...benchmark to see where your problem points will be. You can spend a lot of time guessing and improving, but you won't see real results until you measure and compare your changes. For example, for many years, the MySQL query cache was the solution to all of our performance problems. If your site wa...

I'm writing a CSV file. I need to write timestamps that are accurate at least to the second, and preferably to the millisecond. What's the best format for timestamps in a CSV file such that they can be parsed accurately and unambiguously by Excel with minimal user intervention? ...

... Sometimes we want to align just two columns. In that case, we don't need any plugins and can use pure Vim functionality like this: Choose a separator. In OP's post this is a comma, in my example this is =. Add spaces before/aft...

...ifferent language (Eg. French). Android will choose the right folder at runtime for you. The same resources framework lets you use alternate layouts for different hardware configurations, screen pixel densities, and input devices just by dropping them in named folder. Since Android 1.6, your app ...

...P to never use URLs with session identifiers. Regenerate the session ID anytime the session's status changes. That means any of the following: User authentication Storing sensitive info in the session Changing anything about the session etc... Session Hijacking This is where an attacker gets ...

.../' This runs Perl, the -n option instructs Perl to read in one line at a time from STDIN and execute the code. The -e option specifies the instruction to run. The instruction runs a regexp on the line read, and if it matches prints out the contents of the first set of bracks ($1). You can do thi...

...bble it, and whether or not that happens, match a character; *? match many times (non-greedily, as to not eat the closing quote); \1 match the same quote that was use for opening. share | improve t...

... java.util.Date dt = xmlGregorianCalendarInstance.toGregorianCalendar().getTime(); share | improve this answer | follow | ...

... which basically disables all efficiency in numpy. So repeat 3 times fast: object==bad, float==good Saying that, many operations may still work just as well with None vs NaN (but perhaps are not supported i.e. they may sometimes give surprising results): In [15]: s_bad.sum() Out[15...

... somtimes gc print the same number with pid number of a process when free memory. here is an another version adb logcat | grep `adb shell ps | grep org.videolan.vlc | awk '{print $2")"}'` – alijandro ...