大约有 45,000 项符合查询结果（耗时：0.0831秒） [XML]
How to create index on JSON field in Postgres?
...cts them as TEXT, though. If you want to do integer comparisons instead of string comparisons, you have to add a cast: ((info->>'name')::INT).
– jpmc26
Oct 6 '15 at 19:44
13
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How to get the name of a function in Go?
...lect"
"runtime"
)
func foo() {
}
func GetFunctionName(i interface{}) string {
return runtime.FuncForPC(reflect.ValueOf(i).Pointer()).Name()
}
func main() {
// This will print "name: main.foo"
fmt.Println("name:", GetFunctionName(foo))
}
...
How to move a model between two Django apps (Django 1.7)
...ion
Point all of the FK references to the new model. If you aren't using string references, move the old model to the bottom of models.py (DON'T remove it) so it doesn't compete with the imported class.
Run makemigrations but DON'T wrap anything in state_operations (the FK changes should actually ...
GUI not working after rewriting to MVC
...*/
public class MVCGame implements Runnable {
public static void main(String[] args) {
EventQueue.invokeLater(new MVCGame());
}
@Override
public void run() {
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.add(new MainPan...
Enabling ProGuard in Eclipse for Android
... {
public static **[] values();
public static ** valueOf(java.lang.String);
}
-keep class * implements android.os.Parcelable {
public static final android.os.Parcelable$Creator *;
}
-keepclassmembers class **.R$* {
public static <fields>;
}
I think I've answered all the questio...
Java “user.dir” property - what exactly does it mean?
...cally" because it can be changed, eg when you run an app with Runtime.exec(String[] cmdarray, String[] envp, File dir)
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Which HTTP methods match up to which CRUD methods?
...by web browsers, it's considered okay to "overload POST" by adding a query string argument like method=PUT or method=DELETE on the URI being POSTed.
– Jim Ferrans
Jun 2 '11 at 4:16
...
Is XML case-sensitive?
...tive enumerations:
XML Schema Case Insensitive Enumeration of Simple Type String
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GitHub: searching through older versions of files
...t have added the similar -G option, which takes a regex instead of a fixed string.
– Cascabel
Jan 16 '11 at 17:56
@Jef...
Is a Python list guaranteed to have its elements stay in the order they are inserted in?
...ng FIFO). Lists are practical representations of, well, lists of things. A string can be thought of as a list of characters, as the order is important ("abc" != "bca") and duplicates in the content of the string are certainly permitted ("aaa" can exist and != "a").
A set is a collection of elements...