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What is Hindley-Milner?
...er system is that each well-typed term has a unique "best" type, which is called the principal type. The principal type of the list-length function is "for any a, function from list of a to integer". Here a is a so-called "type parameter," which is explicit in lambda calculus but implicit in most ...
UISegmentedControl below UINavigationbar in iOS 7
...WillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[self _moveHairline:YES];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
[self _moveHairline:NO];
}
- (void)_moveHairline:(BOOL)appearing
{
// move the hairline below the segmentbar
...
How to “inverse match” with regex?
...place of .{6}
Edit (again): Note that lookaheads and lookbehinds are generally not the right way to "inverse" a regular expression match. Regexps aren't really set up for doing negative matching, they leave that to whatever language you are using them with.
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How to rename a table in SQL Server?
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And to add, don't accidentally put the schema in the 'NewName' field, otherwise your table might end up looking something like dbo.dbo.NewName.
– Michael Plautz
Jan 23 '17 at 21:12
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Using comparison operators in Scala's pattern matching system
...t; println("less than ten")
}
Edit: Note that this is more than superficially different to putting an if after the =>, because a pattern won't match if the guard is not true.
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Compiling simple Hello World program on OS X via command line
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@mathepic: That's 1 opinion. Personally I find it clearer to not to use it.
– Martin York
Nov 2 '10 at 3:31
1
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MongoDB: How to update multiple documents with a single command?
...: 'field1', field2: 'field2'})
New in version 3.2
Params::
{}: select all records updated
Keyword argument multi not taken
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Efficient SQL test query or validation query that will work across all (or most) databases
...for idleness. For example, the JDBC pooling library c3p0 has a property called preferredTestQuery , which gets executed on the connection at configured intervals. Similarly, Apache Commons DBCP has validationQuery .
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How to query nested objects?
...iness logic, then run a single query at the end: find(conditions, fields, callback);
– Ryan Wheale
May 21 '14 at 2:17
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Is returning by rvalue reference more efficient?
... I had always assumed the dangling reference problem went away automagically when the return type was an r-value reference. Glad I got that straighted out before it bit me. Stack smashing bugs suck.
– deft_code
Jul 15 '09 at 3:03
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