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not None test in Python [duplicate]
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From, Programming Recommendations, PEP 8:
Comparisons to singletons like None should always be done with is or is not, never the equality operators.
Also, beware of writing if x when you really mean if x is not None — e.g....
Disable a Button
... I do believe that the IBOutlet is needed if you are to disable the button from within another function.
– user9470831
Mar 10 '19 at 2:05
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Java: function for arrays like PHP's join()?
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Starting from Java8 it is possible to use String.join().
String.join(", ", new String[]{"Hello", "World", "!"})
Generates:
Hello, World, !
Otherwise, Apache Commons Lang has a StringUtils class which has a join function which wi...
How to get UTC timestamp in Ruby?
... purposes or storing the timestamp in a database, you can readily get that from the object. But that depends very much on your intended use.
Saying that »a true timestamp is the number of seconds since the Unix epoch« is a little missing the point, as that is one way of representing a point in ti...
Is it possible to have a multi-line comments in R? [duplicate]
I found this old thread (from over a year ago), which explains how come R doesn't support a multi-line comments (like /* comment */ of PHP, for example).
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How to navigate back to the last cursor position in Visual Studio?
... examples of things done right. In some ways, VS learned a few good things from emacs with shortcuts that are a sequence of two letters, but ultimately screwed up on other parts with the choice of non-alphanumeric bindings, combined with a broken low-level keyboard handling.
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Invalid date format specification in gemspec
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This will remove the string from the specification file: "find . -type f | xargs perl -pi -e 's/ 00:00:00\.000000000Z//'"
– Rainer Blessing
Nov 26 '11 at 21:52
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Lightweight SQL editor for Eclipse [closed]
...ing / coloring to eclipse
you can install Data tools platform extender sdk from "install new software", under Database Development
or enter site location directly
http://download.eclipse.org/datatools/updates
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Converting String to “Character” array in Java
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ArrayUtils is from commons-lang, not JDK, right?
– Eric Wang
Feb 21 '19 at 14:56
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Max length UITextField
...count <= 10
}
The most important part of this code is the conversion from range (NSRange) to rangeOfTextToReplace (Range<String.Index>). See this video tutorial to understand why this conversion is important.
To make this code work properly, you should also set the textField's smartInser...