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How do I use arrays in C++?

...sed virtually everywhere. C++ provides abstractions that are easier to use and less error-prone ( std::vector<T> since C++98 and std::array<T, n> since C++11 ), so the need for arrays does not arise quite as often as it does in C. However, when you read legacy code or interact with a...
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What is the difference between location list and quickfix list in vim

The following is from the documentation about the quickfix list and location list. But I am not sure what actually different. The image below shows the same things from the location list and quickfix list. When do I use one or another in vimgrep and lvimgrep. ...
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Storing Images in PostgreSQL

... Updating to 2012, when we see that image sizes, and number of images, are growing and growing, in all applications... We need some distinction between "original image" and "processed image", like thumbnail. As Jcoby's answer says, there are two options, then, I recommend: ...
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What does “var FOO = FOO || {}” (assign a variable or an empty object to that variable) mean in Java

...s is used to create a namespace, i.e. a named object under which functions and variables can be created without unduly polluting the global object. The reason why it's used is so that if you have two (or more) files: var MY_NAMESPACE = MY_NAMESPACE || {}; MY_NAMESPACE.func1 = { } and var MY_NAM...
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Which one will execute faster, if (flag==0) or if (0==flag)?

... I haven't seen any correct answer yet (and there are already some) caveat: Nawaz did point out the user-defined trap. And I regret my hastily cast upvote on "stupidest question" because it seems that many did not get it right and it gives room for a nice discussio...
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Is there a way to automate the android sdk installation?

Now I have to download and install the Android SDK and AVD Manager, and then install the APIs, tools through the UI. Is there a way to automate this process? ...
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400 vs 422 response to POST of data

...est HTTP/1.1 status code for your use case. At the time of your question (and my original answer), RFC 7231 was not a thing; at which point I objected to 400 Bad Request because RFC 2616 said (with emphasis mine): The request could not be understood by the server due to malformed syntax. and ...
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Why do some claim that Java's implementation of generics is bad?

...gie - in .NET a List<byte> really is backed by a byte[] for example, and no boxing is required) Syntax for calling generic methods sucks (IMO) Syntax for constraints can get confusing Wildcarding is generally confusing Various restrictions due to the above - casting etc Good: Wildcarding a...
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how to convert from int to char*?

...number); char const *pchar = s.c_str(); //use char const* as target type And in C++03, what you're doing is just fine, except use const as: char const* pchar = temp_str.c_str(); //dont use cast share | ...
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Why do python lists have pop() but not push()

...ot called list.push given that there's already a list.pop that removes and returns the last element (that indexed at -1) and list.append semantic is consistent with that use? ...