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Why do this() and super() have to be the first statement in a constructor?
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Tactics for using PHP in a high-load site
...ur app. Replicating to additional servers typically works well if you have more reads than writes. Sharding is a technique to split your data over many machines.
Caching
You probably don't want to cache in your database. The database is typically your bottleneck, so adding more IO's to it is typ...
How do you debug a regex? [closed]
...uy RegexBuddy and use its built in debug feature. If you work with regexes more than twice a year, you will make this money back in time saved in no time. RegexBuddy will also help you to create simple and complex regular expressions, and even generate the code for you in a variety of languages.
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How to get a list of installed android applications and pick one to run
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How to take screenshot with Selenium WebDriver
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How to execute IN() SQL queries with Spring's JDBCTemplate effectivly?
I was wondering if there is a more elegant way to do IN() queries with Spring's JDBCTemplate. Currently I do something like that:
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Merging 2 branches together in GIT
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merge is used to bring two (or more) branches together.
a little example:
# on branch A:
# create new branch B
$ git checkout -b B
# hack hack
$ git commit -am "commit on branch B"
# create new branch C from A
$ git checkout -b C A
# hack hack
$ git com...
Force R not to use exponential notation (e.g. e+10)?
...ntific
notation: fixed notation will be preferred unless it is more
than ‘scipen’ digits wider.
Example:
R> ran2 <- c(1.810032e+09, 4)
R> options("scipen"=-100, "digits"=4)
R> ran2
[1] 1.81e+09 4.00e+00
R> options("scipen"=100, "digits"=4)
R> ran2
[1...
Is DateTime.Now the best way to measure a function's performance?
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Why is sizeof considered an operator?
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I believe things are more complex nowadays due to variable-length arrays (VLA). IIRC, the standard would even allow sizeof to have side effects if there is a VLA in the expression.
– Aaron McDaid
Jan 27 '15 ...