大约有 44,000 项符合查询结果(耗时:0.0533秒) [XML]
Regex Pattern to Match, Excluding when… / Except between
...swers have some useful ideas but I want something more complete that I can 100% understand and reuse; that's why I set a bounty. Also ideas that work everywhere are better for me than not standard syntax like \K
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Multi-project test dependencies with gradle
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16 Answers
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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('/...
64-bit version of Boost for 64-bit windows
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answered Feb 24 '10 at 14:01
Adrian ConlonAdrian Conlon
3,92111 gold badge1919 silver badges1717 bronze badges
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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...
R programming: How do I get Euler's number?
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150
The R expression
exp(1)
represents e, and
exp(2)
represents e^2.
This works because exp...
Show current state of Jenkins build on GitHub repo
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12 Answers
12
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SQL Query to concatenate column values from multiple rows in Oracle
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10 Answers
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Is it fine to have foreign key as primary key?
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134
Foreign keys are almost always "Allow Duplicates," which would make them unsuitable as Primary...
what is faster: in_array or isset? [closed]
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119
The answers so far are spot-on. Using isset in this case is faster because
It uses an O(1) h...
