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What's the difference between lists and tuples?
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20 Answers
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Function Pointers in Java
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126
The Java idiom for function-pointer-like functionality is an an anonymous class implementing an...
Deleting lines from one file which are in another file
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grep -v -x -f f2 f1 should do the trick.
Explanation:
-v to select non-matching lines
-x to match whole lines only
-f f2 to get patterns from f2
One can instead use grep -F or fgrep to match fixed strings from f2 rather than patterns (...
Repeat each row of data.frame the number of times specified in a column
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Here's one solution:
df.expanded <- df[rep(row.names(df), df$freq), 1:2]
Result:
var1 var2
1 a d
2 b e
2.1 b e
3 c f
3.1 c f
3.2 c f
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How to pass optional arguments to a method in C++?
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edited May 25 '18 at 10:44
AustinWBryan
2,86133 gold badges1616 silver badges3535 bronze badges
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Twitter Bootstrap CSS affecting Google Maps
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With Bootstrap 2.0, this seemed to do the trick:
#mapCanvas img {
max-width: none;
}
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Working with huge files in VIM
I tried opening a huge (~2GB) file in VIM but it choked. I don't actually need to edit the file, just jump around efficiently.
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Properties vs Methods
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152
From the Choosing Between Properties and Methods section of Design Guidelines for Developing Cla...
NumPy: function for simultaneous max() and min()
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How to dynamically compose an OR query filter in Django?
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162
You could chain your queries as follows:
values = [1,2,3]
# Turn list of values into list of Q...