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Check if all values of array are equal
... might be a bit late to the party... i think this doesn't work if your array is made of falses! for example try [false, false, false].reduce(function(a, b){return (a === b)?a:false;});
– George Flourentzos
Nov 27 '14 at 19:21
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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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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)
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How to break out of jQuery each Loop
...to a continue in a normal loop.
$.each(array, function(key, value) {
if(value === "foo") {
return false; // breaks
}
});
// or
$(selector).each(function() {
if (condition) {
return false;
}
});
s...
Checking in of “commented out” code [closed]
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There may be others with different experiences, but in mine checking in half-finished code is a horrible idea, period.
Here are the principles I have learned and try to follow:
Check in often - at least once, but preferably many times per day
Only ...
Authorative way to override onMeasure()?
...w is allowed to do. Currently there are three values:
MeasureSpec.UNSPECIFIED - You can be as big as you'd like
MeasureSpec.AT_MOST - As big as you want (up to the spec size), This is parentWidth in your example.
MeasureSpec.EXACTLY - No choice. Parent has chosen.
This is done so that Android ...
How to display a confirmation dialog when clicking an link?
...ntsByClassName('confirmation');
var confirmIt = function (e) {
if (!confirm('Are you sure?')) e.preventDefault();
};
for (var i = 0, l = elems.length; i < l; i++) {
elems[i].addEventListener('click', confirmIt, false);
}
</script>
This example will only wor...
Pythonic way of checking if a condition holds for any element of a list
I have a list in Python, and I want to check if any elements are negative. Specman has the has() method for lists which does:
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Difference between & and && in Java? [duplicate]
I was just wondering what the difference between & and && is?
A few days I wrote a condition for an if statement the looked something like:
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Checking Bash exit status of several commands efficiently
...been set to a command.
function mytest {
"$@"
local status=$?
if (( status != 0 )); then
echo "error with $1" >&2
fi
return $status
}
mytest "$command1"
mytest "$command2"
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