大约有 43,000 项符合查询结果（耗时：0.0808秒） [XML]
How to convert int to NSString?
...s with @() expression. So the shortest way is to transform int to NSNumber and pick up string representation with stringValue method:
NSString *strValue = [@(myInt) stringValue];
or
NSString *strValue = @(myInt).stringValue;
...
How to detect UI thread on Android?
Is there a robust way to detect if Thread.currentThread() is the Android system UI thread in an application?
I would like to put some asserts in my model code that asserts that only one thread ( eg the ui thread) accesses my state, to assure that no kind of synchronization is necessary.
...
How to get a vertical geom_vline to an x-axis of class date?
Even though I found Hadley's post in the google group on POSIXct and geom_vline , I could not get it done. I have a time series from and would like to draw a vertical line for years 1998, 2005 and 2010 for example. I tried with ggplot and qplot syntax, but still I either see no vertical line ...
Does a foreign key automatically create an index?
...se through a FK-relationship, you'll often need to lookup a relating table and extract certain rows based on a single value or a range of values.
So it makes good sense to index any columns involved in a FK, but a FK per se is not an index.
Check out Kimberly Tripp's excellent article "When did SQ...
Android OnClickListener - identify a button
...b1);
b2 = (Button) findViewById(R.id.b2);
b1.setOnClickListener(myhandler1);
b2.setOnClickListener(myhandler2);
...
}
View.OnClickListener myhandler1 = new View.OnClickListener() {
public void onClick(View v) {
// it was the 1st button
}
};
View.OnClickListener ...
How can I make Flexbox children 100% height of their parent?
... Please add removing height: 100% to the answer - I nearly gave up and only saw this at the last moment before reverting to absolute - which comes with all sorts of problems.
– Peter
May 2 at 10:18
...
'id' is a bad variable name in Python
...emoved it. What a poorly named method! A generic, common name used in thousands of places (where context gives meaning). So someone decided to use it as a global name where there is no context?
– Basic
Jul 26 '16 at 14:27
...
UINavigationController “back button” custom text?
...
Just to clarify Tyler's comment because I did not understand this at first: Setting the backBarButtonItem in a view controllers navigationItem is setting the button that will show to get BACK to this view controller. Also note that although there is no button style for the arrow bu...
AppSettings get value from .config file
...embly reference to
System.Configuration
Go to your Solution Explorer and right click on References and select Add reference. Select the Assemblies tab and search for Configuration.
Here is an example of my App.config:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
...
How do I create an empty array/matrix in NumPy?
...t I would normally use a list. I want to create an empty array (or matrix) and then add one column (or row) to it at a time.
...