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javascript check for not null
...
It's not a simple double negative. It's a transforming double negative. You are basically transforming the variable to a boolean. There's a lot to say on the subject but suffice it to say that in cases where your variable is 0, false, null, undefined or some such val...
How to make node.js require absolute? (instead of relative)
...dules/app:
node_modules/*
!node_modules/app
If your application had transforms configured in package.json, you'll
need to create a separate package.json with its own transform field in
your node_modules/foo or node_modules/app/foo component directory
because transforms don't apply acros...
How to animate the change of image in an UIImageView?
...ouncy animation:
var selected: Bool {
willSet(selected) {
let expandTransform:CGAffineTransform = CGAffineTransformMakeScale(1.15, 1.15);
if (!self.selected && selected) {
UIView.transitionWithView(self.imageView,
duration:0.1,
options: UIViewAnimationOptions...
How do I fix blurry text in my HTML5 canvas?
...h = w + "px";
can.style.height = h + "px";
can.getContext("2d").setTransform(ratio, 0, 0, ratio, 0, 0);
return can;
}
//Create canvas with the device resolution.
var myCanvas = createHiDPICanvas(500, 250);
//Create canvas with a custom resolution.
var myCustomCanvas = createHiDPICanvas...
How do I set a background-color for the width of text, not the width of the entire element, using CS
... */
top: 0;
left: 50%; /* part1 of centering with translateX/Y */
transform: translateX(-50%); /* part2 of centering with translateX/Y */
white-space: nowrap; /* text lines will collapse without this */
padding:5px;font-size:20px;background-color:green;color:#ffffff;
}
<h1>T...
Coarse-grained vs fine-grained
...
In term of dataset like a text file ,Coarse-grained meaning we can transform the whole dataset but not an individual element on the dataset While fine-grained means we can transform individual element on the dataset.
...
How does the main() method work in C?
...* ... */
}
But when the compiler sees it, it essentially performs a code transformation so that the function which it compiles looks more like this:
int main(int __argc_ignore, char **__argv_ignore, char **__envp_ignore)
{
/* ... */
}
except that the names __argc_ignore don't literally exist...
How do I create and access the global variables in Groovy?
...finition or in Groovy 1.8 we can add the @Field annotation.
import groovy.transform.Field
var1 = 'var1'
@Field String var2 = 'var2'
def var3 = 'var3'
void printVars() {
println var1
println var2
println var3 // This won't work, because not in script scope.
}
...
`levels
...ls<-`(factor(x), y))
It's kind of beautiful that this pure-functional transformation (up until the very end, where the assignment happens) is equivalent to what an assignment would be in an imperative language. If I remember correctly this construct in functional languages is called a lens.
Bu...
Does Python optimize tail recursion?
...n Tail Calls (2009-04-27)
You can manually eliminate the recursion with a transformation like this:
>>> def trisum(n, csum):
... while True: # Change recursion to a while loop
... if n == 0:
... return csum
... n, csum = n - 1, csum + n ...