diff options
| -rw-r--r-- | doc/manual.txt | 6 | ||||
| -rw-r--r-- | lib/posix/posix.nim | 12 | ||||
| -rw-r--r-- | lib/pure/collections/sequtils.nim | 39 |
3 files changed, 54 insertions, 3 deletions
diff --git a/doc/manual.txt b/doc/manual.txt index 2ccd4c1e9..b85c49e03 100644 --- a/doc/manual.txt +++ b/doc/manual.txt @@ -5172,9 +5172,9 @@ the same feature under the same name. Exportc pragma -------------- The `exportc`:idx: pragma provides a means to export a type, a variable, or a -procedure to C. The optional argument is a string containing the C identifier. -If the argument is missing, the C name is the Nimrod -identifier *exactly as spelled*: +procedure to C. Enums and constants can't be exported. The optional argument +is a string containing the C identifier. If the argument is missing, the C +name is the Nimrod identifier *exactly as spelled*: .. code-block:: Nimrod proc callme(formatstr: cstring) {.exportc: "callMe", varargs.} diff --git a/lib/posix/posix.nim b/lib/posix/posix.nim index c3d5b5939..41260b36f 100644 --- a/lib/posix/posix.nim +++ b/lib/posix/posix.nim @@ -2566,3 +2566,15 @@ proc poll*(a1: ptr TPollfd, a2: Tnfds, a3: int): cint {. proc realpath*(name, resolved: cstring): cstring {. importc: "realpath", header: "<stdlib.h>".} + +proc utimes*(path: cstring, times: ptr array [2, Ttimeval]): int {. + importc: "utimes", header: "<sys/time.h>".} + ## Sets file access and modification times. + ## + ## Pass the filename and an array of times to set the access and modification + ## times respectively. If you pass nil as the array both attributes will be + ## set to the current time. + ## + ## Returns zero on success. + ## + ## For more information read http://www.unix.com/man-page/posix/3/utimes/. diff --git a/lib/pure/collections/sequtils.nim b/lib/pure/collections/sequtils.nim index 3993f1ccc..b2f72ee14 100644 --- a/lib/pure/collections/sequtils.nim +++ b/lib/pure/collections/sequtils.nim @@ -276,6 +276,38 @@ template foldr*(sequence, operation: expr): expr = result = operation result +template mapIt*(seq1, typ, pred: expr): expr = + ## Convenience template around the ``map`` proc to reduce typing. + ## + ## The template injects the ``it`` variable which you can use directly in an + ## expression. You also need to pass as `typ` the type of the expression, + ## since the new returned sequence can have a different type than the + ## original. Example: + ## + ## .. code-block:: nimrod + ## let + ## nums = @[1, 2, 3, 4] + ## strings = nums.mapIt(string, $(4 * it)) + var result {.gensym.}: seq[typ] = @[] + for it {.inject.} in items(seq1): + result.add(pred) + result + +template mapIt*(varSeq, pred: expr) = + ## Convenience template around the mutable ``map`` proc to reduce typing. + ## + ## The template injects the ``it`` variable which you can use directly in an + ## expression. The expression has to return the same type as the sequence you + ## are mutating. Example: + ## + ## .. code-block:: nimrod + ## var nums = @[1, 2, 3, 4] + ## nums.mapIt(it * 3) + ## assert nums[0] + nums[3] == 15 + for i in 0 .. <len(varSeq): + let it {.inject.} = varSeq[i] + varSeq[i] = pred + when isMainModule: import strutils block: # concat test @@ -381,4 +413,11 @@ when isMainModule: Inserting [2,2,2,2,2,2] into [1,1,1,1,1,1,1,1] at 3 is [1,1,1,2,2,2,2,2,2,1,1,1,1,1]""" + block: # mapIt tests + var + nums = @[1, 2, 3, 4] + strings = nums.mapIt(string, $(4 * it)) + nums.mapIt(it * 3) + assert nums[0] + nums[3] == 15 + echo "Finished doc tests" |