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Map and Reduce in .NET
...that is extracted in the map step. Joel Martinez answer highlights that in my opinion better.
– xtofs
May 30 '17 at 15:58
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Entity Framework 4 Single() vs First() vs FirstOrDefault()
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Thanks. I can't see myself needing First() anymore, where Single() wouldn't be better. If I were less dense, I'm sure I could appreciate/understand when to use First() still.
– asfsadf
Aug 14 '10 at 22:57
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postgresql - replace all instances of a string within text field
...cs for all the details.
Update entire column with replacement text
Given my examples, maybe the safest option would be:
UPDATE table SET field = regexp_replace(field, '\mcat\M', 'dog', 'gi');
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Mockito verify order / sequence of method calls
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Looks like this might be my answer stackoverflow.com/questions/36573399/…
– Snekse
Apr 14 '17 at 17:03
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How to tell where a header file is included from?
... It should be noted that if you use in conjunction with "-o myObj.o", the output, not the compiled binary, goes into "myObj.o". -M has an implicit -E, so the compilation is not peformed. I found -MD is a very useful option instead, it performs the compile and puts the output in myOb...
Show or hide element in React
...Here is an alternative syntax for the ternary operator:
{ this.state.showMyComponent ? <MyComponent /> : null }
is equivalent to:
{ this.state.showMyComponent && <MyComponent /> }
Lean why
Also alternative syntax with display: 'none';
<MyComponent style={this.state....
Ruby on Rails console is hanging when loading
...ils console refuses to start; it just hangs. I haven't made any changes to my code, and other projects using the same version of Ruby and Ruby on Rails have no issue. When I finally Ctrl + C I get this stack trace, which points to Spring.
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Can you 'exit' a loop in PHP?
I have a loop that is doing some error checking in my PHP code. Originally it looked something like this...
6 Answers
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What is a non-capturing group in regular expressions?
...non-capturing group (?:).
(?:https?|ftp)://([^/\r\n]+)(/[^\r\n]*)?
Now, my result looks like this:
Match "http://stackoverflow.com/"
Group 1: "stackoverflow.com"
Group 2: "/"
Match "https://stackoverflow.com/questions/tagged/regex"
Group 1: "stackoverflow.com"
Group 2: "/que...
Unstage a deleted file in git
...ext
Finally I was able to restage the rest of the files and continue with my commit.
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