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In R, tabular data is stored in data frames. This topic covers the various ways of transforming a single table. Helpful packages Reshaping, stacking and splitting with data.table Reshape using tidyr splitstackshape

In Powershell, to avoid storing the password in clear text we use different methods of encryption and store it as secure string. When you are not specifying a key or securekey, this will only work for the same user on the same computer will be able to decrypt the encrypted string if you’re not using...

In all cases when extending types and modules, the extending code must be added/loaded before the code that is to call it. It must also be made available to the calling code by opening/importing the relevant namespaces.

Header: YAML format, used when the script is compile to define general parameter and metadata Parameterdefinitiontitlethe title of the documentauthorThe author of the documentdateThe date of the document: Can be "r format(Sys.time(), '%d %B, %Y')"authorThe author of the docu...

ParameterDetails/versionThe version to retrieve. View remarks./allForces all files to be retrieved, not just those that are out-of-date./overwriteOverwrites writable files that are not checked out/forceCombines /all and /overwrite/previewDisplays what would occur, without actually performing the Ge...

Try-except: try [statements] except [[[on E:ExceptionType do statement]] [else statement] | [statements] end; Try-finally: try [statements] finally [statements] end;

var foo [= value [, foo2 [, foo3 ... [, fooN]]]]; let bar [= value [, bar2 [, foo3 ... [, barN]]]]; const baz = value [, baz2 = value2 [, ... [, bazN = valueN]]]; See also: Reserved Keywords Scope

Sed commands can be specified to act only on certain lines by using addresses or address ranges.

Configuration happens in one of 3 ways: command line options the my.cnf configuration file setting variables from within the server Command Line options takes the form mysqld --long-parameter-name=value --another-parameter. The same parameters can be placed in the my.conf configuration fil...

public class MyClass implements Comparable<MyClass> public class MyComparator implements Comparator<SomeOtherClass> public int compareTo(MyClass other) public int compare(SomeOtherClass o1, SomeOtherClass o2) When implementing a compareTo(..) method which depends upon a doub...

It is possible to put a Python package in a ZIP file, and use it that way if you add these lines to the beginning of your script: import sys sys.path.append("package.zip")

As val are semantically static, they are initialized "in-place" wherever they appear in the code. This can produce surprising and undesirable behavior when used in abstract classes and traits. For example, let's say we would like to make a trait called PlusOne that defines an increment ...