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Extract substring using regexp in plain bash
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Using pure bash :
$ cat file.txt
US/Central - 10:26 PM (CST)
$ while read a b time x; do [[ $b == - ]] && echo $time; done < file.txt
another solution with bash regex :
$ [[ "US/Central - 10:26 PM (CST)" =~ -[[:space...
Why does Lua have no “continue” statement?
I have been dealing a lot with Lua in the past few months, and I really like most of the features but I'm still missing something among those:
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Is there a shortcut in Eclipse to Re-run the most recently launched program?
One of the most frequent thing I do with Eclipse is to re-run the last program. I do it by going to Run -> Run History -> [top most item] .
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How do I copy a hash in Ruby?
I'll admit that I'm a bit of a ruby newbie (writing rake scripts, now). In most languages, copy constructors are easy to find. Half an hour of searching didn't find it in ruby. I want to create a copy of the hash so that I can modify it without affecting the original instance.
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typedef struct vs struct definitions [duplicate]
I'm a beginner in C programming, but I was wondering what's the difference between using typedef when defining a structure versus not using typedef . It seems to me like there's really no difference, they accomplish the same goal.
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Socket.IO Authentication
I am trying to use Socket.IO in Node.js, and am trying to allow the server to give an identity to each of the Socket.IO clients. As the socket code is outside the scope of the http server code, it doesn't have easy access to the request information sent, so I'm assuming it will need to be sent up d...
How to declare strings in C [duplicate]
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This link should satisfy your curiosity.
Basically (forgetting your third example which is bad), the different between 1 and 2 is that 1 allocates space for a pointer to the array.
But in the code, you can manipulate them as pointers all the same -- only thing, you cann...
Traverse all the Nodes of a JSON Object Tree with JavaScript
... foo:"bar",
arr:[1,2,3],
subo: {
foo2:"bar2"
}
};
//called with every property and its value
function process(key,value) {
console.log(key + " : "+value);
}
function traverse(o,func) {
for (var i in o) {
func.apply(this,[i,o[i]]);
if (o[i] !== null &a...
Does it make sense to use “as” instead of a cast even if there is no null check? [closed]
...following solution is not recommended for use in production code. If you really hate such a fundamental construct in C#, you might consider switching to VB or some other language.
In case one desperately hates the cast syntax, he/she can write an extension method to mimic the cast:
public static T...
Unable to start debugging because the object invoked has disconnected from its clients
...e control engine
Review the list of extensions and plugins. Try to disable all or some of them
Close Visual Studio and kill all the development processes: devenv, mspdbsrv, vcpkgsrv, msbuild, msvsmon, vshub, vstest etc
Remove .suo, .ncb, .VC.db, .VC.VC.opendb files of the solution as well as .vs dir...