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pegs/re =~ warns about scope rule change; improved docs

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Araq 2013-05-08 15:49:04 +02:00
commit 44c4b945eb
4 changed files with 19 additions and 9 deletions
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13
doc/tut1.txt
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@ -735,12 +735,10 @@ However, this cannot be done for mutually recursive procedures:
proc even(n: int): bool
proc odd(n: int): bool =
if n == 1: return true
else: return even(n-1)
n == 1 or even(n-1)
proc even(n: int): bool =
if n == 0: return true
else: return odd(n-1)
n == 0 or odd(n-1)
Here ``odd`` depends on ``even`` and vice versa. Thus ``even`` needs to be
introduced to the compiler before it is completely defined. The syntax for
@ -750,6 +748,9 @@ procedure's body.
Later versions of the language may get rid of the need for forward
declarations.
The example also shows that a proc's body can consist of a single expression
whose value is then returned implicitly.
Iterators
=========
@ -848,7 +849,7 @@ procedure; the length never counts the terminating zero. Accessing the
terminating zero is no error and often leads to simpler code:
.. code-block:: nimrod
if s[i] == 'a' and s[i+1] == 'b' and s[i+2] == '\0':
if s[i] == 'a' and s[i+1] == 'b':
# no need to check whether ``i < len(s)``!
...
@ -1168,7 +1169,7 @@ subdivided in height levels accessed through their integer index:
echo len(tower) # --> 10
echo len(tower[1]) # --> 4
echo repr(tower) # --> [[slowBlink, mediumBlink, ...more output..
# The following lines don't compile due to type mistmatch errors
# The following lines don't compile due to type mismatch errors
#tower[north][east] = on
#tower[0][1] = on