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When should iteritems() be used instead of items()?
....items() returned a list of (key, value) pairs. In Python 3.x, .items() is now an itemview object, which behaves different - so it has to be iterated over, or materialised... So, list(dict.items()) is required for what was dict.items() in Python 2.x.
Python 2.7 also has a bit of a back-port for key...
How to stop /#/ in browser with react-router?
...outer>. From the histories documentation:
In a nutshell, a history knows how to listen to the browser's address bar for changes and parses the URL into a location object that the router can use to match routes and render the correct set of components.
Versions 2 and 3
In react-router 2 and...
How can I beautify JavaScript code using Command Line?
...an mix and match Java and Javascript in your Rhino run scripts, so if you know a little Java it shouldn't be too hard to get this running with text-streams as well.
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Static function variables in Swift
...
Swift 1.2 with Xcode 6.3 now supports static as expected. From the Xcode 6.3 beta release notes:
“static” methods and properties are now allowed in classes (as an
alias for “class final”). You are now allowed to declare static stored
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When is it better to use String.Format vs string concatenation?
...
I know I know. It was made in jest (have read the link btw before, which was a good read)
– nawfal
May 12 '13 at 11:24
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Inspect hovered element in Chrome?
...m, when I "inspect element", nothing shows for the tooltip in the html. I know I can set the Style to :hover , but I still can't see the html or css of the tooltip.
...
UIButton: how to center an image and a text using imageEdgeInsets and titleEdgeInsets?
...IEdgeInsetsMake(-15.0, 0.0, 0.0, -button.titleLabel.bounds.size.width)];
Now the image and the text will be centered (in this example, the image appears above the text).
Cheers.
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How to “properly” create a custom object in JavaScript?
...ype.toString= function() {
return 'Shape at '+this.x+', '+this.y;
};
Now to subclass it, in as much as you can call what JavaScript does subclassing. We do that by completely replacing that weird magic prototype property:
function Circle(x, y, r) {
Shape.call(this, x, y); // invoke the ba...
JavaScript closures vs. anonymous functions
...ree variable.
That free variable is called an upvalue of the closure F.
Now let's use this to figure out who uses closures and who doesn't (for the sake of explanation I have named the functions):
Case 1: Your Friend's Program
for (var i = 0; i < 10; i++) {
(function f() {
var i2...
What does set -e mean in a bash script?
...t - <(echo piping); echo continues, with false representing the command now erroring silently, will still print piping before exiting.
– bb010g
Aug 23 '19 at 7:26
add a com...