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Programmatic equivalent of default(Type)
...tting them to "default" - this works brilliantly. I use it when converting from a SqlDataReader to an object using reflection.
– Arno Peters
Jun 23 '13 at 9:13
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How to change users in TortoiseSVN
...ows for the server that hosts our subversion. I cleared this stored value from windows credentials and all is well.
http://windows.microsoft.com/en-us/windows7/remove-stored-passwords-certificates-and-other-credentials
sha...
In C++, what is a virtual base class?
... foo() ;
int m_iValue ;
} ;
When you'll try to access m_iValue from D, the compiler will protest, because in the hierarchy, it'll see two m_iValue, not one. And if you modify one, say, B::m_iValue (that is the A::m_iValue parent of B), C::m_iValue won't be modified (that is the A::m_iVal...
Difference between dispatch_async and dispatch_sync on serial queue?
...Your choice of concurrent or serial queue depends on if you need an output from a previous task for the next one. If you depend on the previous task, adopt the serial queue else take concurrent queue.
And lastly this is a way of penetrating back to the main thread when we are done with our business...
No mapping found for field in order to sort on in ElasticSearch
...ow deprecated in favor of "unmapped_type". This was done as part of #7039
From documentation: Before 1.4.0 there was the ignore_unmapped boolean parameter, which was not enough information to decide on the sort values to emit, and didn’t work for cross-index search. It is still supported but user...
How to show “Done” button on iPhone number pad
...mberTextField.text = @"";
}
-(void)doneWithNumberPad{
NSString *numberFromTheKeyboard = numberTextField.text;
[numberTextField resignFirstResponder];
}
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Repeating characters in VIM insert mode
... There's also the :normal command which lets you issue them from the command prompt. Occasionally quite useful.
– Mark Reed
Sep 3 '15 at 19:31
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Use grep to report back only line numbers
...her than using grep to get the entire matching line and then removing that from the output with cut or another tool. For completeness, you can also use Perl:
perl -nE '/pattern/ && say $.' filename
or Ruby:
ruby -ne 'puts $. if /pattern/' filename
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Check whether variable is number or string in JavaScript
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From the perspective of someone who has to maintain code, choosing this path could be confusing. "Why did they use substring and not pass any values? What business logic am I missing here?" At the very least, this needs to be...
Execute script after specific delay using JavaScript
...n you can't use sleep in javascript is because you'd block the entire page from doing anything in the meantime. Not a good plan. Use Javascript's event model and stay happy. Don't fight it!
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