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How to create NS_OPTIONS-style bitmask enumerations in Swift?
...tions.FirstOption
let opt2: MyOptions = .SecondOption
let opt3 = MyOptions(4)
And it also behaves like we'd expect options to behave:
let singleOption = MyOptions.FirstOption
let multipleOptions: MyOptions = singleOption | .SecondOption
if multipleOptions & .SecondOption != nil { // see n...
C/C++ check if one bit is set in, i.e. int variable
...
Peeyush Kushwaha
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answered Feb 7 '09 at 13:16
mouvicielmouviciel
...
Email validation using jQuery
...) {
var regex = /^([a-zA-Z0-9_.+-])+\@(([a-zA-Z0-9-])+\.)+([a-zA-Z0-9]{2,4})+$/;
return regex.test(email);
}
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String formatting: % vs. .format vs. string literal
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Dave
9,26744 gold badges2929 silver badges4646 bronze badges
answered Feb 22 '11 at 18:49
ClaudiuClaudiu
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Converting strings to floats in a DataFrame
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NOTE: pd.convert_objects has now been deprecated. You should use pd.Series.astype(float) or pd.to_numeric as described in other
answers.
This is available in 0.11. Forces conversion (or set's to nan)
This will work even when astype will ...
OS X Bash, 'watch' command
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Daniel PittmanDaniel Pittman
14.8k44 gold badges3636 silver badges3333 bronze badges
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Custom thread pool in Java 8 parallel stream
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408
There actually is a trick how to execute a parallel operation in a specific fork-join pool. If...
Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?
...mns), making it a new, mxm array. For this example let us say the array is 4x4 and I want to extract a 2x2 array from it.
7...
Group by multiple columns in dplyr, using string vector input
... <dbl>
1 A A 0.04095002
2 A B 0.24943935
3 A C -0.25783892
4 B A 0.15161805
5 ...
What's the simplest way to subtract a month from a date in Python?
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64
Try this:
def monthdelta(date, delta):
m, y = (date.month+delta) % 12, date.year + ((date.mo...