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Are there disadvantages to using a generic varchar(255) for all text-based fields?
...stcode , first name , last name , town , country , phone number etc, all of which are defined as VARCHAR(255) even though none of these fields will ever come close to having 255 characters. (If you're wondering, it's this way because Ruby on Rails migrations map String fields to VARCHAR(25...
Better way of incrementing build number?
... template of Xcode?
The reason I ask this is that Project-Info.plist normally is under version control, and modifying it means that it will be marked as, well, modified.
If that is fine with you, then the following snippet will update the build number and mark the file as modified in the process...
Best practices around generating OAuth tokens?
...ere are any best practices for creating significantly secure tokens (especially Token/Secret combinations).
1 Answer
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IE7 Z-Index Layering Issues
...ex bug, but don't know how to fix it.
I have been playing with z-index all day long.
11 Answers
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How to get the process ID to kill a nohup process?
...&) will give you the PID at the command prompt. If your plan is to manually manage the process, you can save that PID and use it later to kill the process if needed, via kill PID or kill -9 PID (if you need to force kill). Alternatively, you can find the PID later on by ps -ef | grep "command na...
What are the differences between concepts and template constraints?
...To quickly summarise their meanings:
Constraint - A predicate over statically evaluable properties of a type. Purely syntactic requirements. Not a domain abstraction.
Axioms - Semantic requirements of types that are assumed to be true. Not statically checked.
Concepts - General, abstract requireme...
How to zero pad a sequence of integers in bash so that all have the same width?
...uce the following output:
00010
00011
00012
00013
00014
00015
More generally, bash has printf as a built-in so you can pad output with zeroes as follows:
$ i=99
$ printf "%05d\n" $i
00099
You can use the -v flag to store the output in another variable:
$ i=99
$ printf -v j "%05d" $i
$ echo $j...
How can I style an Android Switch?
...h slider images that let part of the thumb move out of the track was especially helpful as i couldn't work out how they were doing that. (the default slider has the pointy edge bits move past the end of the track to make a square end on one side)
– Glenn.nz
Apr...
Static variable inside of a function in C
...o() to the return from foo(); so it would be re-initialized to 5 on every call.
The keyword static acts to extend the lifetime of a variable to the lifetime of the programme; e.g. initialization occurs once and once only and then the variable retains its value - whatever it has come to be - over al...
Why do stacks typically grow downwards?
I know that in the architectures I'm personally familiar with (x86, 6502, etc), the stack typically grows downwards (i.e. every item pushed onto the stack results in a decremented SP, not an incremented one).
...