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Java String array: is there a size of method?
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Yes, .length (property-like, not a method):
String[] array = new String[10];
int size = array.length;
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Locate current file in IntelliJ
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edited Sep 10 '11 at 12:44
Jasper
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possible EventEmitter memory leak detected
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answered Mar 19 '12 at 10:30
Corey RichardsonCorey Richardson
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How can I remove the first line of a text file using bash/sed script?
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1073
Try tail:
tail -n +2 "$FILE"
-n x: Just print the last x lines. tail -n 5 would give you t...
How to set data attributes in HTML elements
I have a div with an attribute data-myval = "10" . I want to update its value; wouldn't it change if I use div.data('myval',20) ? Do I need to use div.attr('data-myval','20') only?
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How do I create test and train samples from one dataframe with pandas?
... would just use numpy's randn:
In [11]: df = pd.DataFrame(np.random.randn(100, 2))
In [12]: msk = np.random.rand(len(df)) < 0.8
In [13]: train = df[msk]
In [14]: test = df[~msk]
And just to see this has worked:
In [15]: len(test)
Out[15]: 21
In [16]: len(train)
Out[16]: 79
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Which is faster/best? SELECT * or SELECT column1, colum2, column3, etc
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edited Jun 4 '10 at 12:40
scunliffe
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#ifdef replacement in the Swift language
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1091
Yes you can do it.
In Swift you can still use the "#if/#else/#endif" preprocessor macros (al...
check if a std::vector contains a certain object? [duplicate]
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answered Aug 10 '10 at 15:57
YouYou
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