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Convert data.frame columns from factors to characters
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+1 for doing only what was necessary (i.e. not converting the entire data.frame to character). This solution is robust to a data.frame that contains mixed types.
– Joshua Ulrich
Aug 1 '13 at 21:42
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What is the difference between .map, .every, and .forEach?
I've always wondered what the difference between them were. They all seem to do the same thing...
4 Answers
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How to sort a list of strings?
What is the best way of creating an alphabetically sorted list in Python?
11 Answers
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PHP foreach change original array values
...ickly gets out of hand. If you are a novice and don't have full control of what you are doing, it is best to stay away from references. For more information about & operator take a look at this guide: Reference — What does this symbol mean in PHP?
For those who want to learn more about this pa...
range over interface{} which stores a slice
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What would you do if you had a pointer to a slice in interface{}? e.g. moredata := &[]int{1,2,3}
– Ryan Walls
Jun 9 '16 at 16:52
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ASP.NET MVC Performance
...nd some wild remarks that ASP.NET MVC is 30x faster than ASP.NET WebForms. What real performance difference is there, has this been measured and what are the performance benefits.
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Is it good practice to use java.lang.String.intern()?
...erned strings can't be garbage collected. And that is a FALSE assertion. What Michael's comments (correctly) say is more subtle than that.
– Stephen C
May 14 '12 at 8:06
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How to check if current thread is not main thread
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What do you mean by "under API 23 or higher"? That doesn't make much sense to me..Also the exact same answer was posted by AAnkit, below..
– Mike
Dec 2 '15 at 20:44
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How to split a file into equal parts, without breaking individual lines? [duplicate]
...nes, split has an option for this:
split --lines=75
If you need to know what that 75 should really be for N equal parts, its:
lines_per_part = int(total_lines + N - 1) / N
where total lines can be obtained with wc -l.
See the following script for an example:
#!/usr/bin/bash
# Configuration ...
CSS selector - element with a given child [duplicate]
...at example why developers accept other means to an end in order to achieve what they want. Too bad...
– DerpyNerd
Mar 17 '17 at 18:28
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