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Difference between “or” and || in Ruby? [duplicate]
...o_this or do_that idiom, where do_this returns false or nil if there is an error and only then is do_that executed instead. (Analogous, there is also the do_this and then_do_that idiom.)
Examples:
download_file_via_fast_connection or download_via_slow_connection
download_latest_currency_rates and ...
Are there strongly-typed collections in Objective-C?
...ion of type 'NSString *'
And in Swift code, they will produce a compiler error:
var str: String = arr[0]
var num: Int = arr[0] //Error 'String' is not convertible to 'Int'
Lightweight Generics are intended to be used with NSArray, NSDictionary and NSSet, but you can also add them to your own cl...
Can I embed a custom font in an iPhone application?
... }
– Steve Potter
Mar 29 '12 at 20:05
26
If your code is not working, make sure you found font f...
Trying to understand CMTime and CMTimeMake
...tion
– Corey Floyd
Aug 29 '13 at 17:05
I wonder why setMaxRecordedDuration needs the preferredTimeScale when frame_rat...
Semicolon before self-invoking function? [duplicate]
...nExpression)()
In my case it isn't about "safety" or trying to "catch an error" (honestly, if your style is to use semi-colons and you forget a semi-colon, then you've already created the error elsewhere and writing a ; at the start for "safety" is hogwash). No; in my case it is done for consisten...
How to get Ruby / Homebrew / RVM to work on Yosemite?
...
This error can easily be fixed in the following steps:
1) Open terminal
2) Type nano /usr/local/Library/brew.rb
3) In the first line change “1.8″ to “Current”, so it should look like this:
#!/System/Library/Frameworks/...
Generate random numbers following a normal distribution in C/C++
...umption.
– bruziuz
Jan 10 '16 at 22:05
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show 3 more comments
...
How to drive C#, C++ or Java compiler to compute 1+2+3+…+1000 at compile time?
...(){
sum_from<1>::to<1000>::result();
}
Output for GCC:
error: declaration of ‘struct sum_from<1u>::to<1000u>::equals<500500u>’
Live example on Ideone.
Output for MSVC10:
error C2514: 'sum_from<Start>::to<Goal>::equals<Result>' : class h...
Re-raise exception with a different type and message, preserving existing information
...hierarchy for the exceptions that it can raise (e.g. inheriting from a FooError abstract class for all the foo module's specific exceptions). This allows users of the module to catch those particular exceptions and handle them distinctly, if needed. But many of the exceptions raised from the mod...
What is N-Tier architecture?
...fference?
– chakrit
Nov 23 '08 at 8:05
7
It depends on how you count "tiers" (logical, physical, ...