem relates to the "shrinkwrap" or package-lock.json
which gets persisted after every package manager execution. Subsequent attempts keep failing as this file is referenced instead of package.json
.
Adding these options to the npm install
command should allow packages to install again.
--no-optional argument will prevent optional dependencies from being installed.
--no-shrinkwrap argument, which will ignore an available package lock or
shrinkwrap file and use the package.json instead.
--no-package-lock argument will prevent npm from creating a package-lock.json file.
The complete command looks like this:
npm install --no-optional --no-shrinkwrap --no-package-lock
nJoy!
Just as an extra to anyone using the above answers that implement:
ObjectType instance = (ObjectType)Activator.CreateInstance(objectType);
Be careful - if your Constructor isn't "Public" then you will get the following error:
"System.MissingMethodException: 'No parameterless constructor defined for this object."
Your class can be Internal/Friend, or whatever you need but the constructor must be public.
The first is the original for loop. You initialize a variable, set a terminating condition, and provide a state incrementing/decrementing counter (There are exceptions, but this is the classic)
For that,
for (int i=0;i<myString.length;i++) {
System.out.println(myString[i]);
}
is correct.
For Java 5 an alternative was proposed. Any thing that implements iterable can be supported. This is particularly nice in Collections. For example you can iterate the list like this
List<String> list = ....load up with stuff
for (String string : list) {
System.out.println(string);
}
instead of
for (int i=0; i<list.size();i++) {
System.out.println(list.get(i));
}
So it's just an alternative notation really. Any item that implements Iterable (i.e. can return an iterator) can be written that way.
What's happening behind the scenes is somethig like this: (more efficient, but I'm writing it explicitly)
Iterator<String> it = list.iterator();
while (it.hasNext()) {
String string=it.next();
System.out.println(string);
}
In the end it's just syntactic sugar, but rather convenient.
I think, I've found the best tutorial on how to use the RecyclerView with all basic functions we need (single+multiselection, highlight, ripple, click and remove in multiselection, etc...).
Here it is --> http://enoent.fr/blog/2015/01/18/recyclerview-basics/
Based on that, I was able to create a library "FlexibleAdapter", which extends a SelectableAdapter. I think this must be a responsibility of the Adapter, actually you don't need to rewrite the basic functionalities of Adapter every time, let a library to do it, so you can just reuse the same implementation.
This Adapter is very fast, it works out of the box (you don't need to extend it); you customize the items for every view types you need; ViewHolder are predefined: common events are already implemented: single and long click; it maintains the state after rotation and much much more.
Please have a look and feel free to implement it in your projects.
https://github.com/davideas/FlexibleAdapter
A Wiki is also available.
Had the same issue, in the terminal you can type:
export ANDROID_HOME=$HOME/Android/Sdk
or any other location depending on where you installed the sdk.
export PATH=$PATH:$ANDROID_HOME/platform-tools
Hope it helps!
You have created a table with ID
as PRIMARY KEY
, which satisfies UNIQUE
and NOT NULL
constraints, so you can't make the ID
as NULL
by inserting name field, so ID
should also be inserted.
The error message indicates this.
You can use following ways to setup Spark:
Though there are various ways to build Spark from Source.
First I tried building Spark source with SBT but that requires hadoop. To avoid those issues, I used pre-built release.
Instead of Source,I downloaded Prebuilt release for hadoop 2.x version and ran it. For this you need to install Scala as prerequisite.
I have collated all steps here :
How to run Apache Spark on Windows7 in standalone mode
Hope it'll help you..!!!
This will select empty text inputs with an id that starts with "txt":
$(':text[value=""][id^=txt]')
You can use find
find . -type d > output.txt
or tree
tree -d > output.txt
tree
, If not installed on your system.
If you are using ubuntu
sudo apt-get install tree
If you are using mac os
.
brew install tree
As a supplementary, on Amazon EC2, what I need to do is:
sudo yum install freetype-devel
sudo yum install libpng-devel
sudo pip install matplotlib
// logout
if(isset($_GET['logout'])) {
session_destroy();
unset($_SESSION['username']);
header('location:login.php');
}
?>
I solved my problem using entire address where my code is: Before:
if(!exists("foo", mode="function")) source("utils.r")
After:
if(!exists("foo", mode="function")) source("C:/tests/utils.r")
The API return value in my case as shown here:
{
"pageIndex": 1,
"pageSize": 10,
"totalCount": 1,
"totalPageCount": 1,
"items": [
{
"firstName": "Stephen",
"otherNames": "Ebichondo",
"phoneNumber": "+254721250736",
"gender": 0,
"clientStatus": 0,
"dateOfBirth": "1979-08-16T00:00:00",
"nationalID": "21734397",
"emailAddress": "[email protected]",
"id": 1,
"addedDate": "2018-02-02T00:00:00",
"modifiedDate": "2018-02-02T00:00:00"
}
],
"hasPreviousPage": false,
"hasNextPage": false
}
The conversion of the items array to list of clients was handled as shown here:
if (responseMessage.IsSuccessStatusCode)
{
var responseData = responseMessage.Content.ReadAsStringAsync().Result;
JObject result = JObject.Parse(responseData);
var clientarray = result["items"].Value<JArray>();
List<Client> clients = clientarray.ToObject<List<Client>>();
return View(clients);
}
Angular 2 Beta
This answer is for those who use Javascript for angularJS v.2.0 Beta.
To use ngModel
in your view you should tell the angular's compiler that you are using a directive called ngModel
.
How?
To use ngModel
there are two libraries in angular2 Beta, and they are ng.common.FORM_DIRECTIVES
and ng.common.NgModel
.
Actually ng.common.FORM_DIRECTIVES
is nothing but group of directives which are useful when you are creating a form. It includes NgModel
directive also.
app.myApp = ng.core.Component({
selector: 'my-app',
templateUrl: 'App/Pages/myApp.html',
directives: [ng.common.NgModel] // specify all your directives here
}).Class({
constructor: function () {
this.myVar = {};
this.myVar.text = "Testing";
},
});
Try to generate the proxy class via SvcUtil.exe with command
Syntax:
svcutil.exe /language:<type> /out:<name>.cs /config:<name>.config http://<host address>:<port>
Example:
svcutil.exe /language:cs /out:generatedProxy.cs /config:app.config http://localhost:8000/ServiceSamples/myService1
To check if service is available try in your IE URL from example upon without myService1 postfix
var now = DateTime.Now;
var first = new DateTime(now.Year, now.Month, 1);
var last = first.AddMonths(1).AddDays(-1);
You could also use DateTime.DaysInMonth
method:
var last = new DateTime(now.Year, now.Month, DateTime.DaysInMonth(now.Year, now.Month));
Use raw keyword, http://twig.sensiolabs.org/doc/api.html#escaper-extension
{{ word | raw }}
Eloquent has a method for that (Laravel 4.*/5.*);
Model::whereNotNull('sent_at')
Laravel 3:
Model::where_not_null('sent_at')
Instead of doing foreach() loop on the array, it would be faster to use array_search() to find the proper key. On small arrays, I would go with foreach for better readibility, but for bigger arrays, or often executed code, this should be a bit more optimal:
$result=array_search($unwantedValue,$array,true);
if($result !== false) {
unset($array[$result]);
}
The strict comparsion operator !== is needed, because array_search() can return 0 as the index of the $unwantedValue.
Also, the above example will remove just the first value $unwantedValue, if the $unwantedValue can occur more then once in the $array, You should use array_keys(), to find all of them:
$result=array_keys($array,$unwantedValue,true)
foreach($result as $key) {
unset($array[$key]);
}
Check http://php.net/manual/en/function.array-search.php for more information.
I started having this problem after changing the solution a lot, shelving the changes and undoing it.
Only way to solve it was removing and adding again the mapping from TFS to my local folder.
I took AhrB's list, while appended three more files. Here is the full list I have used:
sudo rm -rf /usr/local/lib/node /usr/local/lib/node_modules /var/db/receipts/org.nodejs.*
sudo rm -rf /usr/local/include/node /Users/$USER/.npm
sudo rm /usr/local/bin/node
sudo rm /usr/local/share/man/man1/node.1
sudo rm /usr/local/bin/npm
sudo rm /usr/local/share/systemtap/tapset/node.stp
sudo rm /usr/local/lib/dtrace/node.d
# In case you want to reinstall node with HomeBrew:
# brew install node
Ended up writing something of my own based on UUID.java implementation. Note that I'm not generating a UUID, instead just a random 32 bytes hex string in the most efficient way I could think of.
import java.security.SecureRandom;
import java.util.UUID;
public class RandomUtil {
// Maxim: Copied from UUID implementation :)
private static volatile SecureRandom numberGenerator = null;
private static final long MSB = 0x8000000000000000L;
public static String unique() {
SecureRandom ng = numberGenerator;
if (ng == null) {
numberGenerator = ng = new SecureRandom();
}
return Long.toHexString(MSB | ng.nextLong()) + Long.toHexString(MSB | ng.nextLong());
}
}
RandomUtil.unique()
Some of the inputs I've tested to make sure it's working:
public static void main(String[] args) {
System.out.println(UUID.randomUUID().toString());
System.out.println(RandomUtil.unique());
System.out.println();
System.out.println(Long.toHexString(0x8000000000000000L |21));
System.out.println(Long.toBinaryString(0x8000000000000000L |21));
System.out.println(Long.toHexString(Long.MAX_VALUE + 1));
}
In short: No.
There is a hack, use vector as underlaid container, so queue::front
will return valid reference, convert it to pointer an iterate until <= queue::back
having to pass context around everywhere is really annoying me. the code becomes too verbose and unmanageable. I do this in every project instead...
public class global {
public static Activity globalContext = null;
and set it in the main activity create
@Override
public void onCreate(Bundle savedInstanceState) {
Thread.setDefaultUncaughtExceptionHandler(new CustomExceptionHandler(
global.sdcardPath,
""));
super.onCreate(savedInstanceState);
//Start
//Debug.startMethodTracing("appname.Trace1");
global.globalContext = this;
also all preference keys should be language independent, I'm shocked nobody has mentioned that.
getText(R.string.yourPrefKeyName).toString()
now call it very simply like this in one line of code
global.globalContext.getSharedPreferences(global.APPNAME_PREF, global.MODE_PRIVATE).getBoolean("isMetric", true);
If you want it visually formatted to two decimals as a string (for output) use toFixed()
:
var priceString = someValue.toFixed(2);
The answer by @David has two problems:
It leaves the result as a floating point number, and consequently holds the possibility of displaying a particular result with many decimal places, e.g. 134.1999999999
instead of "134.20"
.
If your value is an integer or rounds to one tenth, you will not see the additional decimal value:
var n = 1.099;
(Math.round( n * 100 )/100 ).toString() //-> "1.1"
n.toFixed(2) //-> "1.10"
var n = 3;
(Math.round( n * 100 )/100 ).toString() //-> "3"
n.toFixed(2) //-> "3.00"
And, as you can see above, using toFixed()
is also far easier to type. ;)
To add class without JQuery just append yourClassName
to your element className
document.documentElement.className += " yourClassName";
To remove class you can use replace()
function
document.documentElement.className.replace(/(?:^|\s)yourClassName(?!\S)/,'');
Also as @DavidThomas mentioned you'd need to use the new RegExp()
constructor if you want to pass class names dynamically to the replace function.
The linefeed character \n
is not the line separator in certain operating systems (such as windows, where it's "\r\n") - my suggestion is that you use \r\n
instead, then it'll both see the line-break with only \n
and \r\n
, I've never had any problems using it.
Also, you should look into using a StringBuilder
instead of concatenating the String
in the while-loop at BookCatalog.toString()
, it is a lot more effective. For instance:
public String toString() {
BookNode current = front;
StringBuilder sb = new StringBuilder();
while (current!=null){
sb.append(current.getData().toString()+"\r\n ");
current = current.getNext();
}
return sb.toString();
}
If you are experiencing this problem when testing and/or debugging the application from the Visual Studio environment (ASP.NET Development Server), it is necessary to delete all temporary files on the development website folder. To know where that folder is, look for the ASP.NET Development Server icon on the Windows tray icon (it should have a title like this: ASP.NET Development Server - Port ####), right click the icon and select Show Details; thn, the field Physical path will tell you what the temporary folder is, all items there should be deleted to solve the problem. Build and run again the website and the problem should be solved (again, solved for the Development Environment).
The thing about collations is that although the database has its own collation, every table, and every column can have its own collation. If not specified it takes the default of its parent object, but can be different.
When you change collation of the database, it will be the new default for all new tables and columns, but it doesn't change the collation of existing objects inside the database. You have to go and change manually the collation of every table and column.
Luckily there are scripts available on the internet that can do the job. I am not going to recommend any as I haven't tried them but here are few links:
http://www.codeproject.com/Articles/302405/The-Easy-way-of-changing-Collation-of-all-Database
Update Collation of all fields in database on the fly
http://www.sqlservercentral.com/Forums/Topic820675-146-1.aspx
If you need to have different collation on two objects or can't change collations - you can still JOIN
between them using COLLATE
command, and choosing the collation you want for join.
