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Why are these numbers not equal?
...equal function. Or rather, since all.equal gives lots of detail about the differences if there are any, isTRUE(all.equal(...)).
if(isTRUE(all.equal(i,0.15))) cat("i equals 0.15") else cat("i does not equal 0.15")
yields
i equals 0.15
Some more examples of using all.equal instead of == (the las...
regex.test V.S. string.match to know if a string matches a regular expression
Many times I'm using the string match function to know if a string matches a regular expression.
3 Answers
...
Sort array by firstname (alphabetically) in Javascript
...ents and compare them (comparator)
It should return
something negative if first argument is less than second (should be placed before the second in resulting array)
something positive if first argument is greater (should be placed after second one)
0 if those two elements are equal.
In our ca...
Android: allow portrait and landscape for tablets, but force portrait on phone?
...
Here's a good way using resources and size qualifiers.
Put this bool resource in res/values as bools.xml or whatever (file names don't matter here):
<?xml version="1.0" encoding="utf-8"?>
<resources>
<bool name="portrait_only">true</...
What does !! mean in ruby?
... Why not just return .nil? instead of using !!? Is there a difference?
– ashes999
Sep 3 '14 at 13:52
3
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How do I get the first n characters of a string without checking the size or going out of bounds?
... is "neat", I think it is actually less readable than a solution that uses if / else in the obvious way. If the reader hasn't seen this trick, he/she has to think harder to understand the code. IMO, the code's meaning is more obvious in the if / else version. For a cleaner / more readable solutio...
Returning null as an int permitted with ternary operator but not if statement
... rules for the conditional operator (as described in the Java Language Specification, 15.25), and moves happily on. This will generate a NullPointerException at run time, which you can confirm by trying it.
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Detect IF hovering over element with jQuery
... looking for an action to call when hovering, but instead a way to tell if an element is being hovered over currently. For instance:
...
Checking in of “commented out” code [closed]
...
There may be others with different experiences, but in mine checking in half-finished code is a horrible idea, period.
Here are the principles I have learned and try to follow:
Check in often - at least once, but preferably many times per day
Only ...
Best way to alphanumeric check in JavaScript
... 0, len = str.length; i < len; i++) {
code = str.charCodeAt(i);
if (!(code > 47 && code < 58) && // numeric (0-9)
!(code > 64 && code < 91) && // upper alpha (A-Z)
!(code > 96 && code < 123)) { // lower alpha (a-z)
...