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How to send only one UDP packet with netcat?
... you have a -c switch:
-c, --close close connection on EOF from stdin
Hence,
echo "hi" | nc -cu localhost 8000
should do the trick.
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Add only non-whitespace changes
...pository of knowledge. People other than the original poster might benefit from the answers given, and their circumstances vary. That's why I believe answers conveying a general principle are valid, rather than targeting only a single specific situation.
– Steve Pitchers
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How can I pretty-print JSON using node.js?
...ole.dir().
It uses syntax-highlighting, smart indentation, removes quotes from keys and just makes the output as pretty as it gets.
const jsonString = `{"name":"John","color":"green",
"smoker":false,"id":7,"city":"Berlin"}`
const object = JSON.parse(jsonString)
console.dir(ob...
JQuery .on() method with multiple event handlers to one selector
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I learned something really useful and fundamental from here.
chaining functions is very usefull in this case which works on most jQuery Functions including on function output too.
It works because output of most jQuery functions are the input objects sets so you can use th...
Cost of exception handlers in Python
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The excerpt you posted is from the Design and History FAQ.
– nitsas
Jan 22 '12 at 1:22
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Convert DateTime to String PHP
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Its worked for me
$start_time = date_create_from_format('Y-m-d H:i:s', $start_time);
$current_date = new DateTime();
$diff = $start_time->diff($current_date);
$aa = (string)$diff->format('%R%a');
echo gettype($aa);
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Determining if a number is either a multiple of ten or within a particular set of ranges
...100)) {
// Do something
}
But you might notice that, if you subtract 1 from num, you'll have the ranges:
10-19, 30-39, 50-59, 70-79, 90-99
In other words, all two-digit numbers whose first digit is odd. Next, you need to come up with a formula that expresses this. You can get the first digit ...
C# Error: Parent does not contain a constructor that takes 0 arguments
...ass's constructor takes a parameter but you are not passing that parameter from the child to the parent.
Constructors are not inherited in C#, you have to chain them manually.
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Why are `private val` and `private final val` different?
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I think the confusion here arises from conflating immutability with the semantics of final. vals can be overridden in child classes and therefore can't be treated as final unless marked as such explicitly.
@Brian The REPL provides class scope at the line le...
How do I make class methods / properties in Swift?
...associated object tied to the class object. (Only works in classes derived from NSObject.)
private var fooPropertyKey: Int = 0 // value is unimportant; we use var's address
class YourClass: SomeSubclassOfNSObject {
class var foo: FooType? { // Swift 1.1 doesn't have stored class properties;...