大约有 23,000 项符合查询结果（耗时：0.0371秒） [XML]
Fragment MyFragment not attached to Activity
...d onPostExecute(Void result){
if(isAdded()){
getResources().getString(R.string.app_name);
}
}
To avoid onPostExecute from being called when the Fragment is not attached to the Activity is to cancel the AsyncTask when pausing or stopping the Fragment. Then isAdded() would not be nec...
How do I get hour and minutes from NSDate?
...
Use an NSDateFormatter to convert string1 into an NSDate, then get the required NSDateComponents:
Obj-C:
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"<your date format goes here"];
NSDate *date = [dateFo...
Checkbox for nullable boolean
...ble fashion (display: inline-block; width:100px;)
In the model (I'm using string, string for the dictionary definition as a pedagogical example. You can use bool?, string)
public IEnumerable<SelectListItem> Sexsli { get; set; }
SexDict = new Dictionary<string, string>()
...
Get list of JSON objects with Spring RestTemplate
...JsonIgnoreProperties(ignoreUnknown = true)
public class Rate {
private String name;
private String code;
private Double rate;
// add getters and setters
}
Then you can consume the service and get a strongly typed list via:
ResponseEntity<List<Rate>> rateResponse =
...
What does the @ symbol before a variable name mean in C#? [duplicate]
I understand that the @ symbol can be used before a string literal to change how the compiler parses the string. But what does it mean when a variable name is prefixed with the @ symbol?
...
What is SuppressWarnings (“unchecked”) in Java?
... onto the class itself or onto a long method). An example:
public List<String> getALegacyListReversed() {
@SuppressWarnings("unchecked") List<String> list =
(List<String>)legacyLibrary.getStringList();
Collections.reverse(list);
return list;
}
...
foreach with index [duplicate]
... 0;
foreach (var e in ie) action(e, i++);
}
And use it like so:
var strings = new List<string>();
strings.Each((str, n) =>
{
// hooray
});
Or to allow for break-like behaviour:
public static bool Each<T>(this IEnumerable<T> ie, Func<T, int, bool> action)
{
...
Immutable vs Mutable types
...o
x = 5.0
x += 7.0
print x # 12.0
Doesn't that "mut" x?
Well you agree strings are immutable right? But you can do the same thing.
s = 'foo'
s += 'bar'
print s # foobar
The value of the variable changes, but it changes by changing what the variable refers to. A mutable type can change that wa...
How to execute a JavaScript function when I have its name as a string
I have the name of a function in JavaScript as a string. How do I convert that into a function pointer so I can call it later?
...
How to trim a file extension from a String in JavaScript?
...lutions are better/more robust.
x = x.replace(/\..+$/, '');
OR
x = x.substring(0, x.lastIndexOf('.'));
OR
x = x.replace(/(.*)\.(.*?)$/, "$1");
OR (with the assumption filename only has one dot)
parts = x.match(/[^\.]+/);
x = parts[0];
OR (also with only one dot)
parts = x.split(".");
x = ...