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How to trim a string in SQL Server before 2017?
...d data in the future e.g.
ALTER TABLE Customer ADD
CONSTRAINT customer_names__whitespace
CHECK (
Names NOT LIKE ' %'
AND Names NOT LIKE '% '
AND Names NOT LIKE '% %'
);
Also consider disallowing other characters (tab, carriage return, ...
Setting an int to Infinity in C++
...int's maximum value:
#include <limits>
// ...
int a = std::numeric_limits<int>::max();
Which would be 2^31 - 1 (or 2 147 483 647) if int is 32 bits wide on your implementation.
If you really need infinity, use a floating point number type, like float or double. You can then get inf...
Small Haskell program compiled with GHC into huge binary
...braries are copied in verbatim.
Aside: since this is a graphics-intensive app, I'd definitely compile with ghc -O2
There's two things you can do.
Stripping symbols
An easy solution: strip the binary:
$ strip A
$ du -hs A
5.8M A
Strip discards symbols from the object file. They are generall...
How to create an AVD for Android 4.0
...icable).
Extract the complete armeabi-v7a folder to these directory; sysimg_armv7a-15_r01.zip (from, e.g. google's repository) goes to android-15, sysimg_armv7a-14_r02.zip to android-14.
I've not tried this procedure offline, I finally relented and used my broadband allowance at home, but these are...
How to add a Timeout to Console.ReadLine()?
I have a console app in which I want to give the user x seconds to respond to the prompt. If no input is made after a certain period of time, program logic should continue. We assume a timeout means empty response.
...
Export to CSV via PHP
...ay &$array)
{
if (count($array) == 0) {
return null;
}
ob_start();
$df = fopen("php://output", 'w');
fputcsv($df, array_keys(reset($array)));
foreach ($array as $row) {
fputcsv($df, $row);
}
fclose($df);
return ob_get_clean();
}
Then you can make your user...
In MySQL, how to copy the content of one table to another table within the same database?
...
INSERT INTO TARGET_TABLE SELECT * FROM SOURCE_TABLE;
EDIT: or if the tables have different structures you can also:
INSERT INTO TARGET_TABLE (`col1`,`col2`) SELECT `col1`,`col2` FROM SOURCE_TABLE;
EDIT: to constrain this..
INSERT INTO TAR...
How do I put variables inside javascript strings?
... => args[i++]);
}
Usage:
s = parse('hello %s, how are you doing', my_name);
This is only a simple example and does not take into account different kinds of data types (like %i, etc) or escaping of %s. But I hope it gives you some idea. I'm pretty sure there are also libraries out there whic...
What is the difference between mutex and critical section?
...ronization primitive (like an event or semaphore).
I wrote a quick sample app that compares the time between the two of them. On my system for 1,000,000 uncontended acquires and releases, a mutex takes over one second. A critical section takes ~50 ms for 1,000,000 acquires.
Here's the test code,...
Visual Studio Post Build Event - Copy to Relative Directory Location
...
One can use xcopy with wildcards and the appropriate switches to achieve a similar result, whilst maintaining the source folder's (tree) structure, such as: xcopy /i /e /s /y /f "<source>\MyFolder\*" "<destination>\MyFolder"
– Dr1Ku...