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Easy way to prevent Heroku idling?
...ll ping your site twice per minute, thus preventing the dyno from idling.
More or less the same solution as Jesse but maybe more integrated to Heroku... And with a few perks (performance monitoring is just great).
Note: to all those saying it doesn't work: the important part in my answer is "...
Pointers vs. values in parameters and return values
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One case where you should often use a pointer:
Receivers are pointers more often than other arguments. It's not unusual for methods to modify the thing they're called on, or for named types to be large structs, so the guidance is to default to pointers except in rare cases.
Jeff Hodges' copyfi...
PHP substring extraction. Get the string before the first '/' or the whole string
...using the limit parameter to explode so that php won't scan the string any more than what's needed.
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jQuery: Test if checkbox is NOT checked
... trouble figuring this out. I have two checkboxes (in the future will have more):
18 Answers
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Creating a dictionary from a csv file?
...s you lemons. That's when you print a pretty error message and fail, or - more appropriate for this case - a pretty warning message and succeed.
– Nate
Jul 19 '11 at 1:25
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How do you maintain development code and production code? [closed]
...he Git repo itself, with the gitworkflow (one word, illustrated here).
See more at rocketraman/gitworkflow. The history of doing this vs Trunk-Based-Development is noted in the comments and discussions of this article by Adam Dymitruk.
(source: Gitworkflow: A Task-Oriented Primer)
Note: in tha...
In .NET, which loop runs faster, 'for' or 'foreach'?
... month, with the following conclusions:
for loops on List are a bit more than 2 times cheaper than foreach
loops on List.
Looping on array is around 2 times cheaper than looping on List.
As a consequence, looping on array using for is 5 times cheaper
than looping on List using foreach...
How can I set the default value for an HTML element?
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Unnamed/anonymous namespaces vs. static functions
...are back to being essentially two ways of doing the exact same thing. For more discussion please see this SO question.
Unnamed namespaces still have the advantage of allowing you to define translation-unit-local types. Please see this SO question for more details.
Credit goes to Mike Percy for b...
What are enums and why are they useful?
...de the same level of checking help from the compiler. Boilerplate is just more typing. But saving a lot of typing makes the programmer more efficient (see 1), so it's a worthwhile feature.
It's worthwhile for at least one more reason, too:
Switch statements
One thing that the static final enum ...