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Is having an 'OR' in an INNER JOIN condition a bad idea?
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114
This kind of JOIN is not optimizable to a HASH JOIN or a MERGE JOIN.
It can be expressed as a c...
How to check if std::map contains a key without doing insert?
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PotatoswatterPotatoswatter
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What is the difference between “#!/usr/bin/env bash” and “#!/usr/bin/bash”?
...ven less portable and break on fairly recent systems (e.g. even Ubuntu 16.04 if not later).
Another downside is that since you aren't calling an explicit executable, it's got the potential for mistakes, and on multiuser systems security problems (if someone managed to get their executable called ba...
How to trim leading and trailing white spaces of a string?
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answered Mar 27 '14 at 12:52
peterSOpeterSO
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Java Map equivalent in C#
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184
You can index Dictionary, you didn't need 'get'.
Dictionary<string,string> example = new ...
Java unchecked: unchecked generic array creation for varargs parameter
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answered Jan 15 '14 at 23:42
newacctnewacct
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Convert floats to ints in Pandas?
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df
Out[33]:
a
0 0.0000000
1 1.0000000
2 2.0000000
3 3.0000000
4 4.0000000
pd.options.display.float_format = '{:,.0f}'.format
df
Out[35]:
a
0 0
1 1
2 2
3 3
4 4
share
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improv...
Python naming conventions for modules
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answered Apr 2 '09 at 22:34
Stephan202Stephan202
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Converting PKCS#12 certificate into PEM using OpenSSL
I have OpenSSL x64 on Windows 7 which I downloaded from openssl-for-windows on Google Code . I'm attempting to run:
5 Answ...