SELECT * FROM A JOIN B ON A.Text = B.Text COLLATE Latin1_General_CI_AS
or using default database collation:
SELECT * FROM A JOIN B ON A.Text = B.Text COLLATE DATABASE_DEFAULT
As you can see, 01/01/1970 returns 0, which means it is the lowest possible date.
new Date('1970-01-01Z00:00:00:000') //returns Thu Jan 01 1970 01:00:00 GMT+0100 (Central European Standard Time)
new Date('1970-01-01Z00:00:00:000').getTime() //returns 0
new Date('1970-01-01Z00:00:00:001').getTime() //returns 1
The answer mentioned by @HaNdTriX is a great, but we are not sure if DOM is completely loaded in the below code:
var loadTime = window.performance.timing.domContentLoadedEventEnd- window.performance.timing.navigationStart;
This works perfectly when used with onload as:
window.onload = function () {
var loadTime = window.performance.timing.domContentLoadedEventEnd-window.performance.timing.navigationStart;
console.log('Page load time is '+ loadTime);
}
Edit 1: Added some context to answer
Note: loadTime
is in milliseconds, you can divide by 1000 to get seconds as mentioned by @nycynik
If you are using TortoiseHg you have to perform these three steps shown in the attached screen shot, this would add your credentials for the specific repository you are working with.
To add global settings you can access the file C:\users\user.name\mercurial.ini and add the section
[auth]
bb.prefix=https://bitbucket.org/zambezia/packagemanager
bb.username = $username
bb.password = $password
Hope this helps.
This worked for me:
Note, you can also highlight multiple objects at the same time, so you could generate one script that contains create statements for all tables within the database.
You need to return a view which has a friendly error message to the user
catch (Exception ex)
{
// to do :log error
return View("Error");
}
You should not be showing the internal details of your exception(like exception stacktrace etc) to the user. You should be logging the relevant information to your error log so that you can go through it and fix the issue.
If your request is an ajax request, You may return a JSON response with a proper status flag which client can evaluate and do further actions
[HttpPost]
public ActionResult Create(CustomerVM model)
{
try
{
//save customer
return Json(new { status="success",message="customer created"});
}
catch(Exception ex)
{
//to do: log error
return Json(new { status="error",message="error creating customer"});
}
}
If you want to show the error in the form user submitted, You may use ModelState.AddModelError
method along with the Html helper methods like Html.ValidationSummary
etc to show the error to the user in the form he submitted.
You get the question-mark-diamond characters when your textfile uses high-ANSI encoding -- meaning it uses characters between 127 and 255. Those characters have the eighth (i.e. the most significant) bit set. When ASP.NET reads the textfile it assumes UTF-8 encoding, and that most significant bit has a special meaning.
You must force ASP.NET to interpret the textfile as high-ANSI encoding, by telling it the codepage is 1252:
String textFilePhysicalPath = System.Web.HttpContext.Current.Server.MapPath("~/textfiles/MyInputFile.txt");
String contents = File.ReadAllText(textFilePhysicalPath, System.Text.Encoding.GetEncoding(1252));
lblContents.Text = contents.Replace("\n", "<br />"); // change linebreaks to HTML
wget --no-check-certificate https://www.python.org/ftp/python/2.7.11/Python-2.7.11.tgz
tar -xzf Python-2.7.11.tgz
cd Python-2.7.11
Now read the README
file to figure out how to install, or do the following with no guarantees from me that it will be exactly what you need.
./configure
make
sudo make install
For Python 3.5 use the following download address:
http://www.python.org/ftp/python/3.5.1/Python-3.5.1.tgz
For other versions and the most up to date download links:
http://www.python.org/getit/
If you only need to prevent line-breaks on space characters, you can use
entities between words:
No line break
instead of
<span style="white-space:nowrap">No line break</span>
type this in your command line, should work for all ubuntu between 16.04, 18.04 and 20.04.
$ sudo update-alternatives --config php
and this is what you will get
There are 4 choices for the alternative php (providing /usr/bin/php).
Selection Path Priority Status
------------------------------------------------------------
* 0 /usr/bin/php7.2 72 auto mode
1 /usr/bin/php5.6 56 manual mode
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Choose the appropriate version
Why not grab them from dependencies
in package.json
?
Of course, this will only give you the ones you actually saved, but you should be doing that anyway.
console.log(Object.keys(require('./package.json').dependencies));
Use this:
int get_lines(string file)
{
var lineCount = 0;
using (var stream = new StreamReader(file))
{
while (stream.ReadLine() != null)
{
lineCount++;
}
}
return lineCount;
}
When Object variables are initially used in a language like Java, they have absolutely no value at all - not zero, but literally no value - that is null
For instance: String s;
If you were to use s
, it would actually have a value of null
, because it holds absolute nothing.
An empty string, however, is a value - it is a string of no characters.
String s; //Inits to null
String a =""; //A blank string
Null
is essentially 'nothing' - it's the default 'value' (to use the term loosely) that Java assigns to any Object variable that was not initialized.
Null
isn't really a value - and as such, doesn't have properties. So, calling anything that is meant to return a value - such as .length()
, will invariably return an error, because 'nothing' cannot have properties.
To go into more depth, by creating s1 = "";
you are initializing an object, which can have properties, and takes up relevant space in memory. By using s2;
you are designating that variable name to be a String, but are not actually assigning any value at that point.
I would like to recommend using the scrollTo plugin
http://demos.flesler.com/jquery/scrollTo/
You can the set scrollto by jquery css selector.
$('html,body').scrollTo( $(target), 800 );
I have had great luck with the accuracy of this plugin and its methods, where other methods of achieving the same effect like using .offset()
or .position()
have failed to be cross browser for me in the past. Not saying you can't use such methods, I'm sure there is a way to do it cross browser, I've just found scrollTo to be more reliable.
To answer your question, on Windows, the my.cnf
file may be called my.ini
. MySQL looks for it in the following locations (in this order):
%PROGRAMDATA%\MySQL\MySQL Server 5.7\my.ini
, %PROGRAMDATA%\MySQL\MySQL Server 5.7\my.cnf
%WINDIR%\my.ini
, %WINDIR%\my.cnf
C:\my.ini
, C:\my.cnf
\my.ini
, INSTALLDIR\my.cnf
See also http://dev.mysql.com/doc/refman/5.7/en/option-files.html
Then you can edit the config file and add an entry like this:
[mysqld]
skip-grant-tables
Then restart the MySQL Service and you can log in and do what you need to do. Of course you want to disable that entry in the config file as soon as possible!
See also http://dev.mysql.com/doc/refman/5.7/en/resetting-permissions.html
The other answers cover what it is quite well. I'm not repeating that. Just some points that might be useful to you.
Usually, memoisation is an operation you can apply on any function that computes something (expensive) and returns a value. Because of this, it's often implemented as a decorator. The implementation is straightforward and it would be something like this
memoised_function = memoise(actual_function)
or expressed as a decorator
@memoise
def actual_function(arg1, arg2):
#body
This link should satisfy your curiosity.
Basically (forgetting your third example which is bad), the different between 1 and 2 is that 1 allocates space for a pointer to the array.
But in the code, you can manipulate them as pointers all the same -- only thing, you cannot reallocate the second.
Consider:
Function GetFolder() As String
Dim fldr As FileDialog
Dim sItem As String
Set fldr = Application.FileDialog(msoFileDialogFolderPicker)
With fldr
.Title = "Select a Folder"
.AllowMultiSelect = False
.InitialFileName = Application.DefaultFilePath
If .Show <> -1 Then GoTo NextCode
sItem = .SelectedItems(1)
End With
NextCode:
GetFolder = sItem
Set fldr = Nothing
End Function
This code was adapted from Ozgrid
and as jkf points out, from Mr Excel
To open in a new windows with dimensions and everything, you will need to call a JavaScript function, as target="_blank" won't let you adjust sizes. An example would be:
<a href="http://www.facebook.com/sharer" onclick="window.open(this.href, 'mywin',
'left=20,top=20,width=500,height=500,toolbar=1,resizable=0'); return false;" >Share this</a>
Hope this helps you.
foreach ($parsed as $key=> $poke)
{
$insert = mysql_query("insert into soal
(pertanyaan, a, b, c, d, e, jawaban)
values
('$poke[question]',
'$poke[options][A]',
'$poke[options][B]',
'$poke[options][C]',
'$poke[options][D]',
'$poke[options][E]',
'$poke[answer]')");
}
This seems a bit easier then the above suggestions because it uses the OBJECT_ID() function to locate the table's id. Any column with that id is part of the table.
SELECT *
FROM syscolumns
WHERE id=OBJECT_ID('YOUR_TABLE')
I commonly use a similar query to see if a column I know is part of a newer version is present. It is the same query with the addition of {AND name='YOUR_COLUMN'} to the where clause.
IF EXISTS (
SELECT *
FROM syscolumns
WHERE id=OBJECT_ID('YOUR_TABLE')
AND name='YOUR_COLUMN'
)
BEGIN
PRINT 'Column found'
END
I found this example quite helpful:
https://github.com/visionmedia/express/blob/master/examples/error-pages/index.js
So it is actually this part:
// "app.router" positions our routes
// above the middleware defined below,
// this means that Express will attempt
// to match & call routes _before_ continuing
// on, at which point we assume it's a 404 because
// no route has handled the request.
app.use(app.router);
// Since this is the last non-error-handling
// middleware use()d, we assume 404, as nothing else
// responded.
// $ curl http://localhost:3000/notfound
// $ curl http://localhost:3000/notfound -H "Accept: application/json"
// $ curl http://localhost:3000/notfound -H "Accept: text/plain"
app.use(function(req, res, next){
res.status(404);
// respond with html page
if (req.accepts('html')) {
res.render('404', { url: req.url });
return;
}
// respond with json
if (req.accepts('json')) {
res.send({ error: 'Not found' });
return;
}
// default to plain-text. send()
res.type('txt').send('Not found');
});
Updated 2018
Make sure your table includes the table
class. This is because Bootstrap 4 tables are "opt-in" so the table
class must be intentionally added to the table.
http://codeply.com/go/zJLXypKZxL
Bootstrap 3.x also had some CSS to reset the table cells so that they don't float..
table td[class*=col-], table th[class*=col-] {
position: static;
display: table-cell;
float: none;
}
I don't know why this isn't is Bootstrap 4 alpha, but it may be added back in the final release. Adding this CSS will help all columns to use the widths set in the thead
..
UPDATE (as of Bootstrap 4.0.0)
Now that Bootstrap 4 is flexbox, the table cells will not assume the correct width when adding col-*
. A workaround is to use the d-inline-block
class on the table cells to prevent the default display:flex of columns.
Another option in BS4 is to use the sizing utils classes for width...
<thead>
<tr>
<th class="w-25">25</th>
<th class="w-50">50</th>
<th class="w-25">25</th>
</tr>
</thead>
Lastly, you could use d-flex
on the table rows (tr), and the col-*
grid classes on the columns (th,td)...
<table class="table table-bordered">
<thead>
<tr class="d-flex">
<th class="col-3">25%</th>
<th class="col-3">25%</th>
<th class="col-6">50%</th>
</tr>
</thead>
<tbody>
<tr class="d-flex">
<td class="col-sm-3">..</td>
<td class="col-sm-3">..</td>
<td class="col-sm-6">..</td>
</tr>
</tbody>
</table>
Note: Changing the TR to display:flex can alter the borders
Quick way to print something is:
select '** Place your mesage here' AS '** DEBUG:';
Declarations of public functions go in header files, yes, but definitions are absolutely valid in headers as well! You may declare the definition as static (only 1 copy allowed for the entire program) if you are defining things in a header for utility functions that you don't want to have to define again in each c file. I.E. defining an enum and a static function to translate the enum to a string. Then you won't have to rewrite the enum to string translator for each .c file that includes the header. :)
The problem here is your user doesn't have proper rights/permissions to open the file this means that you'd need to grant some administrative privileges to your python ide before you run that command.
As you are a windows user you just need to right click on python ide => select option 'Run as Administrator' and then run your command.
And if you are using the command line to run the codes, do the same open the command prompt with admin rights. Hope it helps
I found the answer on the web:
Dim fsT As Object
Set fsT = CreateObject("ADODB.Stream")
fsT.Type = 2 'Specify stream type - we want To save text/string data.
fsT.Charset = "utf-8" 'Specify charset For the source text data.
fsT.Open 'Open the stream And write binary data To the object
fsT.WriteText "special characters: äöüß"
fsT.SaveToFile sFileName, 2 'Save binary data To disk
Certainly not as I expected...
The wiki is talking from a forked repo point of view. You have access to pull and push from origin, which will be your fork of the main diaspora repo. To pull in changes from this main repo, you add a remote, "upstream" in your local repo, pointing to this original and pull from it.
So "origin" is a clone of your fork repo, from which you push and pull. "Upstream" is a name for the main repo, from where you pull and keep a clone of your fork updated, but you don't have push access to it.
Do you have times associated with your dates? BETWEEN is inclusive, but when you convert 2013-10-18 to a date it becomes 2013-10-18 00:00:000.00. Anything that is logged after the first second of the 18th will not shown using BETWEEN, unless you include a time value.
Try:
SELECT * FROM LOGS WHERE CHECK_IN BETWEEN CONVERT(datetime,'2013-10-17') AND CONVERT(datetime,'2013-10-18 23:59:59:999')
if you want to search the entire day of the 18th.
