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How to start a background process in Python?
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If you want your process to start in the background you can either use system() and call it in the same way your shell script did, or you can spawn it:
import os
os.spawnl(os.P_DETACH, 'some_long_running_command')
(or, alternatively, you may try the less portable os.P_NOWAIT flag).
See the d...
How to hash a password
...e combined salt+hash into a string for storage
string savedPasswordHash = Convert.ToBase64String(hashBytes);
DBContext.AddUser(new User { ..., Password = savedPasswordHash });
STEP 5 Verify the user-entered password against a stored password
/* Fetch the stored value */
string savedPasswordHash ...
Convert file path to a file URI?
Does the .NET Framework have any methods for converting a path (e.g. "C:\whatever.txt" ) into a file URI (e.g. "file:///C:/whatever.txt" )?
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What is a rune?
...nt a rune code-point, a string value can also contain runes. So, it can be converted to a []rune, or vice versa.
The unicode package http://golang.org/pkg/unicode/ can give a taste of the richness of the challenge.
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Convert from enum ordinal to enum type
...ethod to get the int value. After I get it in my other JSP page, I need to convert it to back to an ReportTypeEnum so that I can continue passing it.
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How do I see the current encoding of a file in Sublime Text?
...ugin you can view the encoding of the file on the status bar. Also you can convert the encoding of the file and extended another functionalities.
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How do I parse a string to a float or int?
...nteger: ValueError: invalid literal for int() with base 10: '545.222', but converting from a float to an int is a supported conversion.
– David Parks
May 7 '18 at 17:46
4
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Alternative to itoa() for converting integer to string C++? [duplicate]
I was wondering if there was an alternative to itoa() for converting an integer to a string because when I run it in visual Studio I get warnings, and when I try to build my program under Linux, I get a compilation error.
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surface plots in matplotlib
...ceforge.net/mpl_examples/mplot3d/surface3d_demo.py
here's pythonic way to convert your 3-tuples to 3 1d arrays.
data = [(1,2,3), (10,20,30), (11, 22, 33), (110, 220, 330)]
X,Y,Z = zip(*data)
In [7]: X
Out[7]: (1, 10, 11, 110)
In [8]: Y
Out[8]: (2, 20, 22, 220)
In [9]: Z
Out[9]: (3, 30, 33, 330)
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Pandas read_csv low_memory and dtype options
... do anything, since to numpy, a unicode is represented as object.
Usage of converters
@sparrow correctly points out the usage of converters to avoid pandas blowing up when encountering 'foobar' in a column specified as int. I would like to add that converters are really heavy and inefficient to use ...