大约有 40,000 项符合查询结果（耗时：0.0480秒） [XML]
Grep and Sed Equivalent for XML Command Line Processing
... often, so I'd really like a way to script access to that XML data via the command line. What are the best tools?
14 Answer...
MongoDB atomic “findOrCreate”: findOne, insert if nonexistent, but do not update
... specify updates which should only happen when inserting documents.
This, combined with the upsert option, means you can use findAndModify to achieve an atomic findOrCreate-like operation.
db.collection.findAndModify({
query: { _id: "some potentially existing id" },
update: {
$setOnInsert:...
Swift equivalent for MIN and MAX macros
...
min and max are already defined in Swift:
func max<T : Comparable>(x: T, y: T, rest: T...) -> T
func min<T : Comparable>(x: T, y: T, rest: T...) -> T
See this great writeup on documented & undocumented built-in functions in Swift.
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How do you push a Git tag to a branch using a refspec?
...erhaps you saw the following error message:
error: Trying to write non-commit object to branch refs/heads/master
Annotated tags have their own distinct type of object that points to the tagged commit object. Branches can not usefully point to tag objects, only commit objects. You need to “p...
Controller not a function, got undefined, while defining controllers globally
...unction ContactController($scope) {
$scope.contacts = ["abcd@gmail.com", "abcd@yahoo.co.in"];
$scope.add = function() {
$scope.contacts.push($scope.newcontact);
$scope.newcontact = "";
};
}]);
or
function ContactController($scope) {
$scope...
Format a date using the new date time API
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36
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How do I find which program is using port 80 in Windows? [duplicate]
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Start menu → Accessories → right click on "Command prompt". In the menu, click "Run as Administrator" (on Windows XP you can just run it as usual), run netstat -anb, and then look through output for your program.
BTW, Skype by default tries to use ports 80 and 443 f...
Best Way to read rss feed in .net Using C#
...eModel in references
Using SyndicationFeed:
string url = "http://fooblog.com/feed";
XmlReader reader = XmlReader.Create(url);
SyndicationFeed feed = SyndicationFeed.Load(reader);
reader.Close();
foreach (SyndicationItem item in feed.Items)
{
String subject = item.Title.Text;
String sum...
How to determine device screen size category (small, normal, large, xlarge) using code?
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151
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Maximum length for MySQL type text
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See for maximum numbers:
http://dev.mysql.com/doc/refman/5.0/en/storage-requirements.html
TINYBLOB, TINYTEXT L + 1 bytes, where L < 2^8 (255 Bytes)
BLOB, TEXT L + 2 bytes, where L < 2^16 (64 Kilobytes)
MEDIUMBLOB, MEDIUMTEXT L + 3 by...