大约有 30,000 项符合查询结果（耗时：0.0383秒） [XML]
Anonymous recursive PHP functions
...o pass it by reference. Be aware, that if you modify the $factorial before calling the function, the result will change as it's passed by reference.
– Marius Balčytis
Sep 13 '12 at 21:48
...
Is there a way to create your own html tag in HTML5?
...5? and the HTML5 spec).
Let's assume you want to use a custom tag element called <stack>. Here's what you should do...
STEP 1
Normalize its attributes in your CSS Stylesheet (think css reset) -
Example:
stack{display:block;margin:0;padding:0;border:0; ... }
STEP 2
To get it to work in...
string c_str() vs. data()
...I have seen in actual implementations, they either do the same or data() calls c_str() .
6 Answers
...
What are the options for storing hierarchical data in a relational database? [closed]
...mns when inserting new items. well I created a stored procedure for it and called it every time I inserted a new item which was rare in my case but it is really fast.
I got the idea from the Joe Celko's book, and the stored procedure and how I came up with it is explained here in DBA SE
https://dba....
Why can't I use the 'await' operator within the body of a lock statement?
...d so we don't allow it, so as to protect you from making this mistake.
call to Monitor.Exit within ExitDisposable.Dispose seems to block indefinitely (most of the time) causing deadlocks as other threads attempt to acquire the lock. I suspect the unreliability of my work around and the reason aw...
One Activity and all other Fragments [closed]
...or create, requires them to go to a new screen. With activities we'd just call the new screen with startActivityForResult but with Fragments there is no such thing so you end up storing the value on the Activity and having the main edit fragment check the Activity to see if data has been selected a...
Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '=
...e:
SET @rUsername = ‘aname’ COLLATE utf8_unicode_ci; -- COLLATE added
CALL updateProductUsers(@rUsername, @rProductID, @rPerm);
Option 2: add COLLATE to the WHERE clause:
CREATE PROCEDURE updateProductUsers(
IN rUsername VARCHAR(24),
IN rProductID INT UNSIGNED,
IN rPerm VARCHAR(1...
How to prevent ReflectionTypeLoadException when calling Assembly.GetTypes()
...om%2fquestions%2f7889228%2fhow-to-prevent-reflectiontypeloadexception-when-calling-assembly-gettypes%23new-answer', 'question_page');
}
);
Post as a guest
N...
std::shared_ptr of this
...le_shared_from_this just for this purpose. You inherit from it and you can call .shared_from_this() from inside the class. Also, you are creating circular dependencies here that can lead to resource leaks. That can be resolved with the use of std::weak_ptr. So your code might look like this (assumin...
Capture HTML Canvas as gif/jpg/png/pdf?
...cation = canvas.toDataURL("image/png");
}
</script>
Theoretically this should create and then navigate to an image with a green square in the middle of it, but I haven't tested.
share
|
...