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Command Reference: left

Left substring every item in a list

Description

Takes a list from STDIN and returns a left substring of that same list.

One parameter is required and that is the number of characters to return. If the parameter is a negative then left counts from the right.

Usage

<stdin> -> left int -> <stdout>

Examples

Count from the left

» ja: [Monday..Wednesday] -> left 2
[
    "Mo",
    "Tu",
    "We"
]

Count from the right

» ja: [Monday..Wednesday] -> left -3
[
    "Mon",
    "Tues",
    "Wednes"
]

Detail

Supported data types can queried via runtime

runtime: --marshallers
runtime: --unmarshallers

Synonyms

• left
• list.left

See Also

• a (mkarray): A sophisticated yet simple way to build an array or list
• count: Count items in a map, list or array
• ja (mkarray): A sophisticated yet simply way to build a JSON array
• lang.MarshalData() (system API): Converts structured memory into a murex data-type (eg for stdio)
• lang.UnmarshalData() (system API): Converts a murex data-type into structured memory
• prefix: Prefix a string to every item in a list
• right: Right substring every item in a list
• runtime: Returns runtime information on the internal state of murex
• suffix: Prefix a string to every item in a list