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Why can't my program compile under Windows 7 in French? [closed]
I'm running Windows 7 French and I'm trying to compile this really basic program, but Visual Studio is being stubborn and refuses to comply. I also tried compiling it with both GCC 4.7 and Clang trunk on Coliru and I get more or less the same errors (output is below the code), though I think Colir...
Mean per group in a data.frame [duplicate]
... 1001, 2001, 3001, 4001, 5001,
1000, 2000, 3000, 4000, 5000), nrow = 10, ncol = 5, byrow = TRUE)
my.data
my.summary <- aggregate(list(my.data), by = list(my.group), FUN = function(x) { my.mean = mean(x, na.rm = TRUE) } )
my.summary
# Group.1 X1 X2 X3 ...
Setting transparent images background in IrfanView
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If you are using the batch conversion, in the window click "options" in the "Batch conversion settings-output format" and tick the two boxes "save transparent color" (one under "PNG" and the other under "ICO").
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How to check if a stored procedure exists before creating it
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A CREATE PROC statement must be the only statement in a batch when not using dynamic SQL so you cannot wrap a transaction around the DROP/CREATE when implemented in this manner. There has to be a GO (batch separator) after the DROP PROC call.
– Shiv
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How to select bottom most rows?
...y, and this is the correct implementation for Select BOTTOM. In a table of 5000 records, bottom 1000 is everything except top 4000.
– tzachs
Aug 5 '15 at 14:48
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Why use Dijkstra's Algorithm if Breadth First Search (BFS) can do the same thing faster?
...jkstra's algorithm could be implemented exactly like a BFS by swapping the queue with a priority queue.
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How do I reset a sequence in Oracle?
... Reset_Sequence_to_Data( 'JOBSTATE', 'JOBID' );
Reset_Sequence_to_Data( 'BATCH', 'BATCHID' );
END Reset_All_Sequences;
In my actual database there are around one hundred other sequences being reset through this mechanism, so there are 97 more calls to Reset_Sequence_to_Data in that procedure ab...
What is Autoloading; How do you use spl_autoload, __autoload and spl_autoload_register?
...tatic methods from your own Autoload class) that PHP will put into a stack/queue and call sequentially when a "new Class" is declared.
So for example:
spl_autoload_register('myAutoloader');
function myAutoloader($className)
{
$path = '/path/to/class/';
include $path.$className.'.php';
}...
Capybara Ambiguity Resolution
How do I resolve ambiguity in Capybara? For some reason I need links with the same values in a page but I can't create a test since I get the error
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What is the meaning and difference between subject, user and principal?
... gain from being able to make a distinction between a destination versus a queue or topic. The ability to choose between different levels of specificity in a taxonomy allows for a precision of expression that better communicates a writer's intent to a reader. When programming we have the luxury/curs...