SQL DATETIME fields have milliseconds. So I added 999 to the field.
<HTML>
<HEAD>
<SCRIPT language=Javascript>
function isNumberKey(evt)
{
var charCode = (evt.which) ? evt.which : evt.keyCode;
if (charCode > 31 && (charCode < 48 || charCode > 57))
return false;
return true;
}
</SCRIPT>
</HEAD>
<BODY>
<INPUT id="txtChar" onkeypress="return isNumberKey(event)" type="text" name="txtChar">
</BODY>
</HTML>
What's dumpsys and what are its benefit
dumpsys is an android tool that runs on the device and dumps interesting information about the status of system services.
Obvious benefits:
What information can we retrieve from dumpsys shell command and how we can use it
If you run dumpsys you would see a ton of system information. But you can use only separate parts of this big dump.
to see all of the "subcommands" of dumpsys do:
dumpsys | grep "DUMP OF SERVICE"
Output:
DUMP OF SERVICE SurfaceFlinger:
DUMP OF SERVICE accessibility:
DUMP OF SERVICE account:
DUMP OF SERVICE activity:
DUMP OF SERVICE alarm:
DUMP OF SERVICE appwidget:
DUMP OF SERVICE audio:
DUMP OF SERVICE backup:
DUMP OF SERVICE battery:
DUMP OF SERVICE batteryinfo:
DUMP OF SERVICE clipboard:
DUMP OF SERVICE connectivity:
DUMP OF SERVICE content:
DUMP OF SERVICE cpuinfo:
DUMP OF SERVICE device_policy:
DUMP OF SERVICE devicestoragemonitor:
DUMP OF SERVICE diskstats:
DUMP OF SERVICE dropbox:
DUMP OF SERVICE entropy:
DUMP OF SERVICE hardware:
DUMP OF SERVICE input_method:
DUMP OF SERVICE iphonesubinfo:
DUMP OF SERVICE isms:
DUMP OF SERVICE location:
DUMP OF SERVICE media.audio_flinger:
DUMP OF SERVICE media.audio_policy:
DUMP OF SERVICE media.player:
DUMP OF SERVICE meminfo:
DUMP OF SERVICE mount:
DUMP OF SERVICE netstat:
DUMP OF SERVICE network_management:
DUMP OF SERVICE notification:
DUMP OF SERVICE package:
DUMP OF SERVICE permission:
DUMP OF SERVICE phone:
DUMP OF SERVICE power:
DUMP OF SERVICE reboot:
DUMP OF SERVICE screenshot:
DUMP OF SERVICE search:
DUMP OF SERVICE sensor:
DUMP OF SERVICE simphonebook:
DUMP OF SERVICE statusbar:
DUMP OF SERVICE telephony.registry:
DUMP OF SERVICE throttle:
DUMP OF SERVICE usagestats:
DUMP OF SERVICE vibrator:
DUMP OF SERVICE wallpaper:
DUMP OF SERVICE wifi:
DUMP OF SERVICE window:
Some Dumping examples and output
1) Getting all possible battery statistic:
$~ adb shell dumpsys battery
You will get output:
Current Battery Service state:
AC powered: false
AC capacity: 500000
USB powered: true
status: 5
health: 2
present: true
level: 100
scale: 100
voltage:4201
temperature: 271 <---------- Battery temperature! %)
technology: Li-poly <---------- Battery technology! %)
2)Getting wifi informations
~$ adb shell dumpsys wifi
Output:
Wi-Fi is enabled
Stay-awake conditions: 3
Internal state:
interface tiwlan0 runState=Running
SSID: XXXXXXX BSSID: xx:xx:xx:xx:xx:xx, MAC: xx:xx:xx:xx:xx:xx, Supplicant state: COMPLETED, RSSI: -60, Link speed: 54, Net ID: 2, security: 0, idStr: null
ipaddr 192.168.1.xxx gateway 192.168.x.x netmask 255.255.255.0 dns1 192.168.x.x dns2 8.8.8.8 DHCP server 192.168.x.x lease 604800 seconds
haveIpAddress=true, obtainingIpAddress=false, scanModeActive=false
lastSignalLevel=2, explicitlyDisabled=false
Latest scan results:
Locks acquired: 28 full, 0 scan
Locks released: 28 full, 0 scan
Locks held:
3) Getting CPU info
~$ adb shell dumpsys cpuinfo
Output:
Load: 0.08 / 0.4 / 0.64
CPU usage from 42816ms to 34683ms ago:
system_server: 1% = 1% user + 0% kernel / faults: 16 minor
kdebuglog.sh: 0% = 0% user + 0% kernel / faults: 160 minor
tiwlan_wq: 0% = 0% user + 0% kernel
usb_mass_storag: 0% = 0% user + 0% kernel
pvr_workqueue: 0% = 0% user + 0% kernel
+sleep: 0% = 0% user + 0% kernel
+sleep: 0% = 0% user + 0% kernel
TOTAL: 6% = 1% user + 3% kernel + 0% irq
4)Getting memory usage informations
~$ adb shell dumpsys meminfo 'your apps package name'
Output:
** MEMINFO in pid 5527 [com.sec.android.widgetapp.weatherclock] **
native dalvik other total
size: 2868 5767 N/A 8635
allocated: 2861 2891 N/A 5752
free: 6 2876 N/A 2882
(Pss): 532 80 2479 3091
(shared dirty): 932 2004 6060 8996
(priv dirty): 512 36 1872 2420
Objects
Views: 0 ViewRoots: 0
AppContexts: 0 Activities: 0
Assets: 3 AssetManagers: 3
Local Binders: 2 Proxy Binders: 8
Death Recipients: 0
OpenSSL Sockets: 0
SQL
heap: 0 MEMORY_USED: 0
PAGECACHE_OVERFLOW: 0 MALLOC_SIZE: 0
If you want see the info for all processes, use ~$ adb shell dumpsys meminfo
dumpsys is ultimately flexible and useful tool!
If you want to use this tool do not forget to add permission into your android manifest automatically android.permission.DUMP
Try to test all commands to learn more about dumpsys. Happy dumping!
In short, services set to Automatic will start during the boot process, while services set to start as Delayed will start shortly after boot.
Starting your service Delayed improves the boot performance of your server and has security benefits which are outlined in the article Adriano linked to in the comments.
Update: "shortly after boot" is actually 2 minutes after the last "automatic" service has started, by default. This can be configured by a registry key, according to Windows Internals and other sources (3,4).
The registry keys of interest (At least in some versions of windows) are:
HKLM\SYSTEM\CurrentControlSet\services\<service name>\DelayedAutostart
will have the value 1
if delayed, 0
if not.HKLM\SYSTEM\CurrentControlSet\services\AutoStartDelay
or HKLM\SYSTEM\CurrentControlSet\Control\AutoStartDelay
(on Windows 10): decimal number of seconds to wait, may need to create this one. Applies globally to all Delayed services.I tried the following; it helped me. I hope it help you also.
cd /c/xampp/your-project
Have to add this based on @Joseph's answer. If someone want to create image object:
var image = new Image();
image.onload = function(){
console.log(image.width); // image is loaded and we have image width
}
image.src = 'data:image/png;base64,iVBORw0K...';
document.body.appendChild(image);
Note: it is invalid to provide percentages directly as <img>
width
or height
attribute unless you're using HTML 4.01 (see current spec, obsolete spec and this answer for more details). That being said, browsers will often tolerate such behaviour to support backwards-compatibility.
Those percentage widths in your 2nd example are actually applying to the container your <img>
is in, and not the image's actual size. Say you have the following markup:
<div style="width: 1000px; height: 600px;">
<img src="#" width="50%" height="50%">
</div>
Your resulting image will be 500px wide and 300px tall.
jQuery Resize
If you're trying to reduce an image to 50% of its width, you can do it with a snippet of jQuery:
$( "img" ).each( function() {
var $img = $( this );
$img.width( $img.width() * .5 );
});
Just make sure you take off any height/width = 50% attributes first.
var month = 0; // January
var d = new Date(2008, month + 1, 0);
alert(d); // last day in January
IE 6: Thu Jan 31 00:00:00 CST 2008
IE 7: Thu Jan 31 00:00:00 CST 2008
IE 8: Beta 2: Thu Jan 31 00:00:00 CST 2008
Opera 8.54: Thu, 31 Jan 2008 00:00:00 GMT-0600
Opera 9.27: Thu, 31 Jan 2008 00:00:00 GMT-0600
Opera 9.60: Thu Jan 31 2008 00:00:00 GMT-0600
Firefox 2.0.0.17: Thu Jan 31 2008 00:00:00 GMT-0600 (Canada Central Standard Time)
Firefox 3.0.3: Thu Jan 31 2008 00:00:00 GMT-0600 (Canada Central Standard Time)
Google Chrome 0.2.149.30: Thu Jan 31 2008 00:00:00 GMT-0600 (Canada Central Standard Time)
Safari for Windows 3.1.2: Thu Jan 31 2008 00:00:00 GMT-0600 (Canada Central Standard Time)
Output differences are due to differences in the toString()
implementation, not because the dates are different.
Of course, just because the browsers identified above use 0 as the last day of the previous month does not mean they will continue to do so, or that browsers not listed will do so, but it lends credibility to the belief that it should work the same way in every browser.
With the new C++ standard (may need special flags to be enabled on your compiler) you can simply do:
std::vector<int> v { 34,23 };
// or
// std::vector<int> v = { 34,23 };
Or even:
std::vector<int> v(2);
v = { 34,23 };
On compilers that don't support this feature (initializer lists) yet you can emulate this with an array:
int vv[2] = { 12,43 };
std::vector<int> v(&vv[0], &vv[0]+2);
Or, for the case of assignment to an existing vector:
int vv[2] = { 12,43 };
v.assign(&vv[0], &vv[0]+2);
Like James Kanze suggested, it's more robust to have functions that give you the beginning and end of an array:
template <typename T, size_t N>
T* begin(T(&arr)[N]) { return &arr[0]; }
template <typename T, size_t N>
T* end(T(&arr)[N]) { return &arr[0]+N; }
And then you can do this without having to repeat the size all over:
int vv[] = { 12,43 };
std::vector<int> v(begin(vv), end(vv));
You should append to the table and not the rows.
<script type="text/javascript">
$('a').click(function() {
$('#myTable').append('<tr class="child"><td>blahblah<\/td></tr>');
});
</script>
Don't know if this will be everybody's answer, but after some digging, here's what we came up with.
The error is obviously caused by the fact that the listener was not accepting connections, but why would we get that error when other tests could connect fine (we could also connect no problem through sqlplus)? The key to the issue wasn't that we couldn't connect, but that it was intermittent
After some investigation, we found that there was some static data created during the class setup that would keep open connections for the life of the test class, creating new ones as it went. Now, even though all of the resources were properly released when this class went out of scope (via a finally{} block, of course), there were some cases during the run when this class would swallow up all available connections (okay, bad practice alert - this was unit test code that connected directly rather than using a pool, so the same problem could not happen in production).
The fix was to not make that class static and run in the class setup, but instead use it in the per method setUp and tearDown methods.
So if you get this error in your own apps, slap a profiler on that bad boy and see if you might have a connection leak. Hope that helps.
Does not work with Tables, only functions etc.
Here is a site with some examples.
Looks like your IndexPartial
action method has an argument which is a complex object. If you are passing a a lot of data (complex object), It might be a good idea to convert your action method to a HttpPost
action method and use jQuery post
to post data to that. GET has limitation on the query string value.
[HttpPost]
public PartialViewResult IndexPartial(DashboardViewModel m)
{
//May be you want to pass the posted model to the parial view?
return PartialView("_IndexPartial");
}
Your script should be
var url = "@Url.Action("IndexPartial","YourControllerName")";
var model = { Name :"Shyju", Location:"Detroit"};
$.post(url, model, function(res){
//res contains the markup returned by the partial view
//You probably want to set that to some Div.
$("#SomeDivToShowTheResult").html(res);
});
Assuming Name
and Location
are properties of your DashboardViewModel
class and SomeDivToShowTheResult
is the id of a div in your page where you want to load the content coming from the partialview.
You can build more complex object in js if you want. Model binding will work as long as your structure matches with the viewmodel class
var model = { Name :"Shyju",
Location:"Detroit",
Interests : ["Code","Coffee","Stackoverflow"]
};
$.ajax({
type: "POST",
data: JSON.stringify(model),
url: url,
contentType: "application/json"
}).done(function (res) {
$("#SomeDivToShowTheResult").html(res);
});
For the above js model to be transformed to your method parameter, Your View Model should be like this.
public class DashboardViewModel
{
public string Name {set;get;}
public string Location {set;get;}
public List<string> Interests {set;get;}
}
And in your action method, specify [FromBody]
[HttpPost]
public PartialViewResult IndexPartial([FromBody] DashboardViewModel m)
{
return PartialView("_IndexPartial",m);
}
Why not follow the prevalent trend of database table names, where a singular form is generally accepted? Been there, done that -- let's reuse.
Some answers are slightly incorrect and point to the wrong part of the docs:
If you want a component to render nothing, just return null
, as per doc:
In rare cases you might want a component to hide itself even though it was rendered by another component. To do this return null instead of its render output.
