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What is MOJO in Maven?
I'm reading about Maven right now and everywhere in a text I see this word (mojo). I approximately understand what it means, but I would not refuse from a good explanation. I tried to google, but found only non-maven explanations.
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'heroku' does not appear to be a git repository
...YourAppName
Lastly add git remote:
$ heroku git:remote -a YourAppName
Now you can safely deploy your app with:
$ git push heroku master
You should wait for some time and see if you don't get any error/interrupt on console while deploying. For details look at heroku article.
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Why are static variables considered evil?
...n't be tested, then it IS bad design; because if I can't test it, I can't know that it works. Would you buy a car if the salesperson told you "The design of this model prevents it from being tested, so I don't know if it actually runs"? Testability is so crucial for software (as well as cars), tha...
Pass a variable into a partial, rails 3?
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Didn't know about the :spacer_template option, really nice. Thanks!
– Claudio Acciaresi
Jan 17 '11 at 12:42
11
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Does SQLAlchemy have an equivalent of Django's get_or_create?
... new record, it will raise IntegrityError. The whole thing gets messed up, now we don't know what actually happened and we get another error, that no record is found.
– rajat
Oct 8 '15 at 19:31
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How to merge two arrays in JavaScript and de-duplicate items
...ternet Explorer Technical Preview.
But if you use Babel, you can have it now.
const input = [
[1, 2, 3],
[101, 2, 1, 10],
[2, 1]
];
const mergeDedupe = (arr) => {
return [...new Set([].concat(...arr))];
}
console.log('output', mergeDedupe(input));
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How to get all subsets of a set? (powerset)
... to for i in range(1, 1 << x).
Returning to this years later, I'd now write it like this:
def powerset(s):
x = len(s)
masks = [1 << i for i in range(x)]
for i in range(1 << x):
yield [ss for mask, ss in zip(masks, s) if i & mask]
And then the test code...
How to maintain aspect ratio using HTML IMG tag
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This makes no sense for dynamic applications. It is not known whether width or height will be at 64px, as it depends on the ratio of the image. Why is this the upvoted response?
– Koenigsberg
Jul 31 '18 at 8:45
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what is the preferred way to mutate a React state?
...ldn't you be wrapping the function body in parenthesis? As it stands right now in your example, the braces after the fat arrow would start a block, not an object. Something like this: this.setState((state) => ({ list: state.list.push(newObj) }))
– kumarharsh
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How do I scroll to an element within an overflowed Div?
...at a time. What is a good way to scroll to item #10, and then item #20? I know the height of all the items.
7 Answers
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