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Can't use method return value in write context
..., return value exists and contains null). Therefore:
if (!empty($r->getError()))
is logically equivalent to:
if ($r->getError())
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Rendering HTML inside textarea
I need to be able to render some HTML tags inside a textarea (namely , , , ) but textareas only interpret their content as text. Is there an easy way of doing it without relying on external libraries/plugins (I'm using jQuery)?
If not, do you know of any jQuery plugin I could use to do this?
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Determine Whether Integer Is Between Two Other Integers?
...e(1,4) is False. So better use the 1 >= r <= 4 as it avoids possible errors by newcomers
– tripplet
Jun 26 '14 at 8:01
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What is the Scala annotation to ensure a tail recursive function is optimized?
...eption("bang!")
| else bang(x-1)
| }
| }
<console>:9: error: could not optimize @tailrec annotated method: it contains a recursive call not in tail position
@tailrec def boom(x: Int): Int = {
^
<console>:13: error: could not optimize @tailrec ann...
MYSQL Truncated incorrect DOUBLE value
...ed with (what appeared to be) a numeric value in the where clause threw an error. Changing modes, it threw a warning instead, but still did not apply the update. Upon closer inspection, the column used in the where clause, despite only having what appeared to be integer values, was actually a varcha...
Creating default object from empty value in PHP?
I see this error only after upgrading my PHP environment to PHP 5.4 and beyond. The error points to this line of code:
16 A...
An error occurred while installing pg (0.17.1), and Bundler cannot continue
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Some kind of error resported here Installing PG gem on OS X - failure to build native extension
To install dependencies on Ubuntu try this:
sudo apt-get install libpq-dev
and this
gem install pg
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Rails raw SQL example
...ails? Because When I deploy this code in heroku,there is a request timeout error.I think this will be faster if I use raw sql.
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Django TemplateDoesNotExist?
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I had an embarrassing problem...
I got this error because I was rushing and forgot to put the app in INSTALLED_APPS. You would think Django would raise a more descriptive error.
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AngularJS ng-class if-else expression
With AngularJS I'm using ng-class the following way:
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