Modern OrderedMap TryGet

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OrderedMap.TryGet

Copies the value for a key into a variable; returns false, adding nothing, if absent.

Syntax

TryGet( k, byref outv ) as boolean

Examples

#import "std/containers"
using containers

dim ages as OrderedMap( of ustring, integer )
ages.Put( "ada", 36 )

dim as integer got
if ages.TryGet( "ada", got ) then print got     '' 36

'' Reading through m[ k ] INSERTS a default value when k is absent;
'' TryGet does not. This is exactly containers.Map's rule.
got = -1
print ages.TryGet( "nobody", got )    '' false
print got                              '' -1, untouched
print ages.Count                       '' 1

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Library: OrderedMap and OrderedSet
Category: OrderedMap
Documented under: Members