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What are allowed characters in cookies?
What are the allowed characters in both cookie name and value? Are they same as URL or some common subset?
13 Answers
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ping response “Request timed out.” vs “Destination Host unreachable”
...n I ping an IP address, what is the difference between Request timed out and Destination host unreachable returned from the command?
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Why do we have map, fmap and liftM?
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map exists to simplify operations on lists and for historical reasons (see What's the point of map in Haskell, when there is fmap?).
You might ask why we need a separate map function. Why not just do away with the current
list-only map function, and rename fmap...
@class vs. #import
It is to my understanding that one should use a forward-class declaration in the event ClassA needs to include a ClassB header, and ClassB needs to include a ClassA header to avoid any circular inclusions. I also understand that an #import is a simple ifndef so that an include only happens once....
How do I execute inserts and updates in an Alembic upgrade script?
...ms.
Note that Alembic provides some basic data functions: op.bulk_insert() and op.execute(). If the operations are fairly minimal, use those. If the migration requires relationships or other complex interactions, I prefer to use the full power of models and sessions as described below.
The followi...
vs. . Which to use?
...ferences (basically you can put html into a <button></button>)
And another page describing why people avoid <button></button> (Hint: IE6)
Another IE problem when using <button />:
And while we're talking about IE, it's
got a couple of bugs related to the
width...
Log all queries in mysql
... has now a 'tracking' option for tables where you specify a log('version') and it will keep record of the queries affecting it with information about time and the whole query.
– gadget00
Aug 7 '13 at 14:57
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When creating HTML emails, should we use html, head, body tags?
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The right way is to follow the HTML standard. You can validate your HTML page here.
Your mail client should follow it and should throw away what's not supported or what's insecure like javascript.
UPDATE: after several down votes from people that gets angry whe...
Remove blank attributes from an Object in Javascript
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Hi, @EricNguyen, unlike C and other several languages, javascript does not have block scope for variables (only function scope), thus, the variable i will always leak into the scope after the for block.
– Gerardo Lima
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How can a time function exist in functional programming?
... I don't know much about functional programming. I read about it from here and there, and so came to know that in functional programming, a function returns the same output, for same input, no matter how many times the function is called. It's exactly like a mathematical function which evaluates to ...