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Best Practice: Access form elements by HTML id or name attribute?

... Give your form an id only, and your input a name only: <form id="myform"> <input type="text" name="foo"> Then the most standards-compliant and least problematic way to access your input element is via: document.getElementById("myform"...
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if A vs if A is not None:

...if A: will call A.__nonzero__() (see Special method names documentation) and use the return value of that function. Here's the summary: object.__nonzero__(self) Called to implement truth value testing and the built-in operation bool(); should return False or True, or their integer equival...
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difference between use and require

Can anyone explain the difference between use and require , both when used directly and as :use and :require in the ns macro? ...
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How do I check if a string contains a specific word?

... or the boolean false if the needle isn't found. Since 0 is a valid offset and 0 is "falsey", we can't use simpler constructs like !strpos($a, 'are'). Edit: Now with PHP 8 you can do this: if (str_contains('How are you', 'are')) { echo 'true'; } RFC str_contains ...
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What is the difference between customErrors and httpErrors?

What is the difference between the customErrors and httpErrors sections of the web.config file in ASP.NET MVC applications? ...
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ViewPager with previous and next page boundaries

I'm designing a view with multiple pages. I want edges of previous and next pages to be show like below and implement a 2 finger swipe to switch between pages. ...
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Memcached vs APC which one should I choose? [closed]

...choose the best thing out there. In that article it says Memcached is slow and apc is fast so why is everyone choosing memcached ? ...
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Generating a UUID in Postgres for Insert statement?

My question is rather simple. I'm aware of the concept of a UUID and I want to generate one to refer to each 'item' from a 'store' in my DB with. Seems reasonable right? ...
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Entity Framework - Invalid Column Name '*_ID"

I've narrowed this down to some issue between Code First and Database first EF, but I'm not sure how to fix it. I'll try to be as clear as I can, but I honestly am missing some of the understanding here myself. This is Entity Framework 4.4 ...
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Equivalent of “throw” in R

...does one "throw" an error in R? I have a function that takes a data frame and some column names and does stuff with them. If the columns don't exist, I want the function to stop and to stop all functions depending on it. ...