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- Sorting the memory area
- Existence of memory area
- Equivalence
MemFirst (Function) In french: MemPremier
 Warning
From version 20, this feature is kept for backward compatibility. We recommend that you use Associative arrays.
Positions on the first element of a memory area and returns the value of this first element.
ResPremier = MemFirst("MaZoneMémoire")
sChaîne is string = "A"
sChaîne = Complete(sChaîne, 10000, "B")
Trace(Length(sChaîne))
MemCreate("ZM")
MemAdd("ZM", "1", sChaîne)
sChaîne = MemFirst("ZM")
Trace(Length(sChaîne))
Syntax
<Result> = MemFirst(<Memory area>)
<Result>: Any type - If the memory area is not empty: return value of the first element, defined by functions MemAdd or MemModify.
- If the memory area is empty: an empty string ("").
<Memory area>: Character string Name of the memory area, defined by MemCreate. Remarks The sorts performed by MemSort are taken into account during the call to MemFirst. If no sort was requested, MemFirst returns the value of the first element added by MemAdd. Existence of memory area The existence of the memory area is not checked. If the specified memory area does not exist, a WLanguage error occurs when MemFirst is used. To check the existence of a memory area, use MemExist. The two following syntaxes are equivalent: Res = MemFirst(<Memory area>)
Res = MemRetrieve(<Memory area>, 1) Business / UI classification: Neutral code
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