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Devise form within a different controller
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As Andres says, the form calls helpers which are specified by Devise and so aren't present when you access a Devise form from a non-Devise controller.
To get around this, you need to add the following methods to the helper class of the controller you wish to display the form u...
How to convert an entire MySQL database characterset and collation to UTF-8?
...ablename CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
Or if you're still on MySQL 5.5.2 or older which didn't support 4-byte UTF-8, use utf8 instead of utf8mb4:
ALTER DATABASE databasename CHARACTER SET utf8 COLLATE utf8_unicode_ci;
ALTER TABLE tablename CONVERT TO CHARACTER SET u...
Subtract two variables in Bash
...r $FIRSTV - $SECONDV`
Be aware of the exit status:
The exit status is 0 if EXPRESSION is neither null nor 0, 1 if EXPRESSION is null or 0.
Keep this in mind when using the expression in a bash script in combination with set -e which will exit immediately if a command exits with a non-zero status...
How can I remove non-ASCII characters but leave periods and spaces using Python?
... The only problem with using filter is that it returns an iterable. If you need a string back (as I did because I needed this when doing list compression) then do this: ''.join(filter(lambda x: x in string.printable, s).
– cjbarth
Sep 5 '14 at 19:23
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Intermittent log4net RollingFileAppender locked file issue
...he lock for a long time).
One implication of the default behavior is that if you're using it under a Web site that is being executed under multiple worker processes running on the same machine, each one will try to acquire and hold onto that lock indefinitely, and two of them are just going to lose...
Formatting text in a TextBlock
...neTwo}" />
</TextBlock.Inlines>
You can bind through converters if you have bold as a boolean (say).
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Google Developer Tools “Network” Tab clears after redirect
...ols "Network" Tab clears after redirect to another page and i want to know if there is any way to keep all request?
1 Answe...
How to loop through an associative array and get the key? [duplicate]
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If you use array_keys(), PHP will give you an array filled with just the keys:
$keys = array_keys($arr);
foreach($keys as $key) {
echo($key);
}
Alternatively, you can do this:
foreach($arr as $key => $value) {
...
How to get document height and width without using jquery
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If a website has a border it takes that off the width with this solution but not the jQuery solution. Unlikely to be a border on the body but worth knowing. window.innerWidth solves this
– BritishSam
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Why can lambdas be better optimized by the compiler than plain functions?
...so passing them to a function template will instantiate a new function specifically for that object. The compiler can thus trivially inline the lambda call.
For functions, on the other hand, the old caveat applies: a function pointer gets passed to the function template, and compilers traditionally...