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Iterate through a C++ Vector using a 'for' loop
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96
Is there any reason I don't see this in C++? Is it bad practice?
No. It is not a bad pract...
Play a Sound with Python [duplicate]
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Bo Persson
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answered Sep 29 '11 at 5:42
ramkumarramku...
Unable to load config info from /usr/local/ssl/openssl.cnf on Windows
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Or C:\OpenSSL-Win64\bin\openssl.cfg in 64bits systems
– borjab
Nov 13 '14 at 9:59
13
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More elegant “ps aux | grep -v grep”
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DarkDustDarkDust
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How to set the Default Page in ASP.NET?
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Tip #84: Did you know… How to set a Start page for your Web Site in Visual Web Developer?
Simply right click on the page you want to be the start page and say "set as start page".
As noted in the comment below by Adam Tuliper ...
Best way to detect that HTML5 is not supported
...hy does the double negation (!!) stands for?
– user669677
Mar 4 '13 at 18:22
16
If Canvas isn't t...
Convert a positive number to negative in C#
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Joe WhiteJoe White
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How do you query for “is not null” in Mongo?
...: "http://example.com/bar.jpg" }
{ "_id" : ObjectId("544540c51b5cf91c4893eb96"), "imageUrl" : "http://example.com/foo.png" }
{ "_id" : ObjectId("544540c91b5cf91c4893eb97"), "imageUrl" : "http://example.com/bar.png" }
{ "_id" : ObjectId("544540ed1b5cf91c4893eb98"), "otherField" : 1 }
{ "_id" : Object...
When is assembly faster than C?
...les that still need compiler-specific code, see
Getting the high part of 64 bit integer multiplication: A portable version using uint64_t for 32x32 => 64-bit multiplies fails to optimize on a 64-bit CPU, so you need intrinsics or __int128 for efficient code on 64-bit systems.
_umul128 on Windo...
Assign pandas dataframe column dtypes
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1 b 2 2018-05-02
df.dtypes
x object
y int64
z datetime64[ns]
dtype: object
and confirm the dtype is updated.
OLD/DEPRECATED ANSWER for pandas 0.12 - 0.16: You can use convert_objects to infer better dtypes:
In [21]: df
Out[21]:
x y
0 a 1
1 b 2
In ...