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How to delete selected text in the vi editor
I am using PuTTY and the vi editor. If I select five lines using my mouse and I want to delete those lines, how can I do that?
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Making 'git log' ignore changes for certain paths
... shell, use ':!sub' or ":\!sub" instead to avoid bash: ... event not found errors
Note: Git 2.13 (Q2 2017) will add a synonym ^to !
See commit 859b7f1, commit 42ebeb9 (08 Feb 2017) by Linus Torvalds (torvalds).
(Merged by Junio C Hamano -- gitster -- in commit 015fba3, 27 Feb 2017)
pathspec magic...
What is the best method of handling currency/money?
...may also want to include a validation in your items like
def validate
errors.add(:price, "should be at least 0.01") if price.nil? || price < 0.01
end
to sanity-check your values.
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How do I programmatically determine if there are uncommitted changes?
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VonCVonC
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“var” or no “var” in JavaScript's “for-in” loop?
...obal (if you are in a strict mode, using strict, global variables throw an error). This can lead to problems like the following.
function f (){
for (i=0; i<5; i++);
}
var i = 2;
f ();
alert (i); //i == 5. i should be 2
If you write var i in the for loop the alert shows 2.
JavaScript Scopi...
Adding minutes to date time in PHP
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$minutes_to_add = 5;
$time = new DateTime('2011-11-17 05:05');
$time->add(new DateInterval('PT' . $minutes_to_add . 'M'));
$stamp = $time->format('Y-m-d H:i');
The ISO 8601 standard for duration is a string in the form of P{y}Y{m1}M{d}DT{h}H{m2}M{s}S where the {*} parts...
Is there a [Go to file…]?
In modern IDEs, there is a keyboard shortcut to open a file by typing its name without putting your hand on the mouse. For example:
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VBA - how to conditionally skip a for loop iteration
...write robust VBA without the Goto statement simply because you need it for error handling (i.e., On Error Goto).
– mwolfe02
Feb 25 '15 at 0:55
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Stop pip from failing on single package when installing with requirements.txt
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'main' is not a part of pip. Error.
– Pranzell
Jul 29 '19 at 14:29
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How to open, read, and write from serial port in C?
... tty;
if (tcgetattr (fd, &tty) != 0)
{
error_message ("error %d from tcgetattr", errno);
return -1;
}
cfsetospeed (&tty, speed);
cfsetispeed (&tty, speed);
tty.c_cflag = (tty.c_cflag & ~CSIZE) | CS8; ...