大约有 30,000 项符合查询结果（耗时：0.0509秒） [XML]
Create unique constraint with null colu<em>mem>ns
...ial indexes:
CREATE UNIQUE INDEX favo_3col_uni_idx ON favorites (user_id, <em>mem>enu_id, recipe_id)
WHERE <em>mem>enu_id IS NOT NULL;
CREATE UNIQUE INDEX favo_2col_uni_idx ON favorites (user_id, recipe_id)
WHERE <em>mem>enu_id IS NULL;
This way, there can only be one co<em>mem>bination of (user_id, recipe_id) where <em>mem>enu_i...
What is the difference between Ruby 1.8 and Ruby 1.9
I'<em>mem> not clear on the differences between the "current" version of Ruby (1.8) and the "new" version (1.9). Is there an "easy" or a "si<em>mem>ple" explanation of the differences and why it is so different?
...
Chro<em>mem>e Extension how to send data fro<em>mem> content script to popup.ht<em>mem>l
I know this this has been asked in nu<em>mem>erous posts but honestly I don't get the<em>mem>. I a<em>mem> new to JavaScript, Chro<em>mem>e Extensions and everything and I have this class assign<em>mem>ent.
So I need to <em>mem>ake a plugin that would count DO<em>Mem> objects on any given page using Cross Do<em>mem>ain Requests.
I've been able to achiev...
How to use Swift @autoclosure
...
Consider a function that takes one argu<em>mem>ent, a si<em>mem>ple closure that takes no argu<em>mem>ent:
func f(pred: () -&a<em>mem>p;gt; Bool) {
if pred() {
print("It's true")
}
}
To call this function, we have to pass in a closure
f(pred: {2 &a<em>mem>p;gt; 1})
// "It's true"
If w...
What is the difference between 'classic' and 'integrated' pipeline <em>mem>ode in IIS7?
I was deploying an ASP.NET <em>Mem>VC application last night, and found out that it is less work to deploy with IIS7 set to integrated <em>mem>ode. <em>Mem>y question is what is the difference? And what are the i<em>mem>plications of using one or the other?
...
What exactly is Hot <em>Mem>odule Replace<em>mem>ent in Webpack?
I've read a few pages about Hot <em>Mem>odule Replace<em>mem>ent in Webpack.
There's even a sa<em>mem>ple app that uses it .
2 Answers
...
How to build an android library with Android Studio and gradle?
I a<em>mem> trying to <em>mem>igrate a project fro<em>mem> Eclipse but nothing I have tried is working. In Eclipse I have 3 projects (2 android app projects and 1 android library project). The 2 app projects depend on the library project. When I do the gradle export I get 3 projects that don't work. I a<em>mem> open to restruc...
“Add uni<em>mem>ple<em>mem>ented <em>mem>ethods” feature in the Android Studio
In the Eclipse IDE there is a great feature allows you to add (i<em>mem>ple<em>mem>ent) all of the required <em>mem>ethods of the particular class. I'<em>mem> looking for this feature in the Android Studio IDE, but without success so far. Is there so<em>mem>ething si<em>mem>ilar? For <em>mem>e it is one of the key-features and can't live without.
...
<em>Mem>ySQL: @variable vs. variable. What's the difference?
In another question I posted so<em>mem>eone told <em>mem>e that there is a difference between:
4 Answers
...
Enable access control on si<em>mem>ple HTTP server
I have the following shell script for a very si<em>mem>ple HTTP server:
4 Answers
4
...