大约有 12,000 项符合查询结果（耗时：0.0261秒） [XML]
Regular expression for exact match of a string
...ause many people serious problems. E.g., using your approach \bhttp://www.foo.com\b will match http://www.bar.com/?http://www.foo.com, which is most definitely not an exact match, as requested in the OP. This will cause serious problems for people working with URLs or passwords (which, again, is wh...
Is there a combination of “LIKE” and “IN” in SQL?
...is still slightly different:
Oracle:
WHERE CONTAINS(t.something, 'bla OR foo OR batz', 1) > 0
SQL Server:
WHERE CONTAINS(t.something, '"bla*" OR "foo*" OR "batz*"')
The column you are querying must be full-text indexed.
Reference:
Building Full-Text Search Applications with Oracle Text ...
How to check if a map contains a key in Go?
...
One line answer:
if val, ok := dict["foo"]; ok {
//do something here
}
Explanation:
if statements in Go can include both a condition and an initialization statement. The example above uses both:
initializes two variables - val will receive either the va...
What is the use case of noop [:] in bash?
...ts when I comment out all the code. For example you have a test:
if [ "$foo" != "1" ]
then
echo Success
fi
but you want to temporarily comment out everything contained within:
if [ "$foo" != "1" ]
then
#echo Success
fi
Which causes bash to give a syntax error:
line 4: syntax error ...
Can I extend a class using more than 1 class in PHP?
...user_func_array(array($extender, $name), $params);
}
}
}
}
$foo = new Extendable();
$foo->addExtender(new OtherClass());
$foo->other_class_method();
Note that in this model "OtherClass" gets to 'know' about $foo. OtherClass needs to have a public function called "setExtendee"...
What is the difference between `let` and `var` in swift?
...constant it's not much of one. This works just fine in the compiler: let foo = [1,2,3]; foo[2] = 5; println("(foo)") // [1, 2, 5]
– Kevin Frost
Jun 11 '14 at 20:47
...
Access parent URL from iframe
...ggestion. For those who are writing the parent html iframe code this would foot the bill. We used something very similar in our pixel software.
– Ligemer
Nov 25 '14 at 0:30
...
How to create a directory using Ansible
...ound that it changes child files permissions also... almost like mkdir -p /foo/bar && chmod -R 0775 /foo/bar.. has anyone else observed this with Ansible 2.0.0.2
– ThePracticalOne
May 11 '16 at 14:04
...
When is del useful in python?
...ly, using del on a local variable makes the intent clearer. Compare:
del foo
to
foo = None
I know in the case of del foo that the intent is to remove the variable from scope. It's not clear that foo = None is doing that. If somebody just assigned foo = None I might think it was dead code. But...
What does the `forall` keyword in Haskell/GHC do?
...
Let's start with a code example:
foob :: forall a b. (b -> b) -> b -> (a -> b) -> Maybe a -> b
foob postProcess onNothin onJust mval =
postProcess val
where
val :: b
val = maybe onNothin onJust mval
This code doesn...