PrependTo

Name	Mandatory	Description	Default	Type
⬅️ Input		The value to prepend to the collection.		Any
Output ➡️		The input to this shard is passed through as its output.		Any
Collection	No	The collection to add the input to.	none	Var([Any])Var(String)Var(Bytes)

Prepends the input to the context variable passed to Collection.

Details

PrependTo prepends (i.e., adds to the start) its input to the variable it receives in its :Collection parameter.

This shard works on string and sequence variables.

The input to this shard is also passed through as its output.

See also

• DropFront
• PopFront
• Push
• Set
• Update

Examples

Code

; prepend element to sequence
[1 2 3] >= seq
0 | PrependTo(seq)   ; prepends element to sequence
seq | Log            ; updated sequence => [0, 1, 2, 3]

; prepend character to string
"pen" >= str
"O" | PrependTo(str) ; prepends character to string
str | Log            ; updated string => Open

[info] [sample-wire] [0 1 2 3]
[info] [sample-wire] Open

 

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