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Java String remove all non numeric characters
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Try this code:
String str = "a12.334tyz.78m>x m>";
str = str.replaceAll("[^\\d.]", "");
Now str will contain "12.334.78".
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Qt: can't find -lGL error
...he error and in libgl1-... is for OpenGL, a fundamental dependency of Qt 5.m>x m>. This is a common error for devs when setting up for Qt development -- but once they install the OpenGL development lib they never see it again.
– pim>x m>elgrease
Jun 4 '15 at 23:04
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How to overwrite the previous print to stdout in python?
...') character to return to the start of the line without advancing to the nem>x m>t line:
for m>x m> in range(10):
print '{0}\r'.format(m>x m>),
print
The comma at the end of the print statement tells it not to go to the nem>x m>t line. The last print statement advances to the nem>x m>t line so your prompt won't overwri...
Way to get number of digits in an int?
...See my benchmark unit test below(wich may be flawed too i am no benchmark em>x m>pert). Over a large number of runs (100 000 000), the speed is 11s to 8s on my machine hardly twice as fast.
– Jean
Aug 20 '09 at 15:36
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What is Weak Head Normal Form?
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I'll try to give an em>x m>planation in simple terms. As others have pointed out, head normal form does not apply to Haskell, so I will not consider it here.
Normal form
An em>x m>pression in normal form is fully evaluated, and no sub-em>x m>pression could be...
How to check whether a variable is a class or not?
... inspect.isclass function.
>>> import inspect
>>> class m>X m>(object):
... pass
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>>> inspect.isclass(m>X m>)
True
>>> m>x m> = m>X m>()
>>> isinstance(m>x m>, m>X m>)
True
>>> y = 25
>>> isinstance(y, m>X m>)
False
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Targeting both 32bit and 64bit with Visual Studio in same solution/project
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Yes, you can target both m>x m>86 and m>x m>64 with the same code base in the same project. In general, things will Just Work if you create the right solution configurations in VS.NET (although P/Invoke to entirely unmanaged DLLs will most likely require some ...
Retrieving the last record in each group - MySQL
...ions, like almost all popular SQL implementations. With this standard syntam>x m>, we can write greatest-n-per-group queries:
WITH ranked_messages AS (
SELECT m.*, ROW_NUMBER() OVER (PARTITION BY name ORDER BY id DESC) AS rn
FROM messages AS m
)
SELECT * FROM ranked_messages WHERE rn = 1;
Below is...
Split column at delimiter in data frame [duplicate]
... split one column into two within at data frame based on a delimiter. For em>x m>ample,
6 Answers
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Normalize data in pandas
...0.932785 4.535396 0.598124
In [93]: df_norm = (df - df.mean()) / (df.mam>x m>() - df.min())
In [94]: df_norm
Out[94]:
a b c d
A 0.085789 -0.394348 0.337016 -0.109935
B -0.463830 0.164926 -0.650963 0.256714
C -0.158129 0.605652 -0.035090 -0.573389
D 0.536170 -0...