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What is the proper way to check for null values?
...y has downvoted this answer yet. This is semantically completely different from what the OP wants to do.
– Timwi
Mar 22 '12 at 15:27
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Action bar navigation modes are deprecated in Android L
...w i/o 2014 application's apk is available for download, and as you can see from plus.google.com/+RomanNurik/posts/PD6MS3feXTT, there are plenty of toolbar styles used. We just have to wait for the source code, and explore it then :(
– Sandra
Jul 16 '14 at 9:26
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Preloading images with jQuery
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From my experience, preloading an image into the DOM makes the browser aware of its existence and for it to be properly cached. Otherwise, the image only exists in memory which only works for single page apps.
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Random alpha-numeric string in JavaScript? [duplicate]
...ch. I tried using it, and it seems to have some problems. As you can see from THIS screenshot, it sometimes generates strings that aren't the specified length. I put your randomString(..) function in a for(var i=0;i<50;i++){} loop that generated 50 random strings, and the last one is three cha...
How do I create a variable number of variables?
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Instead of a dictionary you can also use namedtuple from the collections module, which makes access easier.
For example:
# using dictionary
variables = {}
variables["first"] = 34
variables["second"] = 45
print(variables["first"], variables["second"])
# using namedtuple
Vari...
twitter bootstrap typeahead ajax example
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Starting from Bootstrap 2.1.0:
HTML:
<input type='text' class='ajax-typeahead' data-link='your-json-link' />
Javascript:
$('.ajax-typeahead').typeahead({
source: function(query, process) {
return $.ajax({
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Javascript - sort array based on another array
...also provide a callback here), (3) replace each of the pairs with the item from the itemArray at the index the pair originated from.
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How to sort a HashMap in Java [duplicate]
...hoice of name for the class... should be something like SortedMap instead. From the name, I'd think it's not a Map at all but some kind of Tree... the Tree part of TreeMap is really more of an implementation detail that shouldn't concern the user of the class at all.
– ArtOfWar...
Integer division with remainder in JavaScript?
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% works on floats in JavaScript (this differs from many other languages), which is perhaps not desired: 3.5 % 2 evaluates to 1.5. Make sure to handle (parseInt, floor, etc.) as required
– user166390
Nov 19 '10 at 19:09
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Better explanation of when to use Imports/Depends
... use "Depends").
A "Depends" directive attempts to ensure that a function from another package is available by attaching the other package to the main search path (i.e. the list of environments returned by search()). This strategy can, however, be thwarted if another package, loaded later, places a...