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How to check if any flags of a flag combination are set?
... {
CheckIsEnum<T>(true);
long lValue = Convert.ToInt64(value);
long lFlag = Convert.ToInt64(flag);
return (lValue & lFlag) != 0;
}
public static IEnumerable<T> GetFlags<T>(this T value) where T : struct
{
CheckIsEnum<T>...
Unpivot with column name
...le expression can be fully avoided if there are strictly no null values in base table)
select *
from
(
select name, subject,
case subject
when 'Maths' then maths
when 'Science' then science
when 'English' then english
end as Marks
from studentmarks
Cross Join (values('Ma...
How to set JVM parameters for Junit Unit Tests?
...pertyVariables>
<java.protocol.handler.pkgs>com.zunix.base</java.protocol.handler.pkgs>
<log4j.configuration>log4j-core.properties</log4j.configuration>
</systemPropertyVariables>
</configuration>
</plugin>
http://mav...
Tricks to manage the available memory in an R session
... available memory of an interactive R session? I use the functions below [based on postings by Petr Pikal and David Hinds to the r-help list in 2004] to list (and/or sort) the largest objects and to occassionally rm() some of them. But by far the most effective solution was ... to run under 64-bi...
Make HTML5 video poster be same size as video itself
...or preloading but without requiring a separate transparent image. We use a base64 encoded 1px transparent image instead.
<style type="text/css" >
video{
background: transparent url("poster.jpg") 50% 50% / cover no-repeat ;
}
</style>
<video controls poster="data:image...
How to convert SSH keypairs generated using PuTTYgen (Windows) into key-pairs used by ssh-agent and
...PuTTY formated key file you can use puttygen on *nix systems. For most apt-based systems puttygen is part of the putty-tools package.
Outputting a private key from a PuTTY formated keyfile:
$ puttygen keyfile.pem -O private-openssh -o avdev.pvk
For the public key:
$ puttygen keyfile.pem -L
...
Windows can't find the file on subprocess.call()
...g. dir or copy). You do not need shell=True to run a batch file or console-based executable.
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XmlSerializer: remove unnecessary xsi and xsd namespaces
...
64
Since Dave asked for me to repeat my answer to Omitting all xsi and xsd namespaces when seriali...
How to check whether an object is a date?
...do things */ }
alert( myDate.typof() ); //=> String
[Edit march 2013] based on progressing insight this is a better method:
Object.prototype.is = function() {
var test = arguments.length ? [].slice.call(arguments) : null
,self = this.constructor;
return test ? !!(tes...
Fastest hash for non-cryptographic uses?
I'm essentially preparing phrases to be put into the database, they may be malformed so I want to store a short hash of them instead (I will be simply comparing if they exist or not, so hash is ideal).
...