murex rocks

Welcome

About

Install

Change Log

Blog

Technical Docs

Language Tour

Interactive Shell

Rosetta Stone

User Guide

Open Source

Discuss

Contribute

Source Code

Search Site

Left Sub-String: 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

• Add Prefix: prefix: Prefix a string to every item in a list
• Add Suffix: suffix: Prefix a string to every item in a list
• Count: count: Count items in a map, list or array
• Create JSON Array: ja: A sophisticated yet simply way to build a JSON array
• Create Streamable Array: a: A sophisticated yet simple way to stream an array or list (mkarray)
• Right Sub-String: right: Right substring every item in a list
• Shell Runtime: runtime: Returns runtime information on the internal state of Murex
• 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

---

This document was generated from builtins/core/lists/push_pop_doc.yaml.