On Friday, 27 March 2015 at 13:07:30 UTC, Panke wrote:
On Thursday, 26 March 2015 at 21:36:56 UTC, rumbu wrote:
On Thursday, 26 March 2015 at 19:45:19 UTC, Alex Parrill wrote:
On Thursday, 26 March 2015 at 19:32:53 UTC, Idan Arye wrote:
...snip...
So tl;dr; make the template constraints in ddoc less
prominent?
The "new library reference preview" under Resources seems to
already have this (example:
http://dlang.org/library/std/algorithm/searching/starts_with.html)
This will not solve the readability problem:
- what is a range?
- what is a needle?
- what is a predicate?
Phobos is reinventing the OOP encapsulation without providing
the minimal tools. IMHO, something similar to "interface" is
mandatory to define constraints for "range" and the
relationship between "needle" and "range".
Never heard that complain about python's protocols which have no
language support whatsoever.
I've never used Python, so take this as a live experiment:
I googled for "startswith python":
str.startswith(prefix[, start[, end]])
Return True if string starts with the prefix, otherwise return
False. prefix can also be a tuple of prefixes to look for. With
optional start, test string beginning at that position. With
optional end, stop comparing string at that position.
In 3 seconds, I understood the basic usage, without ANY knowledge
about Python. Even if I don't know Python, the brackets told me
that "start" and "end" are optional. str, prefix, start, end -
comprehensible simple words. The only thing remaining is the
"tuple" thing. But I can use this function without knowing what a
"tuple" is.
Looked also in the source code to find out that startsWith is
locale sensitive, something ignored in phobos.
https://hg.python.org/cpython/file/4ebe1ede981e/Objects/stringobject.c#l2903
Now compare with this:
uint startsWith(alias pred = "a == b", Range, Needles...)(Range
doesThisStart, Needles withOneOfThese) if (isInputRange!Range &&
Needles.length > 1 && is(typeof(.startsWith!pred(doesThisStart,
withOneOfThese[0])) : bool) &&
is(typeof(.startsWith!pred(doesThisStart, withOneOfThese[1..$]))
: uint));
bool startsWith(alias pred = "a == b", R1, R2)(R1 doesThisStart,
R2 withThis) if (isInputRange!R1 && isInputRange!R2 &&
is(typeof(binaryFun!pred(doesThisStart.front, withThis.front)) :
bool));
bool startsWith(alias pred = "a == b", R, E)(R doesThisStart, E
withThis) if (isInputRange!R &&
is(typeof(binaryFun!pred(doesThisStart.front, withThis)) : bool));
*Checks whether the given input range starts with (one of) the
given needle(s).*
I'm not a native English speaker, but a range can start with a
needle? Where is the haystack? :)
Anyway, in the Python built-in lib I didn't find any
levenshtheinDistance, boyermooreFinder or
schschchcscshshscscshshscscssscsshcswarzSort.
