大约有 44,900 项符合查询结果（耗时：0.0704秒） [XML]
When to use nested classes and classes nested in modules?
...
|
edited May 2 '18 at 19:45
Soviut
75.7k4040 gold badges160160 silver badges224224 bronze badges
...
Float vs Decimal in ActiveRecord
...Float. It's like a scientific notation for binary (something like +1.43*10^2). Because of that, it is impossible to store fractions and decimals in Float exactly.
That's why there is a Decimal format. If you do this:
irb:001:0> "%.47f" % (1.0/10)
=> "0.10000000000000000555111512312578270211...
regex.test V.S. string.match to know if a string matches a regular expression
...
Michał Perłakowski
63.1k2121 gold badges133133 silver badges148148 bronze badges
answered Jun 7 '12 at 21:26
gdoron is suppor...
Generating all permutations of a given string
...
52 Answers
52
Active
...
Where is Vagrant saving changes to the VM?
...
2 Answers
2
Active
...
How to select the first element in the dropdown using jquery?
... |
edited Nov 1 '18 at 20:08
Zander
861414 bronze badges
answered Sep 8 '09 at 15:11
...
How to initialize const member variable in a class?
...
126
The const variable specifies whether a variable is modifiable or not. The constant value assign...
Why are iframes considered dangerous and a security risk?
...
answered Sep 2 '11 at 21:01
Diodeus - James MacFarlaneDiodeus - James MacFarlane
105k2929 gold badges144144 silver badges171171 bronze badges
...
Getting the index of the returned max or min item using max()/min() on a list
...
23 Answers
23
Active
...
MySQL load NULL values from CSV data
...
|
edited Apr 27 at 15:29
Jacob
2,20311 gold badge99 silver badges1616 bronze badges
answere...