大约有 39,000 项符合查询结果（耗时：0.0371秒） [XML]
Extract elements of list at odd positions
...
5 Answers
5
Active
...
How do I wrap link_to around some html ruby code?
...
5 Answers
5
Active
...
Why does Lua have no “continue” statement?
...
In Lua 5.2 the best workaround is to use goto:
-- prints odd numbers in [|1,10|]
for i=1,10 do
if i % 2 == 0 then goto continue end
print(i)
::continue::
end
This is supported in LuaJIT since version 2.0.1
...
Iterate a list with indexes in Python
...
356
>>> a = [3,4,5,6]
>>> for i, val in enumerate(a):
... print i, val
...
0 ...
Rails 4: before_filter vs. before_action
...
5 Answers
5
Active
...
Why does csvwriter.writerow() put a comma after each character?
...
151
It expects a sequence (eg: a list or tuple) of strings. You're giving it a single string. A str...
Run a callback only if an attribute has changed in Rails
...
Rails 5.1+
class Page < ActiveRecord::Base
before_save :do_something, if: :will_save_change_to_status_id?
private
def do_something
# ...
end
end
The commit that changed ActiveRecord::Dirty is here: https://githu...
Xcode 4 - “Archive” is greyed out?
...
Rafael Bugajewski
1,55833 gold badges2020 silver badges3636 bronze badges
answered Mar 11 '11 at 0:05
jasonjason
...
Responding with a JSON object in Node.js (converting object/array to JSON string)
... |
edited Dec 4 '17 at 6:25
answered Mar 21 '12 at 14:03
Ke...
relative path in require_once doesn't work
...|
edited Jan 14 '14 at 17:54
DarkSide
3,34711 gold badge2222 silver badges3131 bronze badges
answered Ma...