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Null check in an enhanced for loop
...mpty list won't fail.
If you get this list from somewhere else and don't know if it is ok or not you could create a utility method and use it like this:
for( Object o : safe( list ) ) {
// do whatever
}
And of course safe would be:
public static List safe( List other ) {
return other =...
Iterate over a Javascript associative array in sorted order
...
IE7 is at 0.5% and IE8 is at 8% as of now, fortunately.
– molnarg
Jul 10 '13 at 12:06
3
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How to map with index in Ruby?
...
the call to #index means this is now an O(N^2) loop also why the +2 ? :)
– rogerdpack
Mar 13 '17 at 16:40
2
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Using the last-child selector
...irst-child and changed by border-right to border-left for menu separators. Now IE8 likes my css.
– Scott B
Apr 8 '11 at 14:23
add a comment
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How do I sort a list of dictionaries by a value of the dictionary?
...':10}]
my_list.sort(lambda x,y : cmp(x['name'], y['name']))
my_list will now be what you want.
Or better:
Since Python 2.4, there's a key argument is both more efficient and neater:
my_list = sorted(my_list, key=lambda k: k['name'])
...the lambda is, IMO, easier to understand than operator.itemge...
Reading HTML content from a UIWebView
...ent.documentElement.outerHTML"]; has been a lifesaver for me several times now. It seems to return from the document as much as possible.
– ennalax
May 13 '12 at 21:30
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What's the difference between a continuation and a callback?
..., 4));
function pythagoras(x, y) {
return x * x + y * y;
}
Now if every operation (including addition, multiplication, etc.) were written in the form of functions then we would have:
console.log(pythagoras(3, 4));
function pythagoras(x, y) {
return add(square(x), square(...
Server is already running in Rails
... After doing this I'm still getting a "Port in use" for 3000. Anyone know how I can fix this? Thanks!
– daveomcd
Jan 12 '14 at 1:48
5
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How to reload or re-render the entire page using AngularJS
...angular.js file. If you are continuing to use $routeProvider then you will now need to include angular-route.js in your HTML:
– Alvaro Joao
Feb 4 '16 at 16:02
3
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Binding multiple events to a listener (without JQuery)?
...ng the same listener for multiple events on the one element is more common now to cover the various interface types in use, and Isaac's answer offers a good use of built–in methods to reduce the code (though less code is, of itself, not necessarily a bonus). Extended with ECMAScript 2015 arrow fun...