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Using ping in c#
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There's no point in wrapping the Ping instance with a using if try/catch/finally is employed properly. It's one or the other not both. See stackoverflow.com/questions/278902/….
– JamieSee
Feb 1 '19...
Difference between matches() and find() in Java Regex
...compile("\\d\\d\\d");
Matcher m = p.matcher("a123b");
System.out.println(m.find());
System.out.println(m.matches());
p = Pattern.compile("^\\d\\d\\d$");
m = p.matcher("123");
System.out.println(m.find());
System.out.println(m.matches());
}
/* output:
true
false
true
tru...
postgresql COUNT(DISTINCT …) very slow
...s significantly slower than count(x) then you can speed up this query by maintaining x value counts in different table, for example table_name_x_counts (x integer not null, x_count int not null), using triggers. But your write performance will suffer and if you update multiple x values in single tra...
onTouchListener warning: onTouch should call View#performClick when a click is detected
...ired to call performClick, right? In this case I don't understand why the lint warning is still there
– Jiechao Wang
Nov 13 '17 at 22:40
9
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What is an Intent in Android?
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An Intent is an "intention" to perform an action; in other words,
a messaging object you can use to request an action from another app component
An Intent is basically a message to say you did or want something to happen. ...
What platforms have something other than 8-bit char?
Every now and then, someone on SO points out that char (aka 'byte') isn't necessarily 8 bits .
12 Answers
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Non-type template parameters
I understand that the non-type template parameter should be a constant integral expression. Can someone shed light why is it so ?
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Android - Dynamically Add Views into View
...nflater to create a view based on your layout template, and then inject it into the view where you need it.
LayoutInflater vi = (LayoutInflater) getApplicationContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = vi.inflate(R.layout.your_layout, null);
// fill in any details dynami...
Does every Javascript function have to return a value?
... reflects this) to return void:
void noReturn()//return type void
{
printf("%d\n", 123);
return;//return nothing, can be left out, too
}
//in JS:
function noReturn()
{
console.log('123');//or evil document.write
return undefined;//<-- write it or not, the result is the same
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Why invoke Thread.currentThread.interrupt() in a catch InterruptException block?
Why invoke the method Thread.currentThread.interrupt() in the catch block?
5 Answers
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