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Difference between left join and right join in SQL Server [duplicate]
...
Select * from Table1 left join Table2 ...
and
Select * from Table2 right join Table1 ...
are indeed completely interchangeable. Try however Table2 left join Table1 (or its identical pair, Table1 right join Table2) to see a difference. This query should give you mo...
Auto detect mobile browser (via user-agent?) [closed]
...ewing my web site from a mobile web browser so that I can then auto detect and display the appropriate version of my web site?
...
Vim: How to change the highlight color for search hits and quickfix selection
...ors/desert.vim. Color mappings are defined there with the hi[ghlight] command. The search highlighting is defined as
hi Search guibg=peru guifg=wheat
for the GUI and
hi Search cterm=NONE ctermfg=grey ctermbg=blue
for terminals.
You can override this setting in your .vimrc using the same com...
Is key-value observation (KVO) available in Swift?
...mework can help you accomplish what you wanted, rather than using KVO
Yes and no. KVO works on NSObject subclasses much as it always has. It does not work for classes that don't subclass NSObject. Swift does not (currently at least) have its own native observation system.
(See comments for how to ...
Why can't R's ifelse statements return vectors?
I've found R's ifelse statements to be pretty handy from time to time. For example:
9 Answers
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Using arrays or std::vectors in C++, what's the performance gap?
...hould be avoided. There is the problem you have to keep track of the size, and you need to delete them manually and do all sort of housekeeping.
Using arrays on the stack is also discouraged because you don't have range checking, and passing the array around will lose any information about its siz...
How many and which are the uses of “const” in C++?
...y obscure to me, one of these is const . You can use it in so many places and with so many different effects that is nearly impossible for a beginner to come out alive. Will some C++ guru explain once forever the various uses and whether and/or why not to use them?
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Retrieve filename from file descriptor in C
...Linux can track renames in some cases). To verify, stat the filename given and fstat the fd you have, and make sure st_dev and st_ino are the same.
Of course, not all file descriptors refer to files, and for those you'll see some odd text strings, such as pipe:[1538488]. Since all of the real filen...
How does UTF-8 “variable-width encoding” work?
The unicode standard has enough code-points in it that you need 4 bytes to store them all. That's what the UTF-32 encoding does. Yet the UTF-8 encoding somehow squeezes these into much smaller spaces by using something called "variable-width encoding".
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AngularJS : Differences among = & @ in directive scope? [duplicate]
...hould help tie things together: http://jsfiddle.net/jeremylikness/3pvte/
And explained ... if your directive looks like this:
<my-directive target="foo"/>
Then you have these possibilities for scope:
{ target : '=' }
This will bind scope.target (directive) to $scope.foo (outer scop...