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When should the volatile keyword be used in C#?
... always access the current value of the field (it might be from the stack, etc). Marking a field as volatile ensures that the current value of the field is accessed by the instruction. This is useful when the value can be modified (in a non-locking scenario) by a concurrent thread in your program or...
Detecting 'stealth' web-crawlers
...HTML you can use plenty of tricks with comments, CDATA elements, entities, etc:
<a href="foo<!--bar-->"> (comment should not be removed)
<script>var haha = '<a href="bot">'</script>
<script>// <!-- </script> <!--><a href="bot"> <!-->
...
What is the difference between decodeURIComponent and decodeURI?
...
decodeURIComponent will decode URI special markers such as &, ?, #, etc, decodeURI will not.
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How to rename a table in SQL Server?
...ences to that table that may exist in stored procedures, views, functions, etc. A quick google can find one of the many tools that can do this for you. Or you can use a script that finds a given string in all these objects, and paste them as ALTER statements, and do a find-and-replace, then run them...
How to find the php.ini file used by the command line?
...t my answer...in my case I type sudo find / -iname php.ini and it founds /etc/php/7.0/apache2/php.ini the right place of the right php.ini config file of my machine that it wasn't found by php --ini or php -i | grep php.ini (both found /etc/php/7.0/cli/php.ini)
– NineCattoRule...
Is there any difference between GROUP BY and DISTINCT
....
Here are the most important operations:
FROM (including JOIN, APPLY, etc.)
WHERE
GROUP BY (can remove duplicates)
Aggregations
HAVING
Window functions
SELECT
DISTINCT (can remove duplicates)
UNION, INTERSECT, EXCEPT (can remove duplicates)
ORDER BY
OFFSET
LIMIT
As you can see, the logical or...
Unix command-line JSON parser? [closed]
... - Rich support for input / output formats - pretty-printing, strict JSON, etc [coming soon]
DOCUMENTED - Excellent command-line documentation with multiple examples for every command
It allows you to do powerful things really easily:
cat earthporn.json | underscore select '.data .title'
# [ 'Fja...
What is the best way to detect a mobile device?
...o(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|...
JavaFX and OpenJDK
...e packages for Linux distributions based upon OpenJDK (e.g. Redhat, Ubuntu etc) to create RPMs for the JDK and JRE that include JavaFX. Those software distributors, then need to place the generated packages in their standard distribution code repositories (e.g. fedora/red hat network yum repositori...
JS: Check if date is less than 1 hour ago?
...nt(yourDateString), 'hours');
It will give you integer value like 1,2,5,0etc so you can easily use condition check like:
if(hours < 1) {
Also, one more thing is you can get more accurate result of the time difference (in decimals like 1.2,1.5,0.7etc) to get this kind of result use this synta...