大约有 40,000 项符合查询结果（耗时：0.0531秒） [XML]
MySQL ON vs USING?
...(2,"Bejing",true);
insert into city (countryId,city,hasAirport) values (3,"New York",true);
insert into city (countryId,city,hasAirport) values (4,"Napoli",true);
insert into city (countryId,city,hasAirport) values (5,"Manchester",true);
insert into city (countryId,city,hasAirport) values (5,"Birmin...
Returning the product of a list
... 106 µs 95.3 µs 5.92 µs 26.1 µs
C 4.34 ms 3.51 ms 16.7 µs 38.9 µs
D 46.6 ms 38.5 ms 180 µs 216 µs
Result: np.prod is the fastest one, if you use np.array as data structure (18x for small array, 250x for large array)
with python 3.3.2...
Get Android .apk file VersionName or VersionCode WITHOUT installing apk
...oal as previously stated should be to find out if the apk on the server is newer than the one installed BEFORE attempting to download or install it. The easiest way to do this is include the version number in the filename of the apk hosted on the server eg myapp_1.01.apk
You will need to establish ...
Highlight a word with jQuery
...wordsOnly) {
pattern = "\\b" + pattern + "\\b";
}
var re = new RegExp(pattern, flag);
return this.each(function () {
jQuery.highlight(this, re, settings.element, settings.className);
});
};
...
How big can a MySQL database get before performance starts to degrade
...uantity of data that's repeatedly worked with. If you have "old data" and "new data" and 99% of your queries work with new data, just move all the old data to another table - and don't look at it ;)
-> Have a look at partitioning.
...
Git pre-push hooks
...e of the ref being updated, the old object name stored in the ref, and the new objectname to be stored in the ref."
– ordnungswidrig
Nov 17 '10 at 8:27
...
Do you use source control for your database items? [closed]
...o the database is made in two places, a dump file that is used to create a new database on a new customer site, and an update file that is run on every update which checks your current database version number against the highest number in the file, and updates your database in place. So for instanc...
Does using “new” on a struct allocate it on the heap or stack?
When you create an instance of a class with the new operator, memory gets allocated on the heap. When you create an instance of a struct with the new operator where does the memory get allocated, on the heap or on the stack ?
...
erb, haml or slim: which one do you suggest? And why? [closed]
... on both HTML and ruby logic, or your designer is ready to learn something new (like HAML) I'd go for HAML. It is a lot more ruby-friendly, reduces char count by much and a lot more readable than ERB.
For example (taken from official HAML site):
In ERB your view will look like this:
<div id="p...
How should I pass multiple parameters to an ASP.Net Web API GET?
... better way of doing multiple parameters with GETs. Posted this when I was newer to WebAPI, now I don't use AttributeRouting (unless I just don't want to create a new Controller), and pass all the Parameters in the QueryString, they map automatically. Updating when I get a chance so people don't use...