If you try to return undefined
for example, you'll get the following error:
Nothing was returned from render. This usually means a return statement is missing. Or, to render nothing, return null.
As pointed out by other answers, null
, true
, false
and undefined
are valid children which is useful for conditional rendering inside your jsx, but it you want your component to hide / render nothing, just return null
.
Simple way to deal with merging single array values.
var values[0] = {"id":1235,"name":"value 1"}
values[1] = {"id":4323,"name":"value 2"}
var object=null;
var first=values[0];
for (var i in values)
if(i>0)
object= $.merge(values[i],first)
In my case, the issue was that Oracle was installing it to a different location than I was used to.
Download from Oracle: http://java.com/en/download/mac_download.jsp?locale=en
Verify that it's installed properly by looking in System Prefs:
Verify that the version is as you expect (sub in your path as needed):
/Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/bin/java -version
Create link from /usr/bin/java to your new install
sudo ln -fs /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/bin/java /usr/bin/java
Sanity check your version:
java -version
Another possible way could be using conda and pip. Some time you probably want to use just one of those, but if you really need to set up a particular version of python I combine both.
I create a starting conda enviroment with the python I want. As in here https://docs.conda.io/projects/conda/en/latest/user-guide/tasks/manage-environments.html. Alternatively you could set up the whole enviroment just using conda.
conda create -n myenv python=3.6.4
Then activate your enviroment with the python you like. This command could change depending on the OS.
source activae myenv
Now you have your python active then you could continue using conda but if you need/want to use pip:
python -m pip -r requirements.txt
Here you have a possible way.
I had a similar problem, but I only needed the bytes from the file. I read through links provided in the various answers, and ultimately tried writing one similar to #5 in Evgeniy's answer. They weren't kidding, it took a lot of code.
The basic premise is that each line of text is of unknown length. I will start with a SeekableByteChannel, read data into a ByteBuffer, then loop over it looking for EOL. When something is a "carryover" between loops, it increments a counter and then ultimately moves the SeekableByteChannel position around and reads the entire buffer.
It is verbose ... but it works. It was plenty fast for what I needed, but I'm sure there are more improvements that can be made.
The process method is stripped down to the basics for kicking off reading the file.
private long startOffset;
private long endOffset;
private SeekableByteChannel sbc;
private final ByteBuffer buffer = ByteBuffer.allocateDirect(1024);
public void process() throws IOException
{
startOffset = 0;
sbc = Files.newByteChannel(FILE, EnumSet.of(READ));
byte[] message = null;
while((message = readRecord()) != null)
{
// do something
}
}
public byte[] readRecord() throws IOException
{
endOffset = startOffset;
boolean eol = false;
boolean carryOver = false;
byte[] record = null;
while(!eol)
{
byte data;
buffer.clear();
final int bytesRead = sbc.read(buffer);
if(bytesRead == -1)
{
return null;
}
buffer.flip();
for(int i = 0; i < bytesRead && !eol; i++)
{
data = buffer.get();
if(data == '\r' || data == '\n')
{
eol = true;
endOffset += i;
if(carryOver)
{
final int messageSize = (int)(endOffset - startOffset);
sbc.position(startOffset);
final ByteBuffer tempBuffer = ByteBuffer.allocateDirect(messageSize);
sbc.read(tempBuffer);
tempBuffer.flip();
record = new byte[messageSize];
tempBuffer.get(record);
}
else
{
record = new byte[i];
// Need to move the buffer position back since the get moved it forward
buffer.position(0);
buffer.get(record, 0, i);
}
// Skip past the newline characters
if(isWindowsOS())
{
startOffset = (endOffset + 2);
}
else
{
startOffset = (endOffset + 1);
}
// Move the file position back
sbc.position(startOffset);
}
}
if(!eol && sbc.position() == sbc.size())
{
// We have hit the end of the file, just take all the bytes
record = new byte[bytesRead];
eol = true;
buffer.position(0);
buffer.get(record, 0, bytesRead);
}
else if(!eol)
{
// The EOL marker wasn't found, continue the loop
carryOver = true;
endOffset += bytesRead;
}
}
// System.out.println(new String(record));
return record;
}
Start pgAdmin, connect to the server, click on the database name, and select the statistics tab. You will see the size of the database at the bottom of the list.
Then if you click on another database, it stays on the statistics tab so you can easily see many database sizes without much effort. If you open the table list, it shows all tables and their sizes.
You can create table variables:
DECLARE @result1 TABLE (a INT, b INT, c INT)
INSERT INTO @result1
SELECT a, b, c
FROM table1
SELECT a AS val FROM @result1
UNION
SELECT b AS val FROM @result1
UNION
SELECT c AS val FROM @result1
This should be fine for what you need.
Thank you @user1909426, I can found solution by php artisan list
it will list all command that was used on L4. It can create controller only not Model. I follow this command to generate controller.
php artisan controller:make [Name]Controller
On Laravel 5, the command has changed:
php artisan make:controller [Name]Controller
Note: [Name] name of controller
The border-radius property is supported in IE9+, Firefox 4+, Chrome, Safari 5+, and Opera, because it is CSS3 property. so, you could use css3pie
first check this demo in IE 8 and download it from here write your css rule like this
#myAwesomeElement {
border: 1px solid #999;
-webkit-border-radius: 10px;
-moz-border-radius: 10px;
border-radius: 10px;
behavior: url(path/to/pie_files/PIE.htc);
}
note: added behavior: url(path/to/pie_files/PIE.htc);
in the above rule. within url() you need to specify your PIE.htc file location
function parseQuery(queryString) {
var query = {};
var pairs = (queryString[0] === '?' ? queryString.substr(1) : queryString).split('&');
for (var i = 0; i < pairs.length; i++) {
var pair = pairs[i].split('=');
query[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1] || '');
}
return query;
}
Turns query string like hello=1&another=2
into object {hello: 1, another: 2}
. From there, it's easy to extract the variable you need.
That said, it does not deal with array cases such as "hello=1&hello=2&hello=3"
. To work with this, you must check whether a property of the object you make exists before adding to it, and turn the value of it into an array, pushing any additional bits.
You need to use a group by clause.
SELECT site_id, MAX(ts) as TIME, count(*) group by site_id
Because the model that gets posted to the WebApi controller is detached from any entity-framework (EF) context, the only option is to load the object graph (parent including its children) from the database and compare which children have been added, deleted or updated. (Unless you would track the changes with your own tracking mechanism during the detached state (in the browser or wherever) which in my opinion is more complex than the following.) It could look like this:
public void Update(UpdateParentModel model)
{
var existingParent = _dbContext.Parents
.Where(p => p.Id == model.Id)
.Include(p => p.Children)
.SingleOrDefault();
if (existingParent != null)
{
// Update parent
_dbContext.Entry(existingParent).CurrentValues.SetValues(model);
// Delete children
foreach (var existingChild in existingParent.Children.ToList())
{
if (!model.Children.Any(c => c.Id == existingChild.Id))
_dbContext.Children.Remove(existingChild);
}
// Update and Insert children
foreach (var childModel in model.Children)
{
var existingChild = existingParent.Children
.Where(c => c.Id == childModel.Id && c.Id != default(int))
.SingleOrDefault();
if (existingChild != null)
// Update child
_dbContext.Entry(existingChild).CurrentValues.SetValues(childModel);
else
{
// Insert child
var newChild = new Child
{
Data = childModel.Data,
//...
};
existingParent.Children.Add(newChild);
}
}
_dbContext.SaveChanges();
}
}
...CurrentValues.SetValues
can take any object and maps property values to the attached entity based on the property name. If the property names in your model are different from the names in the entity you can't use this method and must assign the values one by one.
I had to login as the owner and go to Settings -> Apps, then swipe to the All tab. Scroll down to the very end of the list where the old versions are listed with a mark 'not installed'. Select it and press the 'settings' button in the top right corner and finally 'uninstall for all users'
When using regular expressions from RegexBuddy's library, make sure to use the same matching modes in your own code as the regex from the library. If you generate a source code snippet on the Use tab, RegexBuddy will automatically set the correct matching options in the source code snippet. If you copy/paste the regex, you have to do that yourself.
In this case, as others pointed out, you missed the case insensitivity option.
If you have a lot of files in the directory then glob2
might be a better option to generate a list of filenames rather than writing them by hand.
import glob2
filenames = glob2.glob('*.txt') # list of all .txt files in the directory
with open('outfile.txt', 'w') as f:
for file in filenames:
with open(file) as infile:
f.write(infile.read()+'\n')
For reading a file with Java 8
package com.java.java8;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.stream.Stream;
/**
* The Class ReadLargeFile.
*
* @author Ankit Sood Apr 20, 2017
*/
public class ReadLargeFile {
/**
* The main method.
*
* @param args
* the arguments
*/
public static void main(String[] args) {
try {
Stream<String> stream = Files.lines(Paths.get("C:\\Users\\System\\Desktop\\demoData.txt"));
stream.forEach(System.out::println);
}
catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
Basically, there isn't one. Embedded refers to the hosting computer / microcontroller, not the language. The embeddded system might have fewer resources and interfaces for the programmer to play with, and hence C will be used differently, but it is still the same ISO defined language.
public static bool Contains(this string input, string findMe, StringComparison comparisonType)
{
return String.IsNullOrWhiteSpace(input) ? false : input.IndexOf(findMe, comparisonType) > -1;
}
I found these two links very helpful while I was trying to learn socket.io:
I needed to solve similar problem (filtering rows by distance from single point) and by combining original question with answers and comments, I came up with solution which perfectly works for me on both MySQL 5.6 and 5.7.
SELECT
*,
(6371 * ACOS(COS(RADIANS(56.946285)) * COS(RADIANS(Y(coordinates)))
* COS(RADIANS(X(coordinates)) - RADIANS(24.105078)) + SIN(RADIANS(56.946285))
* SIN(RADIANS(Y(coordinates))))) AS distance
FROM places
WHERE MBRContains
(
LineString
(
Point (
24.105078 + 15 / (111.320 * COS(RADIANS(56.946285))),
56.946285 + 15 / 111.133
),
Point (
24.105078 - 15 / (111.320 * COS(RADIANS(56.946285))),
56.946285 - 15 / 111.133
)
),
coordinates
)
HAVING distance < 15
ORDER By distance
coordinates
is field with type POINT
and has SPATIAL
index
6371
is for calculating distance in kilometres
56.946285
is latitude for central point
24.105078
is longitude for central point
15
is maximum distance in kilometers
In my tests, MySQL uses SPATIAL index on coordinates
field to quickly select all rows which are within rectangle and then calculates actual distance for all filtered places to exclude places from rectangles corners and leave only places inside circle.
This is visualisation of my result:
Gray stars visualise all points on map, yellow stars are ones returned by MySQL query. Gray stars inside corners of rectangle (but outside circle) were selected by MBRContains()
and then deselected by HAVING
clause.
Write editTextBackground.xml in drawable folder in resources
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<stroke
android:width="1dp"
android:color="@color/borderColor" />
</shape>
don't forget to declare color in resources named borderColor
.
and assign this background to the EditText
in xml background attribute
<EditText
android:id="@+id/text"
android:background="@drawable/editTextBackground"
/>
and it'll set border to EditText
.
You can change border of edit text without drawable by using style
attribute
style="@style/Widget.AppCompat.EditText"
for more details visit customize edit text
"banana".count("ana")
returns 1 instead of 2 !
I think the method iterates over the string (or the list) with a step equal to the length of the substring so it doesn't see this kind of stuff.
So if you want a "full count" you have to implement your own counter with the correct loop of step 1
Correct me if I'm wrong...
//Client
import java.io.*;
import java.net.*;
public class Client {
public static void main(String[] args) {
String hostname = "localhost";
int port = 6789;
// declaration section:
// clientSocket: our client socket
// os: output stream
// is: input stream
Socket clientSocket = null;
DataOutputStream os = null;
BufferedReader is = null;
// Initialization section:
// Try to open a socket on the given port
// Try to open input and output streams
try {
clientSocket = new Socket(hostname, port);
os = new DataOutputStream(clientSocket.getOutputStream());
is = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
} catch (UnknownHostException e) {
System.err.println("Don't know about host: " + hostname);
} catch (IOException e) {
System.err.println("Couldn't get I/O for the connection to: " + hostname);
}
// If everything has been initialized then we want to write some data
// to the socket we have opened a connection to on the given port
if (clientSocket == null || os == null || is == null) {
System.err.println( "Something is wrong. One variable is null." );
return;
}
try {
while ( true ) {
System.out.print( "Enter an integer (0 to stop connection, -1 to stop server): " );
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String keyboardInput = br.readLine();
os.writeBytes( keyboardInput + "\n" );
int n = Integer.parseInt( keyboardInput );
if ( n == 0 || n == -1 ) {
break;
}
String responseLine = is.readLine();
System.out.println("Server returns its square as: " + responseLine);
}
// clean up:
// close the output stream
// close the input stream
// close the socket
os.close();
is.close();
clientSocket.close();
} catch (UnknownHostException e) {
System.err.println("Trying to connect to unknown host: " + e);
} catch (IOException e) {
System.err.println("IOException: " + e);
}
}
}
//Server
import java.io.*;
import java.net.*;
public class Server1 {
public static void main(String args[]) {
int port = 6789;
Server1 server = new Server1( port );
server.startServer();
}
// declare a server socket and a client socket for the server
ServerSocket echoServer = null;
Socket clientSocket = null;
int port;
public Server1( int port ) {
this.port = port;
}
public void stopServer() {
System.out.println( "Server cleaning up." );
System.exit(0);
}
public void startServer() {
// Try to open a server socket on the given port
// Note that we can't choose a port less than 1024 if we are not
// privileged users (root)
try {
echoServer = new ServerSocket(port);
}
catch (IOException e) {
System.out.println(e);
}
System.out.println( "Waiting for connections. Only one connection is allowed." );
// Create a socket object from the ServerSocket to listen and accept connections.
