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Code examples for string concatination

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flaviut 2014-04-08 17:51:21 -04:00
commit 6e70d8afb4
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lib/system.nim
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@ -842,13 +842,28 @@ proc newStringOfCap*(cap: int): string {.
proc `&` * (x: string, y: char): string {. proc `&` * (x: string, y: char): string {.
magic: "ConStrStr", noSideEffect, merge.} magic: "ConStrStr", noSideEffect, merge.}
## Concatinates `x` with `y`
##
## .. code-block:: Nimrod
## assert("ab" & 'c' == "abc")
proc `&` * (x: char, y: char): string {. proc `&` * (x: char, y: char): string {.
magic: "ConStrStr", noSideEffect, merge.} magic: "ConStrStr", noSideEffect, merge.}
## Concatinates `x` and `y` into a string
##
## .. code-block:: Nimrod
## assert('a' & 'b' == "ab")
proc `&` * (x, y: string): string {. proc `&` * (x, y: string): string {.
magic: "ConStrStr", noSideEffect, merge.} magic: "ConStrStr", noSideEffect, merge.}
## Concatinates `x` and `y`
##
## .. code-block:: Nimrod
## assert("ab" & "cd" == "abcd")
proc `&` * (x: char, y: string): string {. proc `&` * (x: char, y: string): string {.
magic: "ConStrStr", noSideEffect, merge.} magic: "ConStrStr", noSideEffect, merge.}
## is the `concatenation operator`. It concatenates `x` and `y`. ## Concatinates `x` with `y`
##
## .. code-block:: Nimrod
## assert('a' & "bc" == "abc")
# implementation note: These must all have the same magic value "ConStrStr" so # implementation note: These must all have the same magic value "ConStrStr" so
# that the merge optimization works properly. # that the merge optimization works properly.