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What is an “unwrapped value” in Swift?
... the second two cases is that the second two cases will give you a runtime error if optionalSquare is set to nil. Using the syntax in the first case, you can do something like this:
if let sideLength = optionalSquare?.sideLength {
println("sideLength is not nil")
} else {
println("sidelengt...
OAuth secrets in mobile apps
...send to your server and verify. Sorry I don't have the specifics. It is an error that could use some good examples.
– Dick Hardt
Mar 26 '15 at 21:13
3
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What is Autoloading; How do you use spl_autoload, __autoload and spl_autoload_register?
...nless I have a class which extends another class (parent). PHP then throws error that it cannot find that parent class, even they're all in the same directory/namespace! What is confusing is that literally only first level classes are found, so I had to put another spl_autoload_register() with anony...
How to declare a structure in a header that is to be used by multiple files in c?
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You might get a linker error, or you might not. In C, the linkage model allows for 'common' definitions, so multiple definitions with no initializer (and maybe with the same initializer) may work. It is a 'common extension'. Some compilers suppo...
How to remove/ignore :hover css style on touch devices
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I've used try/catch just in case some odd error shows up, that could crash the script, like deleteRule not working because of same-origin policy or flaky support on IE (edited the comment to reflect that). But yeah, in most cases, just a simple check should be suffic...
How is Math.Pow() implemented in .NET Framework?
....Exp(y * Math.Log(x));
}
But not a true substitute because it accumulates error from 3 floating point operations and doesn't deal with the weirdo domain problems that Pow() has. Like 0^0 and -Infinity raised to any power.
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How to correctly close a feature branch in Mercurial?
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I tried to follow this approach, but I still get an error when trying to push: abort: push creates new remote branches:. What could I have done wrong?
– kasperd
Nov 16 '15 at 10:48
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Git Cherry-pick vs Merge Workflow
...above. At worst you can end up with a very confused repository and subtle errors it will take you a long time to ferret out.
cherry-pick is useful for sampling out a small subset of changes from a topic branch you've basically decided to discard, but realized there are a couple of useful pieces on....
Why is my Git Submodule HEAD detached from master?
...ash> # hash which git showed you related to DETACHED HEAD
# if you get 'error: could not apply...' run mergetool and fix conflicts
$ git mergetool
$ git status # since your modifications are staged just remove untracked junk files
$ rm -rf <untracked junk file(s)>
$ git commit # without arg...
Proper SCSS Asset Structure in Rails
...ut could never get it to work properly (still was getting missing variable errors). Maybe I didn't do something correctly, but I think in the end the approach of manually listing each file is the right way to go, since with CSS order does matter.
– David Savage
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