大约有 11,400 项符合查询结果（耗时：0.0234秒） [XML]
Getting unique items from a list [duplicate]
...
Use a HashSet<T>. For example:
var items = "A B A D A C".Split(' ');
var unique_items = new HashSet<string>(items);
foreach (string s in unique_items)
Console.WriteLine(s);
prints
A
B
D
C
...
What is the maximum length of a table name in Oracle?
What are the maximum length of a table name and column name in Oracle?
12 Answers
12
...
Why can't R's ifelse statements return vectors?
I've found R's ifelse statements to be pretty handy from time to time. For example:
9 Answers
...
AngularJS ng-if with multiple conditions
I'd like to know if it's possible to have something like this:
5 Answers
5
...
Why is extending native objects a bad practice?
Every JS opinion leader says that extending the native objects is a bad practice. But why? Do we get a perfomance hit? Do they fear that somebody does it "the wrong way", and adds enumerable types to Object , practically destroying all loops on any object?
...
Get name of caller function in PHP?
...
See debug_backtrace - this can trace your call stack all the way to the top.
Here's how you'd get your caller:
$trace = debug_backtrace();
$caller = $trace[1];
echo "Called by {$caller['function']}";
if (isset($caller['class']))...
Detect enter press in JTextField
Is it possible to detect when someone presses Enter while typing in a JTextField in java? Without having to create a button and set it as the default.
...
Keep-alive header clarification
I was asked to build a site , and one of the co-developer told me That I would need to include the keep-alive header.
1 An...
Equivalent of “throw” in R
...
See help(tryCatch):
Conditions are signaled by
'signalCondition'. In addition, the
'stop' and 'warning' functions have
been modified to also accept
condition arguments.
and later under 'See Also':
'stop' and 'warning' signal conditions, and 'try' is esse...
string to string array conversion in java
...
I want to convert into a string array.
How do I do it?
Is there any java built in function? Manually I can do it but I'm searching for a java built in function.
...