// Use Server1Connection to process the connection.
while ( true ) {
try {
clientSocket = echoServer.accept();
Server1Connection oneconnection = new Server1Connection(clientSocket, this);
oneconnection.run();
}
catch (IOException e) {
System.out.println(e);
}
}
}
}
class Server1Connection {
BufferedReader is;
PrintStream os;
Socket clientSocket;
Server1 server;
public Server1Connection(Socket clientSocket, Server1 server) {
this.clientSocket = clientSocket;
this.server = server;
System.out.println( "Connection established with: " + clientSocket );
try {
is = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
os = new PrintStream(clientSocket.getOutputStream());
} catch (IOException e) {
System.out.println(e);
}
}
public void run() {
String line;
try {
boolean serverStop = false;
while (true) {
line = is.readLine();
System.out.println( "Received " + line );
int n = Integer.parseInt(line);
if ( n == -1 ) {
serverStop = true;
break;
}
if ( n == 0 ) break;
os.println("" + n*n );
}
System.out.println( "Connection closed." );
is.close();
os.close();
clientSocket.close();
if ( serverStop ) server.stopServer();
} catch (IOException e) {
System.out.println(e);
}
}
}
My guess is that you have to also style the views that are generated from the menu information in your onCreateOptionsMenu(). The styling you applied so far is working, but I doubt that the menu items, when rendered with text use a style that is the same as the title part of the ActionBar.
You may want to look at Menu.getActionView() to get the view for the menu action and then adjust it accordingly.
Well, the "failure sending e-mail" should hopefully have a bit more detail. But there are a few things that could cause this.
Regardless if it is one of these or another error, you will want to look at the exception and inner exception to get a bit more detail.
Use %03d
in the format specifier for the integer. The 0
means that the number will be zero-filled if it is less than three (in this case) digits.
See the Formatter
docs for other modifiers.
Function can be used within a sql statement whereas procedure cannot be used within a sql statement.
Insert, Update and Create statements cannot be included in function but a procedure can have these statements.
Procedure supports transactions but functions do not support transactions.
Function has to return one and only one value (another can be returned by OUT variable) but procedure returns as many data sets and return values.
Execution plans of both functions and procedures are cached, so the performance is same in both the cases.
If compileOptions doesn't work, try this
Disable 'Instant Run'.
Android Studio -> File -> Settings -> Build, Execution, Deployment -> Instant Run -> Disable checkbox
You need to specify the encoding of the InputStreamReader using the Charset parameter.
Charset inputCharset = Charset.forName("ISO-8859-1");
InputStreamReader isr = new InputStreamReader(fis, inputCharset));
This is work for me. i hope to help you.
Array of arrays (jagged arrays) are faster than multi-dimensional arrays and can be used more effectively. Multidimensional arrays have nicer syntax.
If you write some simple code using jagged and multidimensional arrays and then inspect the compiled assembly with an IL disassembler you will see that the storage and retrieval from jagged (or single dimensional) arrays are simple IL instructions while the same operations for multidimensional arrays are method invocations which are always slower.
Consider the following methods:
static void SetElementAt(int[][] array, int i, int j, int value)
{
array[i][j] = value;
}
static void SetElementAt(int[,] array, int i, int j, int value)
{
array[i, j] = value;
}
Their IL will be the following:
.method private hidebysig static void SetElementAt(int32[][] 'array',
int32 i,
int32 j,
int32 'value') cil managed
{
// Code size 7 (0x7)
.maxstack 8
IL_0000: ldarg.0
IL_0001: ldarg.1
IL_0002: ldelem.ref
IL_0003: ldarg.2
IL_0004: ldarg.3
IL_0005: stelem.i4
IL_0006: ret
} // end of method Program::SetElementAt
.method private hidebysig static void SetElementAt(int32[0...,0...] 'array',
int32 i,
int32 j,
int32 'value') cil managed
{
// Code size 10 (0xa)
.maxstack 8
IL_0000: ldarg.0
IL_0001: ldarg.1
IL_0002: ldarg.2
IL_0003: ldarg.3
IL_0004: call instance void int32[0...,0...]::Set(int32,
int32,
int32)
IL_0009: ret
} // end of method Program::SetElementAt
When using jagged arrays you can easily perform such operations as row swap and row resize. Maybe in some cases usage of multidimensional arrays will be more safe, but even Microsoft FxCop tells that jagged arrays should be used instead of multidimensional when you use it to analyse your projects.
It does not work because your script in JSFiddle is running inside it's own scope (see the "OnLoad" drop down on the left?).
One way around this is to bind your event handler in javascript (where it should be):
document.getElementById('optionID').onchange = function () {
document.getElementById("message").innerHTML = "Having a Baby!!";
};
Another way is to modify your code for the fiddle environment and explicitly declare your function as global so it can be found by your inline event handler:
window.changeMessage() {
document.getElementById("message").innerHTML = "Having a Baby!!";
};
?
Assuming you know the position and the length of the substring:
char *buff = "this is a test string";
printf("%.*s", 4, buff + 10);
You could achieve the same thing by copying the substring to another memory destination, but it's not reasonable since you already have it in memory.
This is a good example of avoiding unnecessary copying by using pointers.
Uncomment the following line : [System.Web.Script.Services.ScriptService]
Service will start working fine.
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
[System.Web.Script.Services.ScriptService]
public class WebService : System.Web.Services.WebService
{
Edit:
As some folks needs help in Unlocking device after locking programmatically, I came through post Android screen lock/ unlock programatically, please have look, may help you.
Original Answer was:
You need to get Admin permission and you can lock phone screen
please check below simple tutorial to achive this one
Lock Phone Screen Programmtically
also here is the code example..
LockScreenActivity.java
public class LockScreenActivity extends Activity implements OnClickListener {
private Button lock;
private Button disable;
private Button enable;
static final int RESULT_ENABLE = 1;
DevicePolicyManager deviceManger;
ActivityManager activityManager;
ComponentName compName;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
deviceManger = (DevicePolicyManager)getSystemService(
Context.DEVICE_POLICY_SERVICE);
activityManager = (ActivityManager)getSystemService(
Context.ACTIVITY_SERVICE);
compName = new ComponentName(this, MyAdmin.class);
setContentView(R.layout.main);
lock =(Button)findViewById(R.id.lock);
lock.setOnClickListener(this);
disable = (Button)findViewById(R.id.btnDisable);
enable =(Button)findViewById(R.id.btnEnable);
disable.setOnClickListener(this);
enable.setOnClickListener(this);
}
@Override
public void onClick(View v) {
if(v == lock){
boolean active = deviceManger.isAdminActive(compName);
if (active) {
deviceManger.lockNow();
}
}
if(v == enable){
Intent intent = new Intent(DevicePolicyManager
.ACTION_ADD_DEVICE_ADMIN);
intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN,
compName);
intent.putExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION,
"Additional text explaining why this needs to be added.");
startActivityForResult(intent, RESULT_ENABLE);
}
if(v == disable){
deviceManger.removeActiveAdmin(compName);
updateButtonStates();
}
}
private void updateButtonStates() {
boolean active = deviceManger.isAdminActive(compName);
if (active) {
enable.setEnabled(false);
disable.setEnabled(true);
} else {
enable.setEnabled(true);
disable.setEnabled(false);
}
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case RESULT_ENABLE:
if (resultCode == Activity.RESULT_OK) {
Log.i("DeviceAdminSample", "Admin enabled!");
} else {
Log.i("DeviceAdminSample", "Admin enable FAILED!");
}
return;
}
super.onActivityResult(requestCode, resultCode, data);
}
}
MyAdmin.java
public class MyAdmin extends DeviceAdminReceiver{
static SharedPreferences getSamplePreferences(Context context) {
return context.getSharedPreferences(
DeviceAdminReceiver.class.getName(), 0);
}
static String PREF_PASSWORD_QUALITY = "password_quality";
static String PREF_PASSWORD_LENGTH = "password_length";
static String PREF_MAX_FAILED_PW = "max_failed_pw";
void showToast(Context context, CharSequence msg) {
Toast.makeText(context, msg, Toast.LENGTH_SHORT).show();
}
@Override
public void onEnabled(Context context, Intent intent) {
showToast(context, "Sample Device Admin: enabled");
}
@Override
public CharSequence onDisableRequested(Context context, Intent intent) {
return "This is an optional message to warn the user about disabling.";
}
@Override
public void onDisabled(Context context, Intent intent) {
showToast(context, "Sample Device Admin: disabled");
}
@Override
public void onPasswordChanged(Context context, Intent intent) {
showToast(context, "Sample Device Admin: pw changed");
}
@Override
public void onPasswordFailed(Context context, Intent intent) {
showToast(context, "Sample Device Admin: pw failed");
}
@Override
public void onPasswordSucceeded(Context context, Intent intent) {
showToast(context, "Sample Device Admin: pw succeeded");
}
}
For C
/C++
programs there's very good package gpp-compiler.
Shortcuts:
F5
F6
Without doing a full revamp of the default routing (#/ViewName) environment, I was able to do a slight modification of Cody's tip and got it working great.
the controller
.controller('GeneralCtrl', ['$route', '$routeParams', '$location',
function($route, $routeParams, $location) {
...
this.goToView = function(viewName){
$location.url('/' + viewName);
}
}]
);
the view
...
<li ng-click="general.goToView('Home')">HOME</li>
...
What brought me to this solution was when I was attempting to integrate a Kendo Mobile UI widget into an angular environment I was losing the context of my controller and the behavior of the regular anchor tag was also being hijacked. I re-established my context from within the Kendo widget and needed to use a method to navigate...this worked.
Thanks for the previous posts!
Sorry for the necro on this post, but I feel compelled to weigh in on a couple of things that do not seem to have been touched on.
First a foremost - when we find ourselves needing access to private members on a class during unit testing, it is generally a big, fat red flag that we've goofed in our strategic or tactical approach and have inadvertently violated the single responsibility principal by pushing behavior where it does not belong. Feeling the need to access methods that are really nothing more than an isolated subroutine of a construction procedure is one of the most common occurrences of this; however, it's kind of like your boss expecting you to show up for work ready-to-go and also having some perverse need to know what morning routine you went through to get you into that state...
The other most common instance of this happening is when you find yourself trying to test the proverbial "god class." It is a special kind of problem in and of itself, but suffers from the same basic issue with needing to know intimate details of a procedure - but that's getting off topic.
In this specific example, we've effectively assigned the responsibility of fully initializing the Bar object to the FooBar class's constructor. In object oriented programming, one of the core tenents is that the constructor is "sacred" and should be guarded against invalid data that would invalidate its' own internal state and leave it primed to fail somewhere else downstream (in what could be a very deep pipeline.)
We've failed to do that here by allowing the FooBar object to accept a Bar that is not ready at the time that the FooBar is constructed, and have compensated by sort-of "hacking" the FooBar object to take matters into its' own hands.
This is the result of a failure to adhere to another tenent of object oriented programming (in the case of Bar,) which is that an object's state should be fully initialized and ready to handle any incoming calls to its' public members immediately after creation. Now, this does not mean immediately after the constructor is called in all instances. When you have an object that has many complex construction scenarios, then it is better to expose setters to its optional members to an object that is implemented in accordance with a creation design-pattern (Factory, Builder, etc...) In any of the latter cases, you would be pushing the initialization of the target object off into another object graph whose sole purpose is directing traffic to get you to a point where you have a valid instance of that which you are requesting - and the product should not be considered "ready" until after this creation object has served it up.
In your example, the Bar's "status" property does not seem to be in a valid state in which a FooBar can accept it - so the FooBar does something to it to correct that issue.
The second issue I am seeing is that it appears that you are trying to test your code rather than practice test-driven development. This is definitely my own opinion at this point in time; but, this type of testing is really an anti-pattern. What you end up doing is falling into the trap of realizing that you have core design problems that prevent your code from being testable after the fact, rather than writing the tests you need and subsequently programming to the tests. Either way you come at the problem, you should still end up with the same number of tests and lines of code had you truly achieved a SOLID implementation. So - why try and reverse engineer your way into testable code when you can just address the matter at the onset of your development efforts?
Had you done that, then you would have realized much earlier on that you were going to have to write some rather icky code in order to test against your design and would have had the opportunity early on to realign your approach by shifting behavior to implementations that are easily testable.
