大约有 48,000 项符合查询结果（耗时：0.0608秒） [XML]
PHP Regex to check date is in YYYY-MM-DD format
...
answered Nov 2 '12 at 11:33
Avin VargheseAvin Varghese
3,87611 gold badge1616 silver badges3131 bronze badges
...
What does it mean by select 1 from table?
...
answered Aug 24 '11 at 5:57
cwallenpoolecwallenpoole
69.2k2121 gold badges113113 silver badges155155 bronze badges
...
do..end vs curly braces for blocks in Ruby
...
|
edited Apr 7 '11 at 20:57
answered Apr 7 '11 at 20:43
...
How to pick a new color for each plotted line within a figure in matplotlib?
...
answered Feb 11 '11 at 16:21
tom10tom10
56.6k77 gold badges111111 silver badges122122 bronze badges
...
Checking if all elements in a list are unique
...
answered Mar 11 '11 at 20:47
yanyan
19.1k33 gold badges3232 silver badges4747 bronze badges
...
Rails :include vs. :joins
...anLong
– rubyprince
May 12 '17 at 7:11
add a comment
|
...
How to implement a queue with three stacks?
...
|
edited Apr 10 '11 at 17:17
community wiki
...
Convert data.frame column to a vector?
...
11 Answers
11
Active
...
Regular expression to match numbers with or without commas and decimals in text
...t start with "."
#Either 0 or 2 decimal digits
#Pass: ($1000), (1.00), ($0.11)
#Fail: ($1.0), (1.), ($1.000), ($.11)
^\$?\d+(\.\d{2})?$
#### COMMA-GROUPED ####
#Commas required between powers of 1,000
#Can't start with "."
#Pass: (1,000,000), (0.001)
#Fail: (1000000), (1,00,00,00), (.001)
^\d{1,3}(...