大约有 42,000 项符合查询结果（耗时：0.0680秒） [XML]
Why is the tag deprecated in HTML?
I am just curious as to why the <center> tag in HTML was deprecated.
12 Answers
...
Rails: Missing host to link to! Please provide :host parameter or set default_url_options[:host]
...have been googling for about 90 minutes now and still don't have an answer to this. Where do I set default_url_options ? I've already set it for config.action_mailer.default_url_options to solve this same bug elsewhere, but now I'm getting this error when trying to use a URL helper inside an RS...
Initializing select with AngularJS and ng-repeat
I'm trying to get select-box to start off with a pre-filled option using ng-repeat with AngularJS 1.1.5. Instead the select always starts out with nothing selected. It also has an empty option, which I don't want. I think that there is a side effect of nothing being selected.
...
Git Extensions: Win32 error 487: Couldn't reserve space for cygwin's heap, Win32 error 0
...nt shared memory sections, which can on occasion become corrupted. The symptom of this is that some Cygwin programs begin to fail, but other applications are unaffected. Since these shared memory sections are persistent, often a system reboot is needed to clear them out before the problem can be res...
Primary key or Unique index?
...EX ux_table1_foo ON table1(foo); -- Create unique index on foo.
INSERT INTO table1 (foo, bar) VALUES (1, 2); -- OK
INSERT INTO table1 (foo, bar) VALUES (2, 2); -- OK
INSERT INTO table1 (foo, bar) VALUES (3, 1); -- OK
INSERT INTO table1 (foo, bar) VALUES (1, 4); -- Fails!
Duplicate entry '1' for k...
S3 - Access-Control-Allow-Origin Header
Did anyone manage to add Access-Control-Allow-Origin to the response headers?
What I need is something like this:
24 Ans...
Why is using the rails default_scope often recommend against?
...people mention that using the rails default_scope is a bad idea, and the top hits for default_scope on stackoverflow are about how to overwrite it. This feels messed up, and merits an explicit question (I think).
...
When is it better to use String.Format vs string concatenation?
I've got a small piece of code that is parsing an index value to determine a cell input into Excel. It's got me thinking...
...
Type definition in object literal in TypeScript
In TypeScript classes it's possible to declare types for properties, for example:
9 Answers
...
Visual Studio keyboard shortcut to automatically add the needed 'using' statement
What is the keyboard shortcut to expand the little red line that gives you the menu where you can choose to have the necessary using statement added to the top of the file?
...