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How to tell whether a point is to the right or left side of a line
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For what it's worth, this can be slightly simplified to return (b.x - a.x)*(c.y - a.y) > (b.y - a.y)*(c.x - a.x);, but the compiler probably optimizes that anyway.
– Nicu Stiurca
Oct 7 '1...
Lambda expression vs method reference [closed]
...nd you should ignore them. The goal is writing code that is crystal clear what it does. Very often (but not always!) method refs win on this metric, so we included them as an option, to be used in those cases.
A key consideration about whether method refs clarify or obfuscate intent is whether ...
Is double square brackets [[ ]] preferable over single square brackets [ ] in Bash?
... is generally safer to use. But it is not portable - POSIX doesn't specify what it does and only some shells support it (beside bash, I heard ksh supports it too). For example, you can do
[[ -e $b ]]
to test whether a file exists. But with [, you have to quote $b, because it splits the argument ...
What does immutable mean?
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What about below code. The string value is changed now. var name = "Santosh"; console.log(name.substr(0,2)); var name = "kumar" console.log(name); How its still immutable
– Santosh
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How to replace an item in an array with Javascript?
... contains function to abstract this check and make it easier to understand what's going on. What's awesome is this works on arrays and strings both:
var contains = function (haystack, needle) {
return !!~haystack.indexOf(needle);
};
// can be used like so now:
if (contains(items, 3452)) {
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How useful/important is REST HATEOAS ( maturity level 3)?
...VER, billions of people experience the benefits of REST today. Do you know what the "checkout" URL is at Amazon? I don't. Yet, I can checkout every day. Has that URL changed? I dunno, I don't care.
Do you know does care? Anyone who's written a screen scraped Amazon automated client. Someone who ha...
How do I clear only a few specific objects from the workspace?
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what if I want to remove all variables with names start with letter A, say 'A001', 'A002'.... 'A999'. I don't want to type so many variable names. Thanks!
– user3768495
Sep 22 '15 at 16:...
Is it possible to use “/” in a filename?
...*name)
return 0;
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This code applies to any file system. What's this mean? It means that if you try to pass a parameter with an actual '/' character as the name of the file using traditional means, it will not do what you want. There is no way to escape the character. If a filesyst...
How do I replace all line breaks in a string with elements?
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str = str.replace(/(?:\r\n|\r|\n)/g, '<br>');
In case you wonder what ?: means.
It is called a non-capturing group. It means that group of regex within the parentheses won't be saved in memory to be referenced later.
You can check out these threads for more information:
https://stackoverfl...
Ternary operation in CoffeeScript
...bitrariness of ?:, I think if..then..else is too verbose a replacement for what is supposed to be a concise expression. And ?: is after all a very ingrained standard among many languages, JavaScript among them. Notwithstanding all that, it seems to be set in stone at this stage.]
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