murex rocks

Welcome

About

Install

Change Log

Blog

Technical Docs

Language Tour

Interactive Shell

Rosetta Stone

User Guide

Commands

Types

Open Source

GitHub repo

Search Site

murex Shell Docs

Command Reference: prepend

Add data to the start of an array

Description

prepend a data to the start of an array.

Usage

<stdin> -> prepend: value -> <stdout>

Examples

» a: [January..December] -> prepend: 'New Year'
New Year
January
February
March
April
May
June
July
August
September
October
November
December

Detail

prepend and append are data type aware:

» tout json [1,2,3] -> append 4 5 6 bob
Error in `append` (1,22): cannot convert 'bob' to a floating point number: strconv.ParseFloat: parsing "bob": invalid syntax

Synonyms

• prepend
• list.prepend

See Also

• [[ (element): Outputs an element from a nested structure
• [ (index): Outputs an element from an array, map or table
• a (mkarray): A sophisticated yet simple way to build an array or list
• addheading: Adds headings to a table
• append: Add data to the end of an array
• cast: Alters the data type of the previous function without altering it’s output
• count: Count items in a map, list or array
• ja (mkarray): A sophisticated yet simply way to build a JSON array
• match: Match an exact value in an array
• msort: Sorts an array - data type agnostic
• mtac: Reverse the order of an array
• regexp: Regexp tools for arrays / lists of strings