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Rails 4 multiple image or file upload using carrierwave
...Post attachment was successfully updated.' }
end
end
end
In rails 3 no need to define strong parameters and as you can define attribute_accessible in both the model and accept_nested_attribute to post model because attribute accessible is deprecated in rails 4.
For edit an attachment we ca...
Count the number of occurrences of a string in a VARCHAR field?
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346
This should do the trick:
SELECT
title,
description,
ROUND (
(
...
How to check if a file exists in the Documents directory in Swift?
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253
Swift 4.x version
let path = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userD...
Can You Get A Users Local LAN IP Address Via JavaScript?
...n!
– Ansuraj Khadanga
Jun 2 '16 at 13:17
7
It is just working on the chrome and firefox, And NOT ...
Compare double to zero using epsilon
...00000000 × 2^-1022 = 2^-1022
In fact there are (1022 - 52 + 1)×2^52 = 4372995238176751616 numbers between 0 and epsilon, which is 47% of all the positive representable numbers...
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Is R's apply family more than syntactic sugar?
... makeSOCKcluster(c("localhost","localhost"))
parSapply(cl, 1:20, get("+"), 3)
This example uses a socket cluster, for which no additional software needs to be installed; otherwise you will need something like PVM or MPI (see Tierney's clustering page). snow has the following apply functions:
par...
How do I make JavaScript beep?
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139
It's not possible to do directly in JavaScript. You'll need to embed a short WAV file in the HT...
SQL Server - transactions roll back on error?
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edited Mar 28 '12 at 21:37
Greg B
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iPhone UITextField - Change placeholder text color
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32 Answers
32
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Replace whitespaces with tabs in linux
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STANDARDS
The expand and unexpand utilities conform to IEEE Std 1003.1-2001
(``POSIX.1'').
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