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Turning multi-line string into single comma-separated
...:
echo "data" | awk -vORS=, '{ print $2 }' | sed 's/,$/\n/'
To break it down:
awk is great at handling data broken down into fields
-vORS=, sets the "output record separator" to ,, which is what you wanted
{ print $2 } tells awk to print the second field for every record (line)
file.txt is your...
What does auto&& tell us?
...iding copies) when the original initializer was a modifiable rvalue.
What does this mean as to whether we can or when we can steal resources from var? Well since the auto&& will bind to anything, we cannot possibly try to rip out vars guts ourselves - it may very well be an lvalue or even c...
What are the risks of running 'sudo pip'?
...comments or responses that state emphatically that running pip under sudo is "wrong" or "bad", but there are cases (including the way I have a bunch of tools set up) where it is either much simpler, or even necessary to run it that way.
...
How do I check if an element is really visible with JavaScript? [duplicate]
...
For the point 2.
I see that no one has suggested to use document.elementFromPoint(x,y), to me it is the fastest way to test if an element is nested or hidden by another. You can pass the offsets of the targetted element to the function.
Here's PPK test page on elementFromPoint. ...
How to paste over without overwriting register
Does anyone know of a way to paste over a visually selected area without having the selection placed in the default register?
...
how to delete all cookies of my website in php
...ookie()
Taken from that page, this will unset all of the cookies for your domain:
// unset cookies
if (isset($_SERVER['HTTP_COOKIE'])) {
$cookies = explode(';', $_SERVER['HTTP_COOKIE']);
foreach($cookies as $cookie) {
$parts = explode('=', $cookie);
$name = trim($parts[0]);...
When to choose checked and unchecked exceptions
...uage with checked exceptions), when creating your own exception class, how do you decide whether it should be checked or unchecked?
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How to add property to a class dynamically?
...__get__ tacks on the calling instance as the first argument; in effect, it does this:
def __get__(self, instance, owner):
return functools.partial(self.function, instance)
Anyway, I suspect this is why descriptors only work on classes: they're a formalization of the stuff that powers classes ...
What do commas and spaces in multiple classes mean in CSS?
Here is an example that I do not understand:
9 Answers
9
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How to add extension methods to Enums
... some of the switch/if handling and abstract them away a bit until you can do something better. Remember to check the values are in range too.
You can read more here at Microsft MSDN.
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