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What's the fastest way to merge/join data.frames in R?
....73 0.02 NA NA
1 aggregate 1 14.89 5.298932 14.89 0.00 NA NA
2 data.table 1 132.46 47.138790 131.70 0.08 NA NA
3 plyr 1 212.69 75.690391 211.57 0.56 NA NA
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Git, rewrite previous commit usernames and emails
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brauliobobrauliobo
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How to make the corners of a button round?
...yBottomRight">cut</item>
<item name="cornerSizeTopLeft">32dp</item>
<item name="cornerSizeBottomLeft">32dp</item>
</style>
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How to detect the currently pressed key?
... None = 0,
Down = 1,
Toggled = 2
}
[DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
private static extern short GetKeyState(int keyCode);
private static KeyStates GetKeyState(Keys key)
{
KeyStates state = KeyStates.None;
short ...
Read specific columns from a csv file with csv module?
...])
print(columns['street'])
With a file like
name,phone,street
Bob,0893,32 Silly
James,000,400 McHilly
Smithers,4442,23 Looped St.
Will output
>>>
['Bob', 'James', 'Smithers']
['0893', '000', '4442']
['32 Silly', '400 McHilly', '23 Looped St.']
Or alternatively if you want numerica...
Mockito : how to verify method was called on an object created within a method?
...
– Andras Balázs Lajtha
Jul 9 '17 at 7:32
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Mock framework vs MS Fakes frameworks
...s.StubIStudentRepository() // Generated by Fakes.
{
DoesStudentExistInt32 = (studentId) => { return new Student(); }
};
Notice in the MS Fakes example you create an entirely new implementation for the DoesStudentExist method (Note that it is called DoesStudentExistInt32 because the fakes fr...
How do I copy the contents of one stream to another?
...oid CopyStream(Stream input, Stream output)
{
byte[] buffer = new byte[32768];
int read;
while ((read = input.Read(buffer, 0, buffer.Length)) > 0)
{
output.Write (buffer, 0, read);
}
}
Note 1: This method will allow you to report on progress (x bytes read so far ...)...
Multi flavor app based on multi flavor library in Android Gradle
...his approach.
– Ali
Apr 3 '15 at 20:32
1
@An-droid it defines the library to be used for market1 ...
C# using streams
...ood article to help you understand MemoryStream. codeproject.com/Articles/832387/…
– Jiaji Li
Oct 20 '15 at 19:10
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