In HTML,
<button disabled/>
<buttton disabled="true">
<buttton disabled="false">
<buttton disabled="21">
All of them boils down to disabled="true" that is because it returns true for a non-empty string. Hence, in order to return false, pass a empty string in a conditional statement like this.input.value?"true":"".
render() {
return (
<div className="add-item">
<input type="text" className="add-item__input" ref={(input) => this.input = input} placeholder={this.props.placeholder} />
<button disabled={this.input.value?"true":""} className="add-item__button" onClick={this.add.bind(this)}>Add</button>
</div>
);
}
Your going to need CURL for that task I'm afraid. Nice easy way to do it here: http://davidwalsh.name/execute-http-post-php-curl
Hope that helps
The answer's here, I think.
It's better if you do git rm <fileName>
, though.
I realize this is an old post but I find myself coming back to this thread a lot as it is one of the top search results when searching for this topic. However, I always leave more confused then when I came due to the conflicting information. Ultimately I always have to perform my own tests to figure it out. So this time I will post my findings.
TL;DR Most people will want to use Exit
to terminate a running scripts. However, if your script is merely declaring functions to later be used in a shell, then you will want to use Return
in the definitions of said functions.
Exit: This will "exit" the currently running context. If you call this command from a script it will exit the script. If you call this command from the shell it will exit the shell.
If a function calls the Exit command it will exit what ever context it is running in. So if that function is only called from within a running script it will exit that script. However, if your script merely declares the function so that it can be used from the current shell and you run that function from the shell, it will exit the shell because the shell is the context in which the function contianing the Exit
command is running.
Note: By default if you right click on a script to run it in PowerShell, once the script is done running, PowerShell will close automatically. This has nothing to do with the Exit
command or anything else in your script. It is just a default PowerShell behavior for scripts being ran using this specific method of running a script. The same is true for batch files and the Command Line window.
Return: This will return to the previous call point. If you call this command from a script (outside any functions) it will return to the shell. If you call this command from the shell it will return to the shell (which is the previous call point for a single command ran from the shell). If you call this command from a function it will return to where ever the function was called from.
Execution of any commands after the call point that it is returned to will continue from that point. If a script is called from the shell and it contains the Return
command outside any functions then when it returns to the shell there are no more commands to run thus making a Return
used in this way essentially the same as Exit
.
Break: This will break out of loops and switch cases. If you call this command while not in a loop or switch case it will break out of the script. If you call Break
inside a loop that is nested inside a loop it will only break out of the loop it was called in.
There is also an interesting feature of Break
where you can prefix a loop with a label and then you can break out of that labeled loop even if the Break
command is called within several nested groups within that labeled loop.
While ($true) {
# Code here will run
:myLabel While ($true) {
# Code here will run
While ($true) {
# Code here will run
While ($true) {
# Code here will run
Break myLabel
# Code here will not run
}
# Code here will not run
}
# Code here will not run
}
# Code here will run
}
Your function declares a constant reference to a string:
int foo(const string &myname) {
cout << "called foo for: " << myname << endl;
return 0;
}
A reference has some special properties, which make it a safer alternative to pointers in many ways:
How does the function signature differ from the equivalent C:
int foo(const char *myname)
There are several differences, since the first refers directly to an object, while const char*
must be dereferenced to point to the data.
Is there a difference between using string *myname vs string &myname?
The main difference when dealing with parameters is that you do not need to dereference &myname
. A simpler example is:
int add_ptr(int *x, int* y)
{
return *x + *y;
}
int add_ref(int &x, int &y)
{
return x + y;
}
which do exactly the same thing. The only difference in this case is that you do not need to dereference x
and y
as they refer directly to the variables passed in.
const string &GetMethodName() { ... }
What is the & doing here? Is there some website that explains how & is used differently in C vs C++?
This returns a constant reference to a string. So the caller gets to access the returned variable directly, but only in a read-only sense. This is sometimes used to return string data members without allocating extra memory.
There are some subtleties with references - have a look at the C++ FAQ on References for some more details.
You can use these links to download Visual Studio 2015
Community Edition:
And for anyone in the future who might be looking for the other editions here are the links for them as well:
Professional Edition:
Enterprise Edition:
You need something like this, maybe it can be improved. This is a first attempt:
...
import org.springframework.core.env.PropertySource;
import org.springframework.core.env.AbstractEnvironment;
import org.springframework.core.env.Environment;
import org.springframework.core.env.MapPropertySource;
...
@Configuration
...
@org.springframework.context.annotation.PropertySource("classpath:/config/default.properties")
...
public class GeneralApplicationConfiguration implements WebApplicationInitializer
{
@Autowired
Environment env;
public void someMethod() {
...
Map<String, Object> map = new HashMap();
for(Iterator it = ((AbstractEnvironment) env).getPropertySources().iterator(); it.hasNext(); ) {
PropertySource propertySource = (PropertySource) it.next();
if (propertySource instanceof MapPropertySource) {
map.putAll(((MapPropertySource) propertySource).getSource());
}
}
...
}
...
Basically, everything from the Environment that's a MapPropertySource
(and there are quite a lot of implementations) can be accessed as a Map
of properties.
As has, to some extent, been mentioned before, an enum is a java class with the special condition that its definition must start with at least one "enum constant".
Apart from that, and that enums cant can't be extended or used to extend other classes, an enum is a class like any class and you use it by adding methods below the constant definitions:
public enum MySingleton {
INSTANCE;
public void doSomething() { ... }
public synchronized String getSomething() { return something; }
private String something;
}
You access the singleton's methods along these lines:
MySingleton.INSTANCE.doSomething();
String something = MySingleton.INSTANCE.getSomething();
The use of an enum, instead of a class, is, as has been mentioned in other answers, mostly about a thread-safe instantiation of the singleton and a guarantee that it will always only be one copy.
And, perhaps, most importantly, that this behavior is guaranteed by the JVM itself and the Java specification.
Here's a section from the Java specification on how multiple instances of an enum instance is prevented:
An enum type has no instances other than those defined by its enum constants. It is a compile-time error to attempt to explicitly instantiate an enum type. The final clone method in Enum ensures that enum constants can never be cloned, and the special treatment by the serialization mechanism ensures that duplicate instances are never created as a result of deserialization. Reflective instantiation of enum types is prohibited. Together, these four things ensure that no instances of an enum type exist beyond those defined by the enum constants.
Worth noting is that after the instantiation any thread-safety concerns must be handled like in any other class with the synchronized keyword etc.
There are two important concepts in multithreading environment:
The volatile
keyword eradicates visibility problems, but it does not deal with atomicity. volatile
will prevent the compiler from reordering instructions which involve a write and a subsequent read of a volatile variable; e.g. k++
.
Here, k++
is not a single machine instruction, but three:
So, even if you declare a variable as volatile
, this will not make this operation atomic; this means another thread can see a intermediate result which is a stale or unwanted value for the other thread.
On the other hand, AtomicInteger
, AtomicReference
are based on the Compare and swap instruction. CAS has three operands: a memory location V
on which to operate, the expected old value A
, and the new value B
. CAS
atomically updates V
to the new value B
, but only if the value in V
matches the expected old value A
; otherwise, it does nothing. In either case, it returns the value currently in V
. The compareAndSet()
methods of AtomicInteger
and AtomicReference
take advantage of this functionality, if it is supported by the underlying processor; if it is not, then the JVM implements it via spin lock.
Not sure if you have solved the problem. For this issue, you can use the "filter" function in the dplyr package. The idea is to filter the observations/rows whose values of the variable of your interest is not NA. Next, you make the graph with these filtered observations. You can find my codes below, and note that all the name of the data frame and variable is copied from the prompt of your question. Also, I assume you know the pipe operators.
library(tidyverse)
MyDate %>%
filter(!is.na(the_variable)) %>%
ggplot(aes(x= the_variable, fill=the_variable)) +
geom_bar(stat="bin")
You should be able to remove the annoying NAs on your plot. Hope this works :)
Horizontal centering is easy. You just need to set both margins to "auto":
table {
margin-left: auto;
margin-right: auto;
}
Vertical centering usually is achieved by setting the parent element display type to table-cell
and using vertical-align
property. Assuming you have a <div class="wrapper">
around your table:
.wrapper {
display: table-cell;
vertical-align: middle;
}
More detailed information may be found on http://www.w3.org/Style/Examples/007/center
If you need support for older versions of Internet Explorer (I do not know what works in what version of this strange and rarely used browser ;-) ) then you may want to search the web for more information, like: http://www.jakpsatweb.cz/css/css-vertical-center-solution.html (just a first hit, which seems to mention IE)
Try this it will work. Do not enter password it will ask one you execute the following cmd
C:\xampp\mysql\bin\mysql -u xxxxx -p -h localhost your_database_name < c:\yourfile.sql
Could the Barcode Rendering Framework at Codeplex GitHub be of help?
The EOF
character recognized by the command interpreter on Windows (and MSDOS, and CP/M) is 0x1a (decimal 26, aka Ctrl+Z aka SUB)
It can still be be used today for example to mark the end of a human-readable header in a binary file: if the file begins with "Some description\x1a"
the user can dump the file content to the console using the TYPE
command and the dump will stop at the EOF
character, i.e. print Some description and stop, instead of continuing with the garbage that follows.
I just installed Drony, is not shareware and it does no require root on cellphone with Android 3.x or above
https://play.google.com/store/apps/details?id=org.sandroproxy.drony
It intercepts the requests and are shown on a LOG
You can also use functions with $filter('filter')
:
var foo = $filter('filter')($scope.results.subjects, function (item) {
return item.grade !== 'A';
});
Just use Entry (as in java.util.Map.Entry) as the list type, and populate it using (java.util.AbstractMap’s) SimpleImmutableEntry:
List<Entry<Integer, String>> sections = new ArrayList<>();
sections.add(new SimpleImmutableEntry<>(anInteger, orString)):
.xlsx
loads 4 times longer than .xlsb
and saves 2 times longer and has 1.5 times a bigger file. I tested this on a generated worksheet with 10'000 rows * 1'000 columns = 10'000'000 (10^7) cells of simple chained =…+1
formulas:
?--------------------------------?
¦ ¦ .xlsx ¦ .xlsb ¦
¦--------------+--------+--------¦
¦ loading time ¦ 165s ¦ 43s ¦
+--------------+--------+--------¦
¦ saving time ¦ 115s ¦ 61s ¦
+--------------+--------+--------¦
¦ file size ¦ 91 MB ¦ 65 MB ¦
?--------------------------------?
(Hardware: Core2Duo 2.3 GHz, 4 GB RAM, 5.400 rpm SATA II HD; Windows 7, under somewhat heavy load from other processes.)
Beside this, there should be no differences. More precisely,
both formats support exactly the same feature set
cites this blog post from 2006-08-29. So maybe the info that .xlsb
does not support Ribbon code is newer than the upper citation, but I figure that forum source of yours is just wrong. When cracking open the binary file, it seems to condensedly mimic the OOXML file structure 1-to-1: Blog article from 2006-08-07
Thank you all for your help.
This is what I have used in the end:
SELECT *,
CASE WHEN [url] NOT LIKE '%[^-A-Za-z0-9/.+$]%'
THEN 'Valid'
ELSE 'No valid'
END [Validate]
FROM
*table*
ORDER BY [Validate]
This seems to be added recently:
https://repo1.maven.org/maven2/javax/servlet/javax.servlet-api/3.0.1/
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
In android studio you can easily press:
android studio
, then press on app first.
Then, continue with step three as follows.You can also change the versionCode
of your app there.
Step 1: Go to json.org to find the JSON library for whatever technology you're using to call this web service. Download and link to that library.
Step 2: Let's say you're using Java. You would use JSONArray like this:
JSONArray myArray=new JSONArray(queryResponse);
for (int i=0;i<myArray.length;i++){
JSONArray myInteriorArray=myArray.getJSONArray(i);
if (i==0) {
//this is the first one and is special because it holds the name of the query.
}else{
//do your stuff
String stateCode=myInteriorArray.getString(0);
String stateName=myInteriorArray.getString(1);
}
}
In my case I ran on this problem while using Edge.js — all the problem was a JavaScript syntax error inside a C# Edge.js function definition.
Dupx
Dupx is a simple *nix utility to redirect standard output/input/error of an already running process.
Motivation
I've often found myself in a situation where a process I started on a remote system via SSH takes much longer than I had anticipated. I need to break the SSH connection, but if I do so, the process will die if it tries to write something on stdout/error of a broken pipe. I wish I could suspend the process with ^Z and then do a
bg %1 >/tmp/stdout 2>/tmp/stderr
Unfortunately this will not work (in shells I know).
There is no need to either call non-portable APIs like sendfile
, or shell out to external utilities. The same method that worked back in the 70s still works now:
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
int cp(const char *to, const char *from)
{
int fd_to, fd_from;
char buf[4096];
ssize_t nread;
int saved_errno;
fd_from = open(from, O_RDONLY);
if (fd_from < 0)
return -1;
fd_to = open(to, O_WRONLY | O_CREAT | O_EXCL, 0666);
if (fd_to < 0)
goto out_error;
while (nread = read(fd_from, buf, sizeof buf), nread > 0)
{
char *out_ptr = buf;
ssize_t nwritten;
do {
nwritten = write(fd_to, out_ptr, nread);
if (nwritten >= 0)
{
nread -= nwritten;
out_ptr += nwritten;
}
else if (errno != EINTR)
{
goto out_error;
}
} while (nread > 0);
}
if (nread == 0)
{
if (close(fd_to) < 0)
{
fd_to = -1;
goto out_error;
}
close(fd_from);
/* Success! */
return 0;
}
out_error:
saved_errno = errno;
close(fd_from);
if (fd_to >= 0)
close(fd_to);
errno = saved_errno;
return -1;
}
extension Array where Element: Encodable {
func asArrayDictionary() throws -> [[String: Any]] {
var data: [[String: Any]] = []
for element in self {
data.append(try element.asDictionary())
}
return data
}
}
extension Encodable {
func asDictionary() throws -> [String: Any] {
let data = try JSONEncoder().encode(self)
guard let dictionary = try JSONSerialization.jsonObject(with: data, options: .allowFragments) as? [String: Any] else {
throw NSError()
}
return dictionary
}
}
If you're using Codable protocols in your models these extensions might be helpful for getting dictionary representation (Swift 4)
on my pc I had the same problem and it was because in properties -> security I didn't have the ownership of the file...
