大约有 17,000 项符合查询结果（耗时：0.0291秒） [XML]
Maximum number of records in a MySQL database table
...tables or partitioning and put old data in old tables by year such as users_2011_jan, users_2011_feb or use numbers for the month. Then change your programming to work with this model. Maybe make a new table with less information to summarize the data in less columns and then only refer to the bigge...
What is the official “preferred” way to install pip and virtualenv systemwide?
...here/how do you install setuptools-0.8? Looks like you are just grabbing ez_setup.py for a "lightweight version" of getting pip. I'd do the same but fear that it will break in the near future and I'll get stuck here again (like I always do)
– Steven Lu
Jul 13 '...
Advantage of creating a generic repository vs. specific repository for each object?
...
public abstract class Repository<TEntity>
{
private DataContext _dataContext;
protected Repository(DataContext dataContext)
{
_dataContext = dataContext;
}
protected IQueryable<TEntity> Query
{
get { return _dataContext.GetTable<TEntity>()...
Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?
...
There is a helpful function for doing the first example I gave, numpy.ix_. You can do the same thing as my first example with x[numpy.ix_([0,2],[1,3])]. This can save you from having to enter in all of those extra brackets.
...
How to get NSDate day, month and year in integer format?
...nthYear
If you wanted to e.g. get only the the year you can write:
let (_, _, year) = date.dayMonthYear
share
|
improve this answer
|
follow
|
...
How to detect when a UIScrollView has finished scrolling
...nt:
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView {
_isScrolling = NO;
}
- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate {
if (!decelerate) {
_isScrolling = NO;
}
}
Now, if your scroll is due to a programmatic setC...
Typical .gitignore file for an Android app
...
You can mix Android.gitignore:
# built application files
*.apk
*.ap_
# files for the dex VM
*.dex
# Java class files
*.class
# generated files
bin/
gen/
# Local configuration file (sdk path, etc)
local.properties
with Eclipse.gitignore:
*.pydevproject
.project
.metadata
bin/**
tmp/**
...
Using the rJava package on Win7 64 bit with R
...l find the jvm.dll automatically, without manually setting the PATH or JAVA_HOME. However note that:
To use rJava in 32-bit R, you need Java for Windows x86
To use rJava in 64-bit R, you need Java for Windows x64
To build or check R packages with multi-arch (the default) you need to install both ...
How to structure a express.js application?
...js
|~models
| |-monkey.js
| |-zoo.js
|~views
| |~zoos
| |-new.jade
| |-_form.jade
|~test
| |~controllers
| |-zoo.js
| |~models
| |-zoo.js
|-index.js
I use Exports to return what's relevant. For instance, in the models I do:
module.exports = mongoose.model('PhoneNumber', PhoneNumberSchem...
Date vs DateTime
...portion of the value.
public static void Main()
{
System.DateTime _Now = DateAndTime.Now;
Console.WriteLine("The Date and Time is " + _Now);
//will return the date and time
Console.WriteLine("The Date Only is " + _Now.Date);
//will return only the date
Console.Write("Pre...