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map function for objects (instead of arrays)
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Is the size of C “int” 2 bytes or 4 bytes?
Does an Integer variable in C occupy 2 bytes or 4 bytes? What are the factors that it depends on?
13 Answers
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Python assigning multiple variables to same value? list behavior
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274
If you're coming to Python from a language in the C/Java/etc. family, it may help you to stop ...
What's the difference between eval, exec, and compile?
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542
The short answer, or TL;DR
Basically, eval is used to evaluate a single dynamically generated P...
How to map and remove nil values in Ruby
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Ruby 2.7+
There is now!
Ruby 2.7 is introducing filter_map for this exact purpose. It's idiom...
How can I do an asc and desc sort using underscore.js?
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You can use .sortBy, it will always return an ascending list:
_.sortBy([2, 3, 1], function(num) {
return num;
}); // [1, 2, 3]
But you can use the .reverse method to get it descending:
var array = _.sortBy([2, 3, 1], function(num) {
return num;
});
console.log(array); // [1, 2, 3]
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Why does changing 0.1f to 0 slow down performance by 10x?
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1627
Welcome to the world of denormalized floating-point! They can wreak havoc on performance!!!
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Omitting the second expression when using the if-else shorthand
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269
This is also an option:
x==2 && dosomething();
dosomething() will only be called if...
How many characters can UTF-8 encode?
If UTF-8 is 8 bits, does it not mean that there can be only maximum of 256 different characters?
10 Answers
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Extracting specific columns from a data frame
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answered Apr 19 '15 at 21:19
Sam FirkeSam Firke
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