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Test if a class has an attribute?
... @alexanderb you are of course right. I've updated my answer now. I must of not checked my answer against the compiler at the time! Thanks for pointing out the error
– RichardOD
Jun 23 '12 at 16:05
...
Show and hide a View with a slide up/down animation
...rstanding an applying the accepted answer. I needed a little more context. Now that I have figured it out, here is a full example:
MainActivity.java
public class MainActivity extends AppCompatActivity {
Button myButton;
View myView;
boolean isUp;
@Override
protected void on...
Is there a 'foreach' function in Python 3?
...-litb thing is that he is right... 'for' in python is literally 'foreach' known in other languages...in tcl for eg a 'for' loop would be something like for {stuff ran on beginning of loop} {condition here} {stuff that runs on each iteration} {commands here...} eg: for {set x 1} {$x <= 10} {incr x...
href image link download on click
...
Thanks for your comment, it's a good thing to know. Although you need modernizr, I now use it in all my projects so... I'll accept your answer as the new answer
– Pierre
May 1 '13 at 12:05
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Is there a python equivalent of Ruby's 'rvm'?
...stall both at once with virtualenv burrito.
Update: the correct answer is now probably pyenv.
For scientific computing, the corresponding tool is anaconda.
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Difference between numpy.array shape (R, 1) and (R,)
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1. The meaning of shapes in NumPy
You write, "I know literally it's list of numbers and list of lists where all list contains only a number" but that's a bit of an unhelpful way to think about it.
The best way to think about NumPy arrays is that they consist of two parts, ...
Explicitly calling return in a function or not
...l was originally asking (why explicit return is bad). And I would like to know right (the one right for anyone) answer as well :). Do you consider to provide your explanation for users of this site?
– Petr Matousu
Mar 30 '17 at 8:53
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Can you attach a UIGestureRecognizer to multiple views?
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iOS 9 now enforces a single view per gesture recogniser, I'd been using the interface builder method below, but now I get the following message when I try to use it (some details cut for brevity): WARNING: A Gesture recognizer (<...
JavaScript variables declare outside or inside loop?
... does not have block scope like many other C-like languages.
That is also known as lexical scope.
If you declare something like
var foo = function(){
for(var i = 0; i < 10; i++){
}
};
This gets hoisted to:
var foo = function(){
var i;
for(i = 0; i < 10; i++){
}
}
So ...
How do you use the ? : (conditional) operator in JavaScript?
...sion where an if...else
statement would be awkward. For
example:
var now = new Date();
var greeting = "Good" + ((now.getHours() > 17) ? " evening." : " day.");
The example creates a string
containing "Good evening." if it is
after 6pm. The equivalent code using
an if...else state...