If the user successful login into your Node app, I'm thinking that you are using Express, isn't ? Well you can redirect easy by using res.redirect
. Like:
app.post('/auth', function(req, res) {
// Your logic and then redirect
res.redirect('/user_profile');
});
Grid computing is where more than one computer coordinates to solve a problem together. Often used for problems involving a lot of number crunching, which can be easily parallelisable.
Cloud computing is where an application doesn't access resources it requires directly, rather it accesses them through something like a service. So instead of talking to a specific hard drive for storage, and a specific CPU for computation, etc. it talks to some service that provides these resources. The service then maps any requests for resources to its physical resources, in order to provide for the application. Usually the service has access to a large amount of physical resources, and can dynamically allocate them as they are needed.
In this way, if an application requires only a small amount of some resource, say computation, then the service only allocates a small amount, say on a single physical CPU (that may be shared with some other application using the service). If the application requires a large amount of some resource, then the service allocates that large amount, say a grid of CPUs. The application is relatively oblivious to this, and all the complex handling and coordination is performed by the service, not the application. In this way the application can scale well.
For example a web site written "on the cloud" may share a server with many other web sites while it has a low amount of traffic, but may be moved to its own dedicated server, or grid of servers, if it ever has massive amounts of traffic. This is all handled by the cloud service, so the application shouldn't have to be modified drastically to cope.
A cloud would usually use a grid. A grid is not necessarily a cloud or part of a cloud.
Wikipedia articles: Grid computing, Cloud computing.
You can run the command in the background by adding a &
at the end of it as:
exec('run_baby_run &');
But doing this alone will hang your script because:
If a program is started with exec function, in order for it to continue running in the background, the output of the program must be redirected to a file or another output stream. Failing to do so will cause PHP to hang until the execution of the program ends.
So you can redirect the stdout of the command to a file, if you want to see it later or to /dev/null
if you want to discard it as:
exec('run_baby_run > /dev/null &');
A bin is range that represents the width of a single bar of the histogram along the X-axis. You could also call this the interval. (Wikipedia defines them more formally as "disjoint categories".)
The Numpy histogram
function doesn't draw the histogram, but it computes the occurrences of input data that fall within each bin, which in turns determines the area (not necessarily the height if the bins aren't of equal width) of each bar.
In this example:
np.histogram([1, 2, 1], bins=[0, 1, 2, 3])
There are 3 bins, for values ranging from 0 to 1 (excl 1.), 1 to 2 (excl. 2) and 2 to 3 (incl. 3), respectively. The way Numpy defines these bins if by giving a list of delimiters ([0, 1, 2, 3]
) in this example, although it also returns the bins in the results, since it can choose them automatically from the input, if none are specified. If bins=5
, for example, it will use 5 bins of equal width spread between the minimum input value and the maximum input value.
The input values are 1, 2 and 1. Therefore, bin "1 to 2" contains two occurrences (the two 1
values), and bin "2 to 3" contains one occurrence (the 2
). These results are in the first item in the returned tuple: array([0, 2, 1])
.
Since the bins here are of equal width, you can use the number of occurrences for the height of each bar. When drawn, you would have:
You can plot this directly with Matplotlib (its hist
function also returns the bins and the values):
>>> import matplotlib.pyplot as plt
>>> plt.hist([1, 2, 1], bins=[0, 1, 2, 3])
(array([0, 2, 1]), array([0, 1, 2, 3]), <a list of 3 Patch objects>)
>>> plt.show()
Online Viewstate Viewer made by Lachlan Keown:
http://lachlankeown.blogspot.com/2008/05/online-viewstate-viewer-decoder.html
To permanently make Visual Studio open a project in IE without changing the default browser you can do the following:
Project Properties -> Web -> Start Action
Start external program: C:\Program Files\Internet Explorer\iexplore.exe Command line arguments: Enter the url of the path to your start page ie http:\localhost\myproject\default.aspx
This won't allow you to debug client side script in Visual Studio though.
I know the OP is asking for SQL 2005 answer but the question is pretty old so if you're running SQL 2012 or above you can use the following:
SELECT DATEADD(DAY, 1, EOMONTH(@somedate, -1))
If someone is having issues with creating tables by using files dedicated to each model, be aware of running the "create_all" function from a file different from the one where that function is declared. So, if the filesystem is like this:
Root
--app.py <-- file from which app will be run
--models
----user.py <-- file with "User" model
----order.py <-- file with "Order" model
----database.py <-- file with database and "create_all" function declaration
Be careful about calling the "create_all" function from app.py.
This concept is explained better by the answer to this thread posted by @SuperShoot
Here is the jsFiddle
#backdrop{
border: 2px solid red;
width: 400px;
height: 200px;
position: absolute;
}
#curtain {
border: 1px solid blue;
width: 400px;
height: 200px;
position: absolute;
}
Use Z-index to move the one you want on top.
The posted setdiff
answer is nice. I just thought I'd post this related function I wrote a while back. Its usefulness is up to the reader :-).
lstype<-function(type='closure'){
inlist<-ls(.GlobalEnv)
if (type=='function') type <-'closure'
typelist<-sapply(sapply(inlist,get),typeof)
return(names(typelist[typelist==type]))
}
original answer moved to this topic .
Also you can use faster_than_requests package. That's very fast and simple:
import faster_than_requests as r
content = r.get2str("http://test.com/")
Look at this comparison:
My first answer!
This will set the safemode switch:
bcdedit /set {current} safeboot minimal
with networking:
bcdedit /set {current} safeboot network
then reboot the machine with
shutdown /r
to put back in normal mode via dos:
bcdedit /deletevalue {current} safeboot
In short:
Explanation:
Prebuilt OpenJDK (or distribution) — binaries, built from http://hg.openjdk.java.net/, provided as an archive or installer, offered for various platforms, with a possible support contract.
OpenJDK, the source repository (also called OpenJDK project) - is a Mercurial-based open source repository, hosted at http://hg.openjdk.java.net. The Java source code. The vast majority of Java features (from the VM and the core libraries to the compiler) are based solely on this source repository. Oracle have an alternate fork of this.
OpenJDK, the distribution (see the list of providers below) - is free as in beer and kind of free as in speech, but, you do not get to call Oracle if you have problems with it. There is no support contract. Furthermore, Oracle will only release updates to any OpenJDK (the distribution) version if that release is the most recent Java release, including LTS (long-term support) releases. The day Oracle releases OpenJDK (the distribution) version 12.0, even if there's a security issue with OpenJDK (the distribution) version 11.0, Oracle will not release an update for 11.0. Maintained solely by Oracle.
Some OpenJDK projects - such as OpenJDK 8 and OpenJDK 11 - are maintained by the OpenJDK community and provide releases for some OpenJDK versions for some platforms. The community members have taken responsibility for releasing fixes for security vulnerabilities in these OpenJDK versions.
AdoptOpenJDK, the distribution is very similar to Oracle's OpenJDK distribution (in that it is free, and it is a build produced by compiling the sources from the OpenJDK source repository). AdoptOpenJDK as an entity will not be backporting patches, i.e. there won't be an AdoptOpenJDK 'fork/version' that is materially different from upstream (except for some build script patches for things like Win32 support). Meaning, if members of the community (Oracle or others, but not AdoptOpenJDK as an entity) backport security fixes to updates of OpenJDK LTS versions, then AdoptOpenJDK will provide builds for those. Maintained by OpenJDK community.
OracleJDK - is yet another distribution. Starting with JDK12 there will be no free version of OracleJDK. Oracle's JDK distribution offering is intended for commercial support. You pay for this, but then you get to rely on Oracle for support. Unlike Oracle's OpenJDK offering, OracleJDK comes with longer support for LTS versions. As a developer you can get a free license for personal/development use only of this particular JDK, but that's mostly a red herring, as 'just the binary' is basically the same as the OpenJDK binary. I guess it means you can download security-patched versions of LTS JDKs from Oracle's websites as long as you promise not to use them commercially.
Note. It may be best to call the OpenJDK builds by Oracle the "Oracle OpenJDK builds".
Donald Smith, Java product manager at Oracle writes:
Ideally, we would simply refer to all Oracle JDK builds as the "Oracle JDK", either under the GPL or the commercial license, depending on your situation. However, for historical reasons, while the small remaining differences exist, we will refer to them separately as Oracle’s OpenJDK builds and the Oracle JDK.
---------------------------------------------------------------------------------------- | Provider | Free Builds | Free Binary | Extended | Commercial | Permissive | | | from Source | Distributions | Updates | Support | License | |--------------------------------------------------------------------------------------| | AdoptOpenJDK | Yes | Yes | Yes | No | Yes | | Amazon – Corretto | Yes | Yes | Yes | No | Yes | | Azul Zulu | No | Yes | Yes | Yes | Yes | | BellSoft Liberica | No | Yes | Yes | Yes | Yes | | IBM | No | No | Yes | Yes | Yes | | jClarity | No | No | Yes | Yes | Yes | | OpenJDK | Yes | Yes | Yes | No | Yes | | Oracle JDK | No | Yes | No** | Yes | No | | Oracle OpenJDK | Yes | Yes | No | No | Yes | | ojdkbuild | Yes | Yes | No | No | Yes | | RedHat | Yes | Yes | Yes | Yes | Yes | | SapMachine | Yes | Yes | Yes | Yes | Yes | ----------------------------------------------------------------------------------------
Free Builds from Source - the distribution source code is publicly available and one can assemble its own build
Free Binary Distributions - the distribution binaries are publicly available for download and usage
Extended Updates - aka LTS (long-term support) - Public Updates beyond the 6-month release lifecycle
Commercial Support - some providers offer extended updates and customer support to paying customers, e.g. Oracle JDK (support details)
Permissive License - the distribution license is non-protective, e.g. Apache 2.0
In the Sun/Oracle days, it was usually Sun/Oracle producing the proprietary downstream JDK distributions based on OpenJDK sources. Recently, Oracle had decided to do their own proprietary builds only with the commercial support attached. They graciously publish the OpenJDK builds as well on their https://jdk.java.net/ site.
What is happening starting JDK 11 is the shift from single-vendor (Oracle) mindset to the mindset where you select a provider that gives you a distribution for the product, under the conditions you like: platforms they build for, frequency and promptness of releases, how support is structured, etc. If you don't trust any of existing vendors, you can even build OpenJDK yourself.
Each build of OpenJDK is usually made from the same original upstream source repository (OpenJDK “the project”). However each build is quite unique - $free or commercial, branded or unbranded, pure or bundled (e.g., BellSoft Liberica JDK offers bundled JavaFX, which was removed from Oracle builds starting JDK 11).
If no environment (e.g., Linux) and/or license requirement defines specific distribution and if you want the most standard JDK build, then probably the best option is to use OpenJDK by Oracle or AdoptOpenJDK.
Additional information
Time to look beyond Oracle's JDK by Stephen Colebourne
Java Is Still Free by Java Champions community (published on September 17, 2018)
Java is Still Free 2.0.0 by Java Champions community (published on March 3, 2019)
Aleksey Shipilev about JDK updates interview by Opsian (published on June 27, 2019)
@Theo
The LINQ translator is smart enough to execute:
.Where(r => r.UserName !="XXXX" && r.UsernName !="YYYY")
I've test this in LinqPad ==> YES, Linq translator is smart enough :))
It seems that you didn't update the counter
is the script, use counter++
muPdf library looks very promising: http://mupdf.com/
There is also an open source viewer: http://blog.kowalczyk.info/software/sumatrapdf/free-pdf-reader.html
Three possible solutions come to my mind:
1. Reverse the order:
//convert the arr to list first
Collections.reverse(listWithNumbers);
System.out.print("Numbers in Descending Order: " + listWithNumbers);
2. Iterate backwards and print it:
Arrays.sort(arr);
System.out.print("Numbers in Descending Order: " );
for(int i = arr.length - 1; i >= 0; i--){
System.out.print( " " +arr[i]);
}
3. Sort it with "oposite" comparator:
Arrays.sort(arr, new Comparator<Integer>(){
int compare(Integer i1, Integer i2) {
return i2 - i1;
}
});
// or Collections.reverseOrder(), could be used instead
System.out.print("Numbers in Descending Order: " );
for(int i = 0; i < arr.length; i++){
System.out.print( " " +arr[i]);
}
When you open catalina.sh / catalina.bat, you can see :
Environment Variable Prequisites
JAVA_HOME Must point at your Java Development Kit installation.
