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How do I append text to a file?
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I didn't know cat could be used like this! Like writing a journal entry. Also didn't know about what ctrl-d does. Thank you!
– houallet
Aug 15 '18 at 1:10
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PHP foreach change original array values
...ference (&) is ... controversial. I recommend not using it unless you know why you need it and test the results.
I would recommend doing the following:
foreach ($fields as $key => $field) {
if ($field['required'] && strlen($_POST[$field['name']]) <= 0) {
$fields[$key]...
Phonegap Cordova installation Windows
...les for window phone, etc platform... just use those templates.
I don't know how such an easy process could have worse documentation. It as if it was written by lawyers.
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Difference Between ViewData and TempData?
I know what ViewData is and use it all the time, but in ASP.NET Preview 5 they introduced something new called TempData.
6...
Which, if any, C++ compilers do tail-recursion optimization?
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ICC would do so, I believe. To the best of my knowledge, ICC produces the fastest code on the market.
– Paul Nathan
Oct 21 '08 at 4:04
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How to document Python code with doxygen [closed]
...f Doxygen and unify the documentation system in Sphinx. Awesome in theory. Now, in practice, the last time I checked the project wasn't ready for production.
pydoctor*: Very particular. Generates its own output. It has some basic integration with Sphinx, and some nice features.
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How do MySQL indexes work?
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The first thing you must know is that indexes are a way to avoid scanning the full table to obtain the result that you're looking for.
There are different kinds of indexes and they're implemented in the storage layer, so there's no standard between t...
Injecting $scope into an angular service function()
.../services that need to have access to that info (if there aren't any right now, don't be surprised if they start popping up soon).
Every time a new student is added (using the service's save() method), the service's own array of students will be updated and every other object sharing that array will...
How does grep run so fast?
...ality of GREP in shell, earlier I used to use substring method in java but now I use GREP for it and it executes in a matter of seconds, it is blazingly faster than java code that I used to write.(according to my experience I might be wrong though)
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Structs versus classes
... a meaningful, user-focused, relevant performance metric, and then you'll know whether the change has a meaningful effect on real users in relevant scenarios.
Structs consume less heap memory (because they are smaller and more easily compacted, not because they are "on the stack"). But they take lo...