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Execute the setInterval function without delay the first time
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It's simplest to just call the function yourself directly the first time:
foo();
setInterval(foo, delay);
However there are good reasons to avoid setInterval - in particular in some circumstances a whole load of setInterval events can arrive imm...
Putty: Getting Server refused our key Error
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OK, there was a small typo in my key. Apparently when pasting to file the first letter was cut off and it started with sh-rsa instead of ssh-rsa.
nrathathaus - your answer was very helpful, thanks a lot, this answer is credited to you :) I di...
Dynamically select data frame columns using $ and a character value
...e that must first be evaluated in the second argument. You may only pass a string which is never evaluated.
Instead use [ (or [[ if you want to extract only a single column as a vector).
For example,
var <- "mpg"
#Doesn't work
mtcars$var
#These both work, but note that what they return is d...
What should my Objective-C singleton look like? [closed]
My singleton accessor method is usually some variant of:
26 Answers
26
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Simple way to copy or clone a DataRow?
... later, call
// tableAux.Clear() first.
tableAux.ImportRow(row);
// Extract the cloned row from the aux. table:
var rowClone = tableAux.Rows[0];
Note: Shallow cloning is performed, which works as-is with column values that are value type instances, but more work would be needed to also crea...
Get file size, image width and height before upload
...ileReader API
In case you need images sources as long Base64 encoded data strings
<img src="data:image/png;base64,iVBORw0KGg... ...lF/++TkSuQmCC=">
const EL_browse = document.getElementById('browse');
const EL_preview = document.getElementById('preview');
const readImage = file ...
How to get the ThreadPoolExecutor to increase threads to max before queueing?
...rQueue is unbounded so you don't get a capacity-bounded task queue without extra work.
– Yeroc
Jan 10 '17 at 17:36
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How to use Git properly with Xcode?
...ct files, having the same effect as the script I provided only without any extra work.
Lastly, here is my complete .gitignore file, showing what I do have it set to ignore as there are a few things you don't want - in my case really just emacs remnants and the whole build directory:
# xcode noise
...
How to display a confirmation dialog when clicking an link?
... about it, if you use it for other purposes as well, maybe it is worth the extra load...
– Marcos Buarque
Dec 24 '14 at 21:29
1
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How to work with complex numbers in C?
...h:
creal(z1): get the real part (for float crealf(z1), for long double creall(z1))
cimag(z1): get the imaginary part (for float cimagf(z1), for long double cimagl(z1))
Another important point to remember when working with complex numbers is that functions like cos(), exp() and sqrt() must be repl...