大约有 16,000 项符合查询结果（耗时：0.0278秒） [XML]
How to tell if a tag failed to load
... failure, // called on failure
result // used internally, shouldn't be passed
) {
var me = this;
if (times == -1 || times > 0) {
setTimeout(function () {
result = (test()) ? 1 : 0;
me.timer((resul...
What's the _ underscore representative of in Swift References?
... Note: This can be used only when a is the (external) argument label and (internal) variable name at the same time. It's equivalent - func foo(a a: String) won't accept the _.
Why is Apple using it?
You can see Apple is using it across the API. Apple's libraries are still written in Objective-C ...
How to do a batch insert in MySQL
I have 1-many number of records that need to be entered into a table. What is the best way to do this in a query? Should I just make a loop and insert one record per iteration? Or is there a better way?
...
How to programmatically show next view in ViewPager?
...
As blessenm answered viewpager.setCurrentItem(int index) is the way to go.
share
|
improve this answer
|
follow
|
...
Why am I getting a NoClassDefFoundError in Java?
....NoClassDefFoundError This exception indicates that the JVM looked in its internal class definition data structure for the definition of a class and did not find it. This is different than saying that it could not be loaded from the classpath. Usually this indicates that we previously attempted t...
When do I really need to use atomic instead of bool? [duplicate]
... can see old value even after another thread has changed it to new. Atomic introduces memory barrier, so it becomes impossible.
share
|
improve this answer
|
follow
...
Pandas get topmost n records within each group
...
1 2 3
1 2
2 6 4
5 3
3 7 1
4 8 1
dtype: int64
There's a slight weirdness that you get the original index in there as well, but this might be really useful depending on what your original index was.
If you're not interested in it, you can do .reset_index(level=1,...
Scaling Node.js
...l.com').len(6, 64).isEmail(); //Methods are chainable
check('abc').isInt(); //Throws 'Invalid integer'
check('abc', 'Please enter a number').isInt(); //Throws 'Please enter a number'
check('abcdefghijklmnopzrtsuvqxyz').is(/^[a-z]+$/);
//Sanitize / Filter
var...
Random row selection in Pandas dataframe
... Thanks @eumiro. I also worked out that df.ix[np.random.random_integers(0, len(df), 10)] would also work.
– John
Apr 10 '13 at 10:58
7
...
Difference between Select Unique and Select Distinct
...s, foreign keys etc.
For example:
Create Table Employee(
Emp_PKey Int Identity(1, 1) Constraint PK_Employee_Emp_PKey Primary Key,
Emp_SSN Numeric Not Null Unique,
Emp_FName varchar(16),
Emp_LName varchar(16)
)
i.e. Someone's Social Security Number would likely be a uni...