大约有 30,000 项符合查询结果（耗时：0.0510秒） [XML]
MySQL select one column DISTINCT, with corresponding other columns
...STINCT results from the FirstName column, but I need the corresponding ID and LastName .
12 Answers
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How does Chrome's “Request Desktop Site” option work?
...t mobile sites will NOT switch back to desktop if loaded with a desktop UA string. So then Safari uses your original request? Nope. It seems to work even if you originally typed in the URL for the mobile site. I don't know how its implemented because the name of mobile versions is by no means standa...
Is there any way to close a StreamWriter without closing its BaseStream?
...am based on the stream you wrote in.
public System.IO.Stream CreateStream(string value)
{
var baseStream = new System.IO.MemoryStream();
var baseCopy = new System.IO.MemoryStream();
using (var writer = new System.IO.StreamWriter(baseStream, System.Text.Encoding.UTF8))
{
writ...
Update parent scope variable in AngularJS
...nd a good one IMHO.
If you need to change some primitive (ints, booleans, strings) in the parent scope, from the view, you need it to be an attribute of another object in that scope, so the assignment may read:
<a ng-click="viewData.myAttr = 4">Click me!</a>
and it will, in turn:
g...
MYSQL OR vs IN performance
...elieve people who give their "opinion", science is all about testing and evidence.
I ran a loop of 1000x the equivalent queries (for consistency, I used sql_no_cache):
IN: 2.34969592094s
OR: 5.83781504631s
Update:
(I don't have the source code for the original test, as it was 6 years ago, though...
How do I move a single folder from one Subversion repository to another repository?
...n SVN load checksum error.
So when you perform this operation, don’t do string substitutions with sed of only the path name.
Substitute “Node-path: old_path” with “Node-path: new_path”. See SVN book chapter 5 “repository administration” for more details.
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How do you copy a record in a SQL table but swap out the unique id of the new row?
...ce table and destination table are the same and the primary key is a uniqueidentifier (guid). When I try this:
11 Answers
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Change Active Menu Item on Page Scroll?
...ll position
var fromTop = $(this).scrollTop()+topMenuHeight;
// Get id of current scroll item
var cur = scrollItems.map(function(){
if ($(this).offset().top < fromTop)
return this;
});
// Get the id of the current element
cur = cur[cur.length-1];
var id = cur &am...
Java HashMap performance optimization / alternative
...better for my particular set of data". Like, suppose you were working with strings, and you took the length of the string for the hash value. (Not how Java's String.hashCode works, but I'm just making up a simple example.) If your strings have widely varying lengths, from 1 to 10,000, and are fairly...
Can I get a list of files marked --assume-unchanged?
...
PowerShell solution, using Select-String \ sls
git ls-files -v | sls -pattern ^h -casesensitive
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