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git add, commit and push commands in one?
... acp() { git commit -a -m "$1" && git push ; } ; acp'
(Of course, now, you will need to give a commit message: git acp "My message goes here!")
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When is del useful in python?
...ariable makes the intent clearer. Compare:
del foo
to
foo = None
I know in the case of del foo that the intent is to remove the variable from scope. It's not clear that foo = None is doing that. If somebody just assigned foo = None I might think it was dead code. But I instantly know what som...
What's the difference between lapply and do.call?
...he above means something like below.
list( sum( L[[1]]) , sum( L[[2]]))
Now let us do the same thing for do.call
do.call(sum, L)
It means
sum( L[[1]], L[[2]])
In our example, it returns 21. In short, lapply always returns a list while the return type of do.call really depends on the funct...
Difference between “process.stdout.write” and “console.log” in node.js?
...
I know this is a very old question but I didn't see anybody talking about the main difference between process.stdout.write and console.log and I just want to mention it.
As Mauvis Leford and TK-421 pointed out, the console.log ...
How can I trigger a JavaScript event click
...
UPDATE
This was an old answer. Nowadays you should just use click. For more advanced event firing, use dispatchEvent.
const body = document.body;
body.addEventListener('click', e => {
console.log('clicked body');
});
console.log('Using cl...
How do I compute derivative using Numpy?
...**2 + 1
def d_fun(x):
h = 1e-5
return (fun(x+h)-fun(x-h))/(2*h)
Now, you can numerically find the derivative at x=5:
In [1]: d_fun(5)
Out[1]: 9.999999999621423
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How to vertically center a div for all browsers?
...I built in some dynamic content to test the flexibility and would love to know if anyone sees any problems with it. It should work well for centered overlays also -- lightbox, pop-up, etc.
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How do I remove a property from a JavaScript object?
...d values. The delete operator is used to remove these keys, more commonly known as object properties, one at a time.
var obj = {
myProperty: 1
}
console.log(obj.hasOwnProperty('myProperty')) // true
delete obj.myProperty
console.log(obj.hasOwnProperty('myProperty')) // false
T...
Switch statement for string matching in JavaScript
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I know it's old, but this isn't quite true - you can actually do switch(true) { case /foo/.test(bar): ....
– Sean Kinsey
Oct 15 '11 at 2:50
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Override valueof() and toString() in Java enum
...h is the possibility for silent error with no indication or recovery. Also now the "name" value and the symbolic value in code (e.g. A, B) are different. +2 for being clever. -200 for being terribly clever. There is no way I would ever approve this an a code review.
– pedorro...