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What is a NullPointerException, and how do I fix it?
...n the most trivial cases, the compiler will catch the problem and let you know that "num may not have been initialized," but sometimes you may write code that does not directly create the object.
For instance, you may have a method as follows:
public void doSomething(SomeObject obj) {
//do someth...
How do I pass variables and data from PHP to JavaScript?
...("/your/url").done(function(data){
// What do I do with the data?
});
Now, the server just needs to contain a /your/url route/file that contains code that grabs the data and does something with it, in your case:
<$php
...
$val = myService->getValue(); // Makes an API and databas...
List comprehension vs map
... {x:x**2 for x in rangeNeg5}
)
Efficiency comparison for python3
map is now lazy:
% python3 -mtimeit -s 'xs=range(1000)' 'f=lambda x:x' 'z=map(f,xs)'
1000000 loops, best of 3: 0.336 usec per loop ^^^^^^^^^
Therefore if you will not be using all your data, or do not know ahead of tim...
What is a classpath and how do I set it?
...n you say:
MyClass mine = new MyClass();
The Java Virtual Machine will know where to find your compiled class.
It would be impractical to have the VM look through every folder on your machine, so you have to provide the VM a list of places to look. This is done by putting folder and jar files on...
How do I export UIImage array as a movie?
...erious problem: I have an NSArray with several UIImage objects. What I now want to do, is create movie from those UIImages . But I don't have any idea how to do so.
...
Getting user input [duplicate]
...
Makes more sense now.
– wizzwizz4
Jun 8 '16 at 14:04
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show 1 more comment
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Drawing an SVG file on a HTML5 canvas
...
EDIT Dec 16th, 2019
Path2D is supported by all major browsers now
EDIT November 5th, 2014
You can now use ctx.drawImage to draw HTMLImageElements that have a .svg source in some but not all browsers. Chrome, IE11, and Safari work, Firefox works with some bugs (but nightly has fixed them...
What goes into the “Controller” in “MVC”?
...f data. Back to you, view."
View: "Cool, I'll show the new set to the user now."
In the end of that section, you have an option: either the view can make a separate request, "give me the most recent data set", and thus be more pure, or the controller implicitly returns the new data set with the "de...
WebView link click open default browser
Right now I have an app that loads a webview and all the clicks are kept within the app. What I would like to do is when a certain link, for example, http://www.google.com is clicked within the app it opens the default browser. If anyone has some ideas please let me know!
...
SQL Server 2012 column identity increment jumping from 6 to 1000+ on 7th entry [duplicate]
...art your sql server? I have been running several instances for over a year now, not a single issue with sequences.
– Mithrandir
May 8 '14 at 19:24
3
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