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Convert string to nullable type (int, double, etc…)
...ng to do. Also you should probably not swallow all kinds of exceptions. At least re-throw OutOfMemoryException if you cannot narrow it down to a fixed set of exception types.
– Paul Groke
Jan 24 '13 at 16:23
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How to compare only date components from DateTime in EF?
...ons has been deprecated in favor of System.Data.Entity.DbFunctions for (at least) EF6. It may have been earlier than this.
– pquest
Sep 2 '14 at 19:55
4
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Library not loaded: /usr/local/opt/readline/lib/libreadline.6.2.dylib
...f you have no other dependencies on readline 7 then this is definitely the least disruptive approach.
– drew
Jun 16 '17 at 7:32
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Is there a standard function to check for null, undefined, or blank variables in JavaScript?
...ved and it's defined
}
If you can be sure that a variable is declared at least, you should directly check if it has a truthy value like shown above.
Further read: http://typeofnan.blogspot.com/2011/01/typeof-is-fast.html
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How to move screen without moving cursor in Vim?
...ck the state, etc. If you absolutely must make a system-wide remapping, at least swap two locks like caps <--> num - but the issue is more forgetting that it's on, because if you wanted it before, you'll keep using it, by whatever map. Risk breaking Vim before files/user/system.
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presentViewController:animated:YES view will not appear until user taps again
...le does something) you can trigger the main runloop by several means:
The least intrusive solution is to call CFRunLoopWakeUp:
[self presentViewController:vc animated:YES completion:nil];
CFRunLoopWakeUp(CFRunLoopGetCurrent());
Or you can enqueue an empty block to the main queue:
[self presentV...
How to replace multiple substrings of a string?
...of scanning the entire string every time per call, so the complexity is at least O(number of replacements * len(s)), plus whatever string pattern matching happens under the hood.
– ggorlen
Sep 16 at 1:33
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ASP.NET Bundles how to disable minification
...e instance to see if that was really it. It was... hopefully I can save at least one person the hours I wasted on this.
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SQL - using alias in Group By
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At least in PostgreSQL you can use the column number in the resultset in your GROUP BY clause:
SELECT
itemName as ItemName,
substring(itemName, 1,1) as FirstLetter,
Count(itemName)
FROM table1
GROUP BY 1, 2
Of course thi...
What is the purpose of the “role” attribute in HTML?
...become unnecessary for main.
Reason #3.
Update 7 years later (2020): As at least one commenter pointed out, this is now very useful for custom elements, and some spec work is underway to define the default accessibility role of a web component. Even if/once that API is standardized, there may be nee...