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How to sort by two fields in Java?
I have array of objects person (int age; String name;) .
16 Answers
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Running Bash commands in Python
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It's better use shlex.split() instead string.split() in this case
– Alexey Sviridov
May 24 '18 at 3:51
4
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Changing the current working directory in Java?
...t subsequent creations of Files, but not e.g. FileOutputStreams.
The File(String parent, String child) constructor can help if you build up your directory path separately from your file path, allowing easier swapping.
An alternative is to set up a script to run Java from a different directory, or ...
How to name variables on the fly?
...ax for assign:
assign(x, value)
x: a variable name, given as a character string. No coercion is done, and the first element of a character vector of length greater than one will be used, with a warning.
value: value to be assigned to x.
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Evaluate empty or null JSTL c tags
How can I validate if a String is null or empty using the c tags of JSTL ?
8 Answers
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Turning multi-line string into single comma-separated
Let's say I have the following string:
17 Answers
17
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Java string split with “.” (dot) [duplicate]
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You need to escape the dot if you want to split on a literal dot:
String extensionRemoved = filename.split("\\.")[0];
Otherwise you are splitting on the regex ., which means "any character".
Note the double backslash needed to create a single backslash in the regex.
You're getting an A...
Create an array with same element repeated multiple times
...ate (05/11/2019):
Another way, without using fill or from, that works for string of any length:
Array.apply(null, Array(3)).map(_ => 'abc') // ['abc', 'abc', 'abc']
Same as above answer. Adding for sake of completeness.
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How can I replace every occurrence of a String in a file with PowerShell?
...("c:\bla.txt", $content)
This has the advantage of working with a single String instead of a String-array as with Get-Content. The methods also take care of the encoding of the file (UTF-8 BOM, etc.) without you having to take care most of the time.
Also the methods don't mess up the line endings...
ISO time (ISO 8601) in Python
... like to take its creation time, and convert it to an ISO time (ISO 8601) string while preserving the fact that it was created in the Eastern Time Zone (ET) .
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