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Append a NumPy array to a NumPy array
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Actually one can always create an ordinary list of numpy arrays and convert it later.
In [1]: import numpy as np
In [2]: a = np.array([[1,2],[3,4]])
In [3]: b = np.array([[1,2],[3,4]])
In [4]: l = [a]
In [5]: l.append(b)
In [6]: l = np.array(l)
In [7]: l.shape
Out[7]: (2, 2, 2)
In [8]...
How do I make a composite key with SQL Server Management Studio?
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In design mode (right click table select modify) highlight both columns right click and choose set primary key
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run main class of Maven project [duplicate]
...d target dirs.
The script search for classes with main method, offering a select to choose one (Example with mavenized JMeld project)
$ mvnexec
1) org.jmeld.ui.JMeldComponent
2) org.jmeld.ui.text.FileDocument
3) org.jmeld.JMeld
4) org.jmeld.util.UIDefaultsPrint
5) org.jmeld.util.PrintPropert...
Blank space at top of UITextView in iOS 10
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In the Interface Builder,
Select the view controller which contains the UITextView.
Go to the attribute inspector.
Uncheck "Adjust Scroll View Insets."
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What's the most efficient test of whether a PHP string ends with another string?
...eedle), but this method requires that and copying it in full, and possibly converting the entire thing into lowercase to boot.
– David Harkness
Aug 9 '16 at 6:01
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Best way to change the background color for an NSView
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Thanks. I needed to convert the dirtyRect to a CGRect. Ammended last line to CGContextFillRect(context, NSRectToCGRect(dirtyRect)); Can you edit your answer?
– Ross
Feb 11 '11 at 21:48
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How to display pandas DataFrame of floats using a format string for columns?
...or some floats only, then I think you'll have to pre-modify the dataframe (converting those floats to strings):
import pandas as pd
df = pd.DataFrame([123.4567, 234.5678, 345.6789, 456.7890],
index=['foo','bar','baz','quux'],
columns=['cost'])
df['foo'] = df['cos...
Screenshot Apps for iPhone simulator [closed]
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I use iOS Simulator Cropper, it's the best application, you can even select the screenshot type that you want, if it's for the App Store, Market...
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Delete files older than 3 months old in a directory using .NET
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Here's a 1-liner lambda:
Directory.GetFiles(dirName)
.Select(f => new FileInfo(f))
.Where(f => f.LastAccessTime < DateTime.Now.AddMonths(-3))
.ToList()
.ForEach(f => f.Delete());
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Parallel.ForEach vs Task.Run and Task.WhenAll
...e that your second example can be shortened to
await Task.WhenAll(strings.Select(s => Task.Run(() => DoSomething(s)));
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