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How to convert string into float in JavaScript?
...f they're meant to be separate values, try this:
var values = "554,20".split(",")
var v1 = parseFloat(values[0])
var v2 = parseFloat(values[1])
If they're meant to be a single value (like in French, where one-half is written 0,5)
var value = parseFloat("554,20".replace(",", "."));
...
CABasicAnimation resets to initial value after animation completes
I am rotating a CALayer and trying to stop it at its final position after animation is completed.
15 Answers
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When to use enumerateObjectsUsingBlock vs. for
...o use and comes more naturally in the context.
While for(... in ...) is quite convenient and syntactically brief, enumerateObjectsUsingBlock: has a number of features that may or may not prove interesting:
enumerateObjectsUsingBlock: will be as fast or faster than fast enumeration (for(... in ......
Why doesn't Java Map extend Collection?
...t
mappings are not collections and
collections are not mappings. Thus, it
makes little sense for Map to extend
the Collection interface (or vice
versa).
If a Map is a Collection, what are the
elements? The only reasonable answer
is "Key-value pairs", but this
provides a very lim...
Remove a symlink to a directory
...ory. I want to get rid of that symlink, while keeping the directory behind it.
9 Answers
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How do I test if a string is empty in Objective-C?
...
You can check if [string length] == 0. This will check if it's a valid but empty string (@"") as well as if it's nil, since calling length on nil will also return 0.
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Is it possible to have SSL certificate for IP address, not domain name?
I want my site to use URLs like http://192.0.2.2/... and https://192.0.2.2/... for static content to avoid unnecessary cookies in request AND avoid additional DNS request.
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What's the best way to refactor a method that has too many (6+) parameters?
Occasionally I come across methods with an uncomfortable number of parameters. More often than not, they seem to be constructors. It seems like there ought to be a better way, but I can't see what it is.
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Random shuffling of an array
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Using Collections to shuffle an array of primitive types is a bit of an overkill...
It is simple enough to implement the function yourself, using for example the Fisher–Yates shuffle:
import java.util.*;
import java.util.concurrent.ThreadLocalRandom;
class Test
{
...
Adding a new entry to the PATH variable in ZSH
...Here, add this line to .zshrc:
export PATH=/home/david/pear/bin:$PATH
EDIT: This does work, but ony's answer below is better, as it takes advantage of the structured interface ZSH provides for variables like $PATH. This approach is standard for bash, but as far as I know, there is no reason to us...