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Why does Java's hashCode() in String use 31 as a multiplier?
... for 31 since 33 is not a prime:
Of the remaining
four, I'd probably select P(31), as it's the cheapest to calculate on a RISC
machine (because 31 is the difference of two powers of two). P(33) is
similarly cheap to calculate, but it's performance is marginally worse, and
33 is composit...
Laravel Eloquent Sum of relation's column
...([
'activity AS paid_sum' => function ($query) {
$query->select(DB::raw("SUM(amount_total) as paidsum"))->where('status', 'paid');
}
]);
it returns
"paid_sum_count" => "320.00"
in Deals attribute.
This it now the sum which i wanted to get not the count.
...
JavaScript: Upload file
... type="file" onchange="SavePhoto(this)" >
<br><br>
Before selecting the file open chrome console > network tab to see the request details.
<br><br>
<small>Because in this example we send request to https://stacksnippets.net/upload/image the response code will ...
Delete local Git branches after deleting them on the remote repo
... powershell, this is the equivalent to the answer above:
git branch -vv | Select-String -Pattern ': gone]' | ForEach-Object{($_ -split "\s+")[1]} | %{ git branch -D $_ }
Filter all the branches that are marked as gone
Call git branch -D on each of the found branches
...
How should one go about choosing a default TCP/IP port for a new service?
...veloping an app that will listen on a TCP/IP port, how should one go about selecting a default port? Assume that this app will be installed on many computers, and that avoiding port conflicts is desired.
...
Get time in milliseconds using C#
...
This is much more useful than the selected answer for search results and even for what I gather from the original question.
– bwoogie
Dec 21 '16 at 20:05
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How can I check if the current date/time is past a set date/time?
... answered May 14 '10 at 7:26
Select0rSelect0r
11.3k99 gold badges3838 silver badges5656 bronze badges
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How to make good reproducible pandas examples
...e a bit with np.random.choice. For example, in column g, we have a random selection of 6 dates from 2011. Additionally, by setting replace=False we can assure these dates are unique -- very handy if we want to use this as an index with unique values.
Fake stock market data
In addition to taking...
Sending message through WhatsApp
...act information and send message without having to touch on the contact to select and click ok to send ??
– user1492955
Jun 13 '13 at 7:02
1
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How can you run a command in bash over until success
...I did && break after my verification command though instead of the select case.
– carlin.scott
Apr 27 '18 at 21:19
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