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.gitignore after commit [duplicate]

I have a git repository hosted on Github. After committing many files, I am realizing that I need to create .gitignore and exclude .exe , .obj files. ...
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How many system resources will be held for keeping 1,000,000 websocket open? [closed]

Websocket is good, but would it be able to handle 1,000,000 concurrent connections? How many system resources will be held for keeping 1,000,000 websocket open? ...
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How to check for valid email address? [duplicate]

Is there a good way to check a form input using regex to make sure it is a proper style email address? Been searching since last night and everybody that has answered peoples questions regarding this topic also seems to have problems with it if it is a subdomained email address. ...
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BASH copy all files except one

I would like to copy all files out of a dir except for one named Default.png. It seems that there are a number of ways to do this. What seems the most effective to you? ...
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Why is “throws Exception” necessary when calling a function?

Why compiler reports that methods show2() , show3() , and main() have 8 Answers 8...
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Can we write our own iterator in Java?

If I have a list containing [alice, bob, abigail, charlie] and I want to write an iterator such that it iterates over elements that begin with 'a', can I write my own ? How can I do that ? ...
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How to import existing Git repository into another?

I have a Git repository in a folder called XXX , and I have second Git repository called YYY . 15 Answers ...
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What are the most interesting equivalences arising from the Curry-Howard Isomorphism?

I came upon the Curry-Howard Isomorphism relatively late in my programming life, and perhaps this contributes to my being utterly fascinated by it. It implies that for every programming concept there exists a precise analogue in formal logic, and vice versa. Here's a "basic" list of such analogies...
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Count number of occurrences of a pattern in a file (even on same line)

When searching for number of occurrences of a string in a file, I generally use: 5 Answers ...
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How to sort a HashSet?

For lists, we use the Collections.sort(List) method. What if we want to sort a HashSet ? 19 Answers ...