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What's the use/meaning of the @ character in variable names in C#?

I discovered that you can start your variable name with a '@' character in C#. In my C# project I was using a web service (I added a web reference to my project) that was written in Java. One of the interface objects defined in the WSDL had a member variable with the name "params". Obviously this i...
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What is a predicate in c#? [duplicate]

... functional construct providing a convenient way of basically testing if something is true of a given T object. For example suppose I have a class: class Person { public string Name { get; set; } public int Age { get; set; } } Now let's say I have a List<Person> people and I want t...
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Integer division: How do you produce a double?

...conversions do not lose information about the overall magnitude of a numeric value. [...] Conversion of an int or a long value to float, or of a long value to double, may result in loss of precision-that is, the result may lose some of the least significant bits of the value....
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Set icon for Android application

...e-ldpi (120 dpi, Low density screen) - 36px x 36px drawable-mdpi (160 dpi, Medium density screen) - 48px x 48px drawable-hdpi (240 dpi, High density screen) - 72px x 72px drawable-xhdpi (320 dpi, Extra-high density screen) - 96px x 96px drawable-xxhdpi (480 dpi, Extra-extra-high density screen) - 14...
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What is the purpose of the implicit grant authorization type in OAuth 2?

I don't know if I just have some kind of blind spot or what, but I've read the OAuth 2 spec many times over and perused the mailing list archives, and I have yet to find a good explanation of why the Implicit Grant flow for obtaining access tokens has been developed. Compared to the Authorization Co...
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Are the days of passing const std::string & as a parameter over?

...es not know or care about C; all A knows about is B. That is, C is an implementation detail of B. Let's say that A is defined as follows: void A() { B("value"); } If B and C take the string by const&, then it looks something like this: void B(const std::string &str) { C(str); } voi...
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Finding all objects that have a given property inside a collection [duplicate]

I have some complicated object, such as a Cat, which has many properties, such as age, favorite cat food, and so forth. 2...
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Is there a way to use shell_exec without waiting for the command to complete?

... How about adding. "> /dev/null 2>/dev/null &" shell_exec('php measurePerformance.php 47 844 email@yahoo.com > /dev/null 2>/dev/null &'); Note this also gets rid of the stdio and stderr. share ...
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How to squash commits in git after they have been pushed?

...git push origin +master Difference between --force and + From the documentation of git push: Note that --force applies to all the refs that are pushed, hence using it with push.default set to matching or with multiple push destinations configured with remote.*.push may overwrite refs o...
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Node.js: what is ENOSPC error and how to solve?

...h takes up 540 bytes (32-bit system), or 1 kB (double - on 64-bit). This comes out of kernel memory, which is unswappable. So, assuming you set the max at 524288, and all were used (improbable), you'd be using approx. 256MB/512MB of 32-bit/64-bit kernel memory. – Murali Krishna...