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How do I print the type of a variable in Rust?
...ile time, you can cause an error and get the compiler to pick it up.
For em>x m>ample, set the variable to a type which doesn't work:
let mut my_number: () = 32.90;
// let () = m>x m>; would work too
error[E0308]: mismatched types
--> src/main.rs:2:29
|
2 | let mut my_number: () = 32.90;
| ...
What are the best practices for JavaScript error handling?
... catch , finally , and throw , but I'm not finding a ton of advice from em>x m>perts on when and where to throw errors.
5 Answ...
How can I change the color of my prompt in zsh (different from normal tem>x m>t)?
...
Here's an em>x m>ample of how to set a red prompt:
PS1=$'\e[0;31m$ \e[0m'
The magic is the \e[0;31m (turn on red foreground) and \e[0m (turn off character attributes). These are called escape sequences. Different escape sequences give yo...
Difference between objectForKey and valueForKey?
...nary method. An NSDictionary is a collection class similar to an NSArray, em>x m>cept instead of using indem>x m>es, it uses keys to differentiate between items. A key is an arbitrary string you provide. No two objects can have the same key (just as no two objects in an NSArray can have the same indem>x m>).
val...
Fragment onCreateView and onActivityCreated called twice
...
I was scratching my head about this for a while too, and since Dave's em>x m>planation is a little hard to understand I'll post my (apparently working) code:
private class TabListener<T em>x m>tends Fragment> implements ActionBar.TabListener {
private Fragment mFragment;
private Activity mA...
Working with huge files in VIM
... up all my memory and then printed an error message :-(. I could not use hem>x m>edit for either, as it cannot insert anything, just overwrite. Here is an alternative approach:
You split the file, edit the parts and then recombine it. You still need twice the disk space though.
Grep for something surr...
How to get a list of file names in different lines
... with ls , so that each filename will be on a seperate line, without the em>x m>tra details supplied by ls -l . I looked at ls --help and didn't find a solution. I tried doing
...
Access-Control-Allow-Origin与跨域 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... header is present on the requested resource.问题在某域名下使用Ajam>x m>向另一个域名下...No 'Access-Control-Allow-Origin' header is present on the requested resource.
问题
在某域名下使用Ajam>x m>向另一个域名下的页面请求数据，会遇到跨域问题。另一个域名...
Access-Control-Allow-Origin与跨域 - 建站技术 - 清泛IT论坛，有思想、有深度
...der is present on the requested resource.
问题在某域名下使用Ajam>x m>向另一个域名下的页面请求数据，会遇到跨域问题。另一个域名必须在response中添加 Access-Control-Allow-Origin 的header，才能让前者成功拿到数据。这句话对吗？如果对，那么...
How do I iterate over an NSArray?
...dard idiom to iterate over an NSArray. My code needs to be suitable for OS m>X m> 10.4+.
8 Answers
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