Tutorial by Topics: and

Y = fft(X) %computes the FFT of Vector or Matrix X using a default Transform Length of 256 (to be confirmed for version) Y = fft(X,n) %computes the FFT of X using n as Transform Length, n must be a 2-power based number. If the length of X is less than n, then Matlab will automatically pad X...

random(max) //Returns a (long) pseudo-random number between 0 (inclusive) and max (exclusive) random(min, max) //Returns a (long) pseudo-random number between min (inclusive) and max (exclusive) randomSeed(seed) //Initializes de pseudo-random number generator, causing it to start at a ...

This topic consists of a wide variety of useful tips and tricks discovered by SO users through their experience in coding. These are often examples of ways to circumvent common frustrations or ways of using Excel in a more "clever" way.

eval(expression[, globals=None[, locals=None]]) exec(object) exec(object, globals) exec(object, globals, locals) ArgumentDetailsexpressionThe expression code as a string, or a code objectobjectThe statement code as a string, or a code objectglobalsThe dictionary to use for global variable...

Backing up the filesystem instead of using pg_dumpall and pg_dump It's very important that if you use this, you call the pg_start_backup() function before and pg_stop_backup() function after. Doing filesystem backups is not safe otherwise; even a ZFS or FreeBSD snapshot of the filesystem backed u...

javap [options] <classes> NameDescription<classes>List of classes to disassemble. Can be in either package1.package2.Classname format, or package1/package2/Classname format. Do not include the .class extension.-help, --help, -?Print this usage message-versionVersion information-v...

private void EventName (object sender, EventArgs e); ParameterDetailsobject sendersender refers to the object that invoked the event that fired the event handler. This is useful if you have many objects using the same event handler.EventArgs eEventArgs is something of a dummy base class. In ...

Error Log Locations /var/log/ Typically the system.log and exception.log file will exist in the /var/log/ folder. These contain most of the information you will need. You can check to see if these are enabled and what the names of the exception and system log are by going to System > Conf...

checked(a + b) // checked expression unchecked(a + b) // unchecked expression checked { c = a + b; c += 5; } // checked block unchecked { c = a + b; c += 5; } // unchecked block

System.IO.File.ReadAllLines(path As String) System.IO.File.ReadAllText(path As String) System.IO.File.WriteAllText(path As String, contents As String) System.IO.File.WriteAllLines(path As String, contents() As String)