大约有 43,200 项符合查询结果（耗时：0.0494秒） [XML]
Remove all special characters from a string [duplicate]
...le hyphens from being next to each other? and have them replaced with just 1?
function clean($string) {
$string = str_replace(' ', '-', $string); // Replaces all spaces with hyphens.
$string = preg_replace('/[^A-Za-z0-9\-]/', '', $string); // Removes special chars.
return preg_replace('/...
How to backup a local Git repository?
...thub.
#!/usr/bin/env ruby
#
# For documentation please sea man git-backup(1)
#
# TODO:
# - make it a class rather than a function
# - check the standard format of git warnings to be conform
# - do better checking for git repo than calling git status
# - if multiple entries found in config file, spe...
Concatenate two slices in Go
I'm trying to combine the slice [1, 2] and the slice [3, 4] . How can I do this in Go?
7 Answers
...
Show current state of Jenkins build on GitHub repo
...
12 Answers
12
Active
...
R programming: How do I get Euler's number?
...
150
The R expression
exp(1)
represents e, and
exp(2)
represents e^2.
This works because exp...
Paperclip::Errors::MissingRequiredValidatorError with Rails 4
...line to your Post model, after specifying has_attached_file :image
Option 1: Validate content type
validates_attachment_content_type :image, :content_type => ["image/jpg", "image/jpeg", "image/png", "image/gif"]
-OR- another way
validates_attachment :image, content_type: { content_type: ["im...
SQL Query to concatenate column values from multiple rows in Oracle
...
10 Answers
10
Active
...
Is it fine to have foreign key as primary key?
...
134
Foreign keys are almost always "Allow Duplicates," which would make them unsuitable as Primary...
what is faster: in_array or isset? [closed]
...
119
The answers so far are spot-on. Using isset in this case is faster because
It uses an O(1) h...