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What does %5B and %5D in POST requests stand for?

... As per this answer over here: str='foo%20%5B12%5D' encodes foo [12]: %20 is space %5B is '[' and %5D is ']' This is called percent encoding and is used in encoding special characters in the url parameter values. EDIT By the way as I was reading https://dev...
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ASP.Net error: “The type 'foo' exists in both ”temp1.dll“ and ”temp2.dll"

When running a web application project, at seemingly random times a page may fail with a CS0433 error: type exists in multiple DLL's. The DLL's are all generated DLL's residing in the "Temporary ASP.NET Files" directory. ...
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Default function arguments in Rust

...could also use an "arguments" struct and the From/Into traits: pub struct FooArgs { a: f64, b: i32, } impl Default for FooArgs { fn default() -> Self { FooArgs { a: 1.0, b: 1 } } } impl From<()> for FooArgs { fn from(_: ()) -> Self { Self::default()...
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What is the difference between == and equals() in Java?

...les have the same references (aka pointer to a memory address). String foo = new String("abc"); String bar = new String("abc"); if(foo==bar) // False (The objects are not the same) bar = foo; if(foo==bar) // True (Now the objects are the same) Whereas the equals() method tests whether tw...
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How and where are Annotations used in Java?

...compiler extensions). Consider for example the Override annotation: class Foo { @Override public boolean equals(Object other) { return ...; } } This one is actually built into the Java JDK. The compiler will signal an error, if some method is tagged with it, which does not overri...
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How to exclude a directory in find . command

...files that need to be sent as-is. Note [1]: If you want to exclude /tmp/foo/bar and you run find like this "find /tmp \(..." then you must specify -path /tmp/foo/bar. If on the other hand you run find like this cd /tmp; find . \(... then you must specify -path ./foo/bar. ...
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Use PHP composer to clone git repo

... I was encountering the following error: The requested package my-foo/bar could not be found in any version, there may be a typo in the package name. If you're forking another repo to make your own changes you will end up with a new repository. E.g: https://github.com/foo/bar.git => h...
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What are good uses for Python3's “Function Annotations”

... mm and an example of use: from mm import multimethod @multimethod def foo(a: int): return "an int" @multimethod def foo(a: int, b: str): return "an int and a string" if __name__ == '__main__': print("foo(1,'a') = {}".format(foo(1,'a'))) print("foo(7) = {}".format(foo(7))) Th...
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Named regular expression group “(?Pregexp)”: what does “P” stand for?

... which all begin with (?P . Currently there are two of them: (?P<foo>...) Similar to regular grouping parentheses, but the text matched by the group is accessible after the match has been performed, via the symbolic group name "foo". (?P=foo) Matches the same string as that mat...
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Which is better, return value or out parameter?

..., it stops the caller from having to declare the variable separately: int foo; GetValue(out foo); vs int foo = GetValue(); Out values also prevent method chaining like this: Console.WriteLine(GetValue().ToString("g")); (Indeed, that's one of the problems with property setters as well, and i...