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Difference between this and self in JavaScript
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Unless set elsewhere, the value of self is window because JavaScript lets you access any property x of window as simply x, instead of window.x. Therefore, self is really window.self, which is different to this.
window.self === wind...
How to check if a folder exists
I am playing a bit with the new Java 7 IO features, actually I trying to receive all the xml files of a folder. But this throws an exception when the folder does not exist, how can I check if the folder exists with the new IO?
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What's this =! operator? [duplicate]
...ight be an obfuscated way of writing
a = !b;
if (a) {
// whatever
}
setting a to the logical inverse of b, and testing whether the result is true (or, equivalently, whether b was false).
Or it might be a mistyping of a != b.
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JavaScript math, round to two decimal places [duplicate]
I have the following JavaScript syntax:
13 Answers
13
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Make Heroku run non-master Git branch
... editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
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Merge (with squash) all changes from another branch as a single commit
In Git, is there a way to merge all changes from one branch into another, but squash to a single commit at the same time?
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Convert decimal to hexadecimal in UNIX shell script
... decimal to hexadecimal. I assume you mean convert hex to dec. To do that, set ibase=16. You might like to read the manual on bc for more details.
– Bill Karwin
May 28 '15 at 1:58
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AngularJS For Loop with Numbers & Ranges
Angular does provide some support for a for loop using numbers within its HTML directives:
24 Answers
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Grouped LIMIT in PostgreSQL: show the first N rows for each group?
... ORDER BY
name, id
OFFSET 1 LIMIT 1
),
(
SELECT xi
FROM xxx xi
WHERE xi.section_id = xo.section_id
ORDER BY
name DESC, i...
How would Git handle a SHA-1 collision on a blob?
...t's actually pretty easy to mitigate against, and there's already been two sets of patches posted for that mitigation.
(3) And finally, there's actually a reasonably straightforward transition to some other hash that won't break the world - or even old git repositories.
Regarding that transit...