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How can I limit Parallel.ForEach?
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You can specify a MaxDegreeOfParallelism in a ParallelOptions parameter:
Parallel.ForEach(
listOfWebpages,
new ParallelOptions { MaxDegreeOfParallelism = 4 },
webpage => { Download(webpage); }
);
MSDN: Parallel.ForEach
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Convert Java Array to Iterable
...endency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>15.0</version>
<type>jar</type>
</dependency>
For Java8: (from Jin Kwon's answer)
final int[] arr = {1, 2, 3};
final PrimitiveIterator.OfIn...
How to get a pixel's x,y coordinate color from an image?
Is there any way to check if a selected(x,y) point of a PNG image is transparent?
4 Answers
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Run a single test method with maven
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Wild card characters also work; both in the method name and class name.
If you're testing in a multi-module project, specify the module that the test is in with -pl <module-name>.
For integration tests use it.test=... option instead of test=...:
mvn -pl <module-name> -Dit.test=TestC...
How to copy text to clipboard/pasteboard with Swift
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If all you want is plain text, you can just use the string property. It's both readable and writable:
// write to clipboard
UIPasteboard.general.string = "Hello world"
// read from clipboard
let content = UIPasteboard.gener...
Take all my changes on the current branch and move them to a new branch in Git
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If you haven't been committing anything yet, you're already in the right position.
Create a new branch: git checkout -b edge
Your files haven't changed. Just git add what needs to and commit as usual.
When you're done com...
How to find the size of an array in postgresql
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As vyegorov mentioned, array_length will do the trick. Or if you know that the array is 1-dimensional (which is likely) and are running PostgreSQL 9.4 or higher, you can use cardinality:
SELECT cardinality(id) FROM example;
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How to append to New Line in Node.js
...ething else that doesn't render non-Windows newlines. Try opening it in a different viewer/editor (e.g. Wordpad).
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Remove blank lines with grep
...s very misleading. -e is a (POSIX-)definition for: This can be used to specify multiple search patterns, or to protect a pattern beginning with a hyphen (-). (from the manual). Grep already expects a (basic) regular expression by default. For this pattern, you may leave out -e entirely: grep -v '^[[...
How to convert a string to lower case in Bash?
...ing, or does your last example (in Bash) actually do something completely different? It works for "ABX", but if you instead make word="Hi All" like the other examples, it returns ha, not hi all. It only works for the capitalized letters and skips the already-lowercased letters.
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