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How can I calculate the difference between two dates?

... Not all days have 86400 seconds. For a trivial example that's fine but it's not a good idea in the real world. DST changes, leap seconds, etc can all mess with it. NSCalendar can tell you how many seconds are in a given day. ...
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DateTime.ToString() format that can be used in a filename or extension?

...our file name. Here i have provided example string fileName = "fileName_" + DateTime.Now.ToString("MM-dd-yyyy_hh-mm-ss-tt") + ".pdf"; OR If you don't prefer to use symbols you can try this also., string fileName = "fileName_" + DateTime.Now.ToString("MMddyyyyhhmmsstt") + ".pdf"; Hope this ...
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How to convert a string of numbers to an array of numbers?

...tion yourself like: Array.prototype.map = Array.prototype.map || function(_x) { for(var o=[], i=0; i<this.length; i++) { o[i] = _x(this[i]); } return o; }; share | improve...
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How does the bitwise complement operator (~ tilde) work?

...ng the binary representation of a number, taking its complement (inverting all the bits) and adding one. Two starts as 0000 0010, and by inverting the bits we get 1111 1101. Adding one gets us the result above. The first bit is the sign bit, implying a negative. So let's take a look at how we get ~2...
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Git status ignore line endings / identical files / windows & linux environment / dropbox / mled

.... Try using bitbucket (it have free private repositories), just make one small repo and test on your 2 machines with some small text files. – Saša Šijak Dec 13 '13 at 9:11 1 ...
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Android Fatal signal 11 (SIGSEGV) at 0x636f7d89 (code=1). How can it be tracked down?

...e NDK documents. Ever since the release NDK-r6, it has provided a utility called ndk-stack. Following is the content from official NDK documents with the NDK-r9 tar ball. Overview: ndk-stack is a simple tool that allows you to filter stack traces as they appear in the output of 'adb logcat' and r...
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How to configure PostgreSQL to accept all incoming connections

I've got a PostgreSQL data base that I'd like to configure to accept all incoming connections regardless of the source IP address. How can this be configured in the pg_hba.conf file? I'm using postgreSQL version 8.4. ...
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How do I remove the last comma from a string using PHP?

...This doesn't work in a loop that adds a comma at the end as it will remove all the commas. – LizardKG Mar 11 at 21:35 add a comment  |  ...
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The point of test %eax %eax [duplicate]

...the arguments to CMP are equal. So, TEST %eax, %eax JE 400e77 <phase_1+0x23> jumps if the %eax is zero. share | improve this answer | follow | ...
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Where are shared preferences stored?

...ces are stored in an xml file in the app data folder, i.e. /data/data/YOUR_PACKAGE_NAME/shared_prefs/YOUR_PREFS_NAME.xml or the default preferences at: /data/data/YOUR_PACKAGE_NAME/shared_prefs/YOUR_PACKAGE_NAME_preferences.xml SharedPreferences added during runtime are not stored in the Eclip...