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How to insert a character in a string at a certain position?
... was suggested to use String for a better display output (instead of 1234.5 will be 1234.50 ). Therefore, I need a function that will take an int as parameter and return the properly formatted String with a decimal point 2 digits from the end.
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Checking for empty arrays: count vs empty
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4
These functions indeed differ when the array is not empty.
– Jacco
Feb 7 '10 at 14:40
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What's a simple way to get a text input popup dialog box on an iPhone
...ertView like this (screenshot taken from the iPhone 5.0 simulator in XCode 4.2):
When pressing any buttons, the regular delegate methods will be called and you can extract the textInput there like so:
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
NS...
How to use custom packages
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Edson Medina
8,04233 gold badges3434 silver badges4747 bronze badges
answered Feb 24 '13 at 11:14
kostixkostix
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Merging two arrays in .NET
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edited Mar 4 '16 at 1:01
Community♦
111 silver badge
answered Sep 12 '08 at 15:16
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count the frequency that a value occurs in a dataframe column
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446
Use groupby and count:
In [37]:
df = pd.DataFrame({'a':list('abssbab')})
df.groupby('a').coun...
Generate a heatmap in MatPlotLib using a scatter data set
...='lower')
plt.show()
This makes a 50x50 heatmap. If you want, say, 512x384, you can put bins=(512, 384) in the call to histogram2d.
Example:
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How can I change image tintColor in iOS and WatchKit
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iOS
For an iOS app, in Swift 3, 4 or 5:
theImageView.image = theImageView.image?.withRenderingMode(.alwaysTemplate)
theImageView.tintColor = UIColor.red
For Swift 2:
theImageView.image = theImageView.image?.imageWithRenderingMode(UIImageRenderingMode.A...
How can I check if a single character appears in a string?
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edited Mar 22 at 12:40
Ömer Erden
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answere...
Linux delete file with size 0 [duplicate]
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246
This will delete all the files in a directory (and below) that are size zero.
find /tmp -size ...