So, set your environment variable JAVA_HOME
to point to Java 6. Also make sure JRE_HOME
is pointing to the same target, if it is set.
Update: since you are on Windows, see here for how to manage your environment variables
If you are using the command line shell to SQLite then .headers on
before you perform your query. You only need to do this once in a given session.
You can't kill a goroutine from outside. You can signal a goroutine to stop using a channel, but there's no handle on goroutines to do any sort of meta management. Goroutines are intended to cooperatively solve problems, so killing one that is misbehaving would almost never be an adequate response. If you want isolation for robustness, you probably want a process.
Try to look at KEYS
command. KEYS *
will list all keys stored in redis.
EDIT: please note the warning at the top of KEYS
documentation page:
Time complexity: O(N) with N being the number of keys in the database, under the assumption that the key names in the database and the given pattern have limited length.
UPDATE (V2.8 or greater): SCAN
is a superior alternative to KEYS
, in the sense that it does not block the server nor does it consume significant resources. Prefer using it.
Try replacing the string literal for date '1989-12-09'
with TO_DATE('1989-12-09','YYYY-MM-DD')
Using dynamic enums is bad no matter which way. You will have to go through the trouble of "duplicating" the data to ensure clear and easy code easy to maintain in the future.
If you start introducing automatic generated libraries, you are for sure causing more confusion to future developers having to upgrade your code than simply making your enum coded within the appropriate class object.
The other examples given sound nice and exciting, but think about the overhead on code maintenance versus what you get from it. Also, are those values going to change that frequently?
I believe telnet 74.255.12.25 8089
. Why don't u try both
The reverse() is used to adhere the django DRY principle i.e if you change the url in future then you can reference that url using reverse(urlname).
There is an open issue for this on their github page: https://github.com/npm/npm/issues/18712
This issue is most severe when developers are using different operating systems.
Try to remove the constructor and destructors, it's working for me....
Use this:
resourcesloader.class.getClassLoader().getResource("/path/to/file").**getPath();**
Setting windowLightStatusBar
to true
not works with Mi phones, some Meizu phones, Blackview phones, WileyFox etc.
I've found such hack for Mi and Meizu devices. This is not a comprehensive solution of this perfomance problem, but maybe it would be useful to somebody.
And I think, it would be better to tell your customer that coloring status bar (for example) white - is not a good idea. instead of using different hacks it would be better to define appropriate colorPrimaryDark
according to the guidelines
If you're using PHP5 (>= 5.3.2) with PHPUnit, you can test your private and protected methods by using reflection to set them to be public prior to running your tests:
protected static function getMethod($name) {
$class = new ReflectionClass('MyClass');
$method = $class->getMethod($name);
$method->setAccessible(true);
return $method;
}
public function testFoo() {
$foo = self::getMethod('foo');
$obj = new MyClass();
$foo->invokeArgs($obj, array(...));
...
}
Official Python .msi installers are designed to replace:
A snapshot installer is designed to replace any snapshot with a lower micro version.
(See responsible code for 2.x, for 3.x)
Any other versions are not necessarily compatible and are thus installed alongside the existing one. If you wish to uninstall the old version, you'll need to do that manually. And also uninstall any 3rd-party modules you had for it:
bdist_wininst
packages (Windows .exe
s), uninstall them before uninstalling the version, or the uninstaller might not work correctly if it has custom logicsetuptools
/pip
that reside in Lib\site-packages
can just be deleted afterwards%APPDATA%/Python/PythonXY/site-packages
and can likewise be deletedI don't know how stubhub's api works, but generally it should look like this:
s = requests.Session()
data = {"login":"my_login", "password":"my_password"}
url = "http://example.net/login"
r = s.post(url, data=data)
Now your session contains cookies provided by login form. To access cookies of this session simply use
s.cookies
Any further actions like another requests will have this cookie
time_point
objects only support arithmetic with other time_point
or duration
objects.
You'll need to convert your long
to a duration
of specified units, then your code should work correctly.
You can access the Python console via “View/Show console” or Ctrl+`.
The function grid.arrange()
in the gridExtra
package will combine multiple plots; this is how you put two side by side.
require(gridExtra)
plot1 <- qplot(1)
plot2 <- qplot(1)
grid.arrange(plot1, plot2, ncol=2)
This is useful when the two plots are not based on the same data, for example if you want to plot different variables without using reshape().
This will plot the output as a side effect. To print the side effect to a file, specify a device driver (such as pdf
, png
, etc), e.g.
pdf("foo.pdf")
grid.arrange(plot1, plot2)
dev.off()
or, use arrangeGrob()
in combination with ggsave()
,
ggsave("foo.pdf", arrangeGrob(plot1, plot2))
This is the equivalent of making two distinct plots using par(mfrow = c(1,2))
. This not only saves time arranging data, it is necessary when you want two dissimilar plots.
Facets are helpful for making similar plots for different groups. This is pointed out below in many answers below, but I want to highlight this approach with examples equivalent to the above plots.
mydata <- data.frame(myGroup = c('a', 'b'), myX = c(1,1))
qplot(data = mydata,
x = myX,
facets = ~myGroup)
ggplot(data = mydata) +
geom_bar(aes(myX)) +
facet_wrap(~myGroup)
the plot_grid
function in the cowplot
is worth checking out as an alternative to grid.arrange
. See the answer by @claus-wilke below and this vignette for an equivalent approach; but the function allows finer controls on plot location and size, based on this vignette.
In JavaScript, the type of the value solely controls whether that value will be assigned by value-copy or by reference-copy.
Primitive values are always assigned/passed by value-copy:
null
undefined
ES6
Compound values are always assigned/passed by reference-copy
For example
var a = 2;
var b = a; // `b` is always a copy of the value in `a`
b++;
a; // 2
b; // 3
var c = [1,2,3];
var d = c; // `d` is a reference to the shared `[1,2,3]` value
d.push( 4 );
c; // [1,2,3,4]
d; // [1,2,3,4]
In the above snippet, because 2
is a scalar primitive, a
holds one initial copy of that value, and b
is assigned another copy of the value. When changing b
, you are in no way changing the value in a
.
But both c
and d
are separate references to the same shared value [1,2,3]
, which is a compound value. It's important to note that neither c
nor d
more "owns" the [1,2,3]
value -- both are just equal peer references to the value. So, when using either reference to modify (.push(4)
) the actual shared array
value itself, it's affecting just the one shared value, and both references will reference the newly modified value [1,2,3,4]
.
var a = [1,2,3];
var b = a;
a; // [1,2,3]
b; // [1,2,3]
// later
b = [4,5,6];
a; // [1,2,3]
b; // [4,5,6]
When we make the assignment b = [4,5,6]
, we are doing absolutely nothing to affect where a
is still referencing ([1,2,3]
). To do that, b
would have to be a pointer to a
rather than a reference to the array
-- but no such capability exists in JS!
function foo(x) {
x.push( 4 );
x; // [1,2,3,4]
// later
x = [4,5,6];
x.push( 7 );
x; // [4,5,6,7]
}
var a = [1,2,3];
foo( a );
a; // [1,2,3,4] not [4,5,6,7]
When we pass in the argument a
, it assigns a copy of the a
reference to x
. x
and a
are separate references pointing at the same [1,2,3]
value. Now, inside the function, we can use that reference to mutate the value itself (push(4)
). But when we make the assignment x = [4,5,6]
, this is in no way affecting where the initial reference a
is pointing -- still points at the (now modified) [1,2,3,4]
value.
To effectively pass a compound value (like an array
) by value-copy, you need to manually make a copy of it, so that the reference passed doesn't still point to the original. For example:
foo( a.slice() );
Compound value (object, array, etc) that can be passed by reference-copy
function foo(wrapper) {
wrapper.a = 42;
}
var obj = {
a: 2
};
foo( obj );
obj.a; // 42
Here, obj
acts as a wrapper for the scalar primitive property a
. When passed to foo(..)
, a copy of the obj
reference is passed in and set to the wrapper
parameter. We now can use the wrapper
reference to access the shared object, and update its property. After the function finishes, obj.a
will see the updated value 42
.
import os
os.remove("/tmp/<file_name>.txt")
Or
import os
os.unlink("/tmp/<file_name>.txt")
Or
pathlib Library for Python version >= 3.4
file_to_rem = pathlib.Path("/tmp/<file_name>.txt")
file_to_rem.unlink()
Unlink method used to remove the file or the symbolik link.
If missing_ok is false (the default), FileNotFoundError is raised if the path does not exist.
If missing_ok is true, FileNotFoundError exceptions will be ignored (same behavior as the POSIX rm -f command).
Changed in version 3.8: The missing_ok parameter was added.
os.path.isfile("/path/to/file")
exception handling.
EXAMPLE for os.path.isfile
#!/usr/bin/python
import os
myfile="/tmp/foo.txt"
## If file exists, delete it ##
if os.path.isfile(myfile):
os.remove(myfile)
else: ## Show an error ##
print("Error: %s file not found" % myfile)
#!/usr/bin/python
import os
## Get input ##
myfile= raw_input("Enter file name to delete: ")
## Try to delete the file ##
try:
os.remove(myfile)
except OSError as e: ## if failed, report it back to the user ##
print ("Error: %s - %s." % (e.filename, e.strerror))
Enter file name to delete : demo.txt Error: demo.txt - No such file or directory. Enter file name to delete : rrr.txt Error: rrr.txt - Operation not permitted. Enter file name to delete : foo.txt
shutil.rmtree()
Example for shutil.rmtree()
#!/usr/bin/python
import os
import sys
import shutil
# Get directory name
mydir= raw_input("Enter directory name: ")
## Try to remove tree; if failed show an error using try...except on screen
try:
shutil.rmtree(mydir)
except OSError as e:
print ("Error: %s - %s." % (e.filename, e.strerror))
fgets would work for you. here is very good documentation on this :-
http://www.cplusplus.com/reference/cstdio/fgets/
If you don't want to use fgets, following method will work for you :-
int readline(FILE *f, char *buffer, size_t len)
{
char c;
int i;
memset(buffer, 0, len);
for (i = 0; i < len; i++)
{
int c = fgetc(f);
if (!feof(f))
{
if (c == '\r')
buffer[i] = 0;
else if (c == '\n')
{
buffer[i] = 0;
return i+1;
}
else
buffer[i] = c;
}
else
{
//fprintf(stderr, "read_line(): recv returned %d\n", c);
return -1;
}
}
return -1;
}
I have a solution for this. First thing that add is already having a string value as input() function by default takes the input as string. Second thing that you can use append method to append value of add variable in your list.
Please do check my code I have done some modification : - {1} You can enter command in capital or small or mix {2} If user entered wrong command then your program will ask to input command again
inventory = ["sword","potion","armour","bow"] print(inventory) print("\ncommands : use (remove item) and pickup (add item)") selection=input("choose a command [use/pickup] : ") while True: if selection.lower()=="use": print(inventory) remove_item=input("What do you want to use? ") inventory.remove(remove_item) print(inventory) break
elif selection.lower()=="pickup":
print(inventory)
add_item=input("What do you want to pickup? ")
inventory.append(add_item)
print(inventory)
break
else:
print("Invalid Command. Please check your input")
selection=input("Once again choose a command [use/pickup] : ")
The jquery colortip plugin also supports <br>
tags in the title attribute, you might want to look into that one.
You could also use the TextBox's On Key Press event handler:
'Keycode for "Enter" is 13
Private Sub TextBox1_KeyDown(KeyCode As Integer, Shift As Integer)
If KeyCode = 13 Then
Logincode_Click
End If
End Sub
Textbox1 is an example. Make sure you choose the textbox you want to refer to and also Logincode_Click is an example sub which you call (run) with this code. Make sure you refer to your preferred sub
I spent days trying all the above answers and ensuring I had the proxy and other settings in my node config correct. All were and it was still failing. I was/am using a Windows 10 machine and behind a corp proxy.
For some legacy reason, I had HTTP_PROXY
and HTTPS_PROXY
set in my user environment variables which overrides the node ones (unknown to me), so correcting these (the HTTPS_PROXY
one was set to https, so I changed to HTTP) fixed the problem for me.
This is the problem when we can have the Same variables in Multiple places, you don't know what one is being used!
Recursive traverse object or array with array or objects elements:
function traverse(&$objOrArray)
{
foreach ($objOrArray as $key => &$value)
{
if (is_array($value) || is_object($value))
{
traverse($value);
}
else
{
// DO SOMETHING
}
}
}
import numpy as np
from keras.preprocessing.image import array_to_img
img = np.zeros([525,525,3], np.uint8)
b=array_to_img(img)
b
Hmm... it works for me and with far less than 999MB of stack:
> java -Xss4m Test
0
(Windows JDK 7, build 17.0-b05 client VM, and Linux JDK 6 - same version information as you posted)
ARGH!
I found it... I didn't have an extra package, called Microsoft.Owin.Host.SystemWeb
Once i searched and installed this, it worked.
Now - i am not sure if i just missed everything, though found NO reference to such a library or package when going through various tutorials. It also didn't get installed when i installed all this Identity framework... Not sure if it were just me..
EDIT
Although it's in the Microsoft.Owin.Host.SystemWeb
assembly it is an extension method in the System.Web
namespace, so you need to have the reference to the former, and be using
the latter.