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Why can't I use a list as a dict key in python?
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11 Answers
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jQuery map vs. each
...ion you can potentially waste a lot of memory.
For example:
var items = [1,2,3,4];
$.each(items, function() {
alert('this is ' + this);
});
var newItems = $.map(items, function(i) {
return i + 1;
});
// newItems is [2,3,4,5]
You can also use the map function to remove an item from an array...
Can you have if-then-else logic in SQL? [duplicate]
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106
You can make the following sql query
IF ((SELECT COUNT(*) FROM table1 WHERE project = 1) >...
getting the screen density programmatically in android?
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19 Answers
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How do you match only valid roman numerals with a regular expression?
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16 Answers
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How to use Active Support core extensions
I have Active Support 3.0.3 installed and Rails 3.0.3 with Ruby 1.8.7.
5 Answers
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How to create custom easing function with Core Animation?
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// this should be a function that takes a time value between
// 0.0 and 1.0 (where 0.0 is the beginning of the animation
// and 1.0 is the end) and returns a scale factor where 0.0
// would produce the starting value and 1.0 would produce the
// ending value
typedef double (^KeyframeParametric...
Best way to merge two maps and sum the values of same key?
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15 Answers
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use Winmerge inside of Git to file diff
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113
Update June 2015, 6 years later:
As detailed in "git mergetool winmerge", a simple git config...
Checking images for similarity with OpenCV
...lue (maybe a percentage) that indicates how similar these images are? E.g. 100% would be returned if the same image was passed twice, 0% would be returned if the images were totally different.
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