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How do I shuffle an array in Swift?
How do I randomize or shuffle the elements within an array in Swift? For example, if my array consists of 52 playing cards, I want to shuffle the array in order to shuffle the deck.
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What is the preferred Bash shebang?
Is there any Bash shebang objectively better than the others for most uses?
5 Answers
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What is the maximum length of a Push Notification alert text?
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The real limits for the alert text are not documented anywhere.
The only thing the documentation says is:
In iOS 8 and later, the maximum size allowed for a notification payload is 2 kilobytes; Apple Push Notification Service refuses any ...
How to return dictionary keys as a list in Python?
In Python 2.7 , I could get dictionary keys , values , or items as a list:
8 Answers
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How to capture UIView to UIImage without loss of quality on retina display
My code works fine for normal devices but creates blurry images on retina devices.
17 Answers
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How to print a groupby object
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Simply do:
grouped_df = df.groupby('A')
for key, item in grouped_df:
print(grouped_df.get_group(key), "\n\n")
This also works,
grouped_df = df.groupby('A')
gb = grouped_df.groups
for key, values in gb.iteritems():
print(df.ix[values], "\n\n")
For s...
Difference between Java SE/EE/ME?
...with some basics, so I will write simple programs that create files, directories, edit XML files and so on, nothing too complex for now.
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Eclipse - java.lang.ClassNotFoundException
...lassNotFoundException". When running "mvn test" from console - everything works fine. Also, there are no problems reported in Eclipse.
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Dialog throwing "Unable to add window — token null is not for an application” with getApplication()
...ng to create an AlertDialog which requires a Context as a parameter. This works as expected if I use:
28 Answers
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How to print Boolean flag in NSLog?
...= YES;
NSLog(flag ? @"Yes" : @"No");
?: is the ternary conditional operator of the form:
condition ? result_if_true : result_if_false
Substitute actual log strings accordingly where appropriate.
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