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In Swift how to call method with parameters on GCD main thread?
...
Swift 3+ & Swift 4 version:
DispatchQueue.main.async {
print("Hello")
}
Swift 3 and Xcode 9.2:
dispatch_async_on_main_queue {
print("Hello")
}
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Bash set +x without it being printed
..._STATUS=$? ; set +x; } 2>/dev/null; (exit $PREV_STATUS)'
trace_on
echo hello
trace_off
echo "status: $?"
trace_on
(exit 56)
trace_off
When executed:
$ ./test.sh
+ echo hello
hello
status: 0
+ exit 56
status: 56
sh...
A proper wrapper for console.log with correct line number?
...g = true //global debug state
debug = Debugger(isDebug, this)
debug.log('Hello log!')
debug.trace('Hello trace!')
Now you can add it to your classes:
var MyClass = function() {
this.isDebug = true //local state
this.debug = Debugger(isDebug, this)
this.debug.warn('It works in classses')
}...
Why should eval be avoided in Bash, and what should I use instead?
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@anishsane: For your Suppose, x="echo hello world"; Then to execute whatever is contained in x, we can use eval $x However, $($x) is wrong, isn't it? Yes: $($x) is wrong because it runs echo hello world and then tries to run the captured output (at least in the ...
New line in JavaScript alert box
...r like \n \t etc... in js alert box
for exemple in php script:
$string = 'Hello everybody \n this is an alert box';
echo "<script>alert(\"$string\")</script>";
But a second possible problem arrives when you want to display a string specified in double quoted.
see link text
If the s...
How to calculate UILabel width based on text length?
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Swift 4 Answer who are using Constraint
label.text = "Hello World"
var rect: CGRect = label.frame //get frame of label
rect.size = (label.text?.size(attributes: [NSFontAttributeName: UIFont(name: label.font.fontName , size: label.font.pointSize)!]))! //Calculate as per label fo...
Search for string and get count in vi editor
...nding and counting in particular range of line number 1 to 10:
:1,10s/hello//gn
Please note, % for whole file is repleaced by , separated line numbers.
For finding and replacing in particular range of line number 1 to 10:
:1,10s/helo/hello/gn
...
How do I add a bullet symbol in TextView?
... not working if I set text programmatically. textView.setText("&#8226; hello");
– Dwivedi Ji
Apr 23 '14 at 5:27
27
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Why doesn't print work in a lambda?
...u can't assign the result of print to a variable:
>>> x = print "hello"
File "<stdin>", line 1
x = print "hello"
^
SyntaxError: invalid syntax
You also can't put a variable assignment in a lambda, since assignments are statements:
>>> lambda y: (x = y)
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Retrieving a random item from ArrayList [duplicate]
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Hello, this option throws up a null pointer on this line int index = randomGenerator.nextInt(catalogue.size()); when I try to call the method.
– Will
Feb 17 '11 at 21:49
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