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Cannot use ref or out parameter in lambda expressions
...e visible on the ref parameter itself. Both within the method and in the caller.
These are somewhat incompatible properties and are one of the reasons they are disallowed in lambda expressions.
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@class vs. #import
... True. Don't know if it's about circular inclusions, or incorrect ordering, but I adventured away from that rule (with one import in a header, imports were no longer needed in subclasse's implementation), and soon it got really messy. Bottom line, follow that rule, and the compiler will be ...
Error when testing on iOS simulator: Couldn't register with the bootstrap server
... or quiting the simulator does not help. I have to restart the computer in order to make it work.
– Øystein
Nov 14 '11 at 14:20
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Chaining multiple MapReduce jobs in Hadoop
...ntifying dependent things and 'executing' them in dependency (topological) order.
Or you can use a Cascade (and MapReduceFlow) in Cascading ( http://www.cascading.org/ ). A future version will support Riffle annotations, but it works great now with raw MR JobConf jobs.
A variant on this is to not ...
Correct format specifier to print pointer or address?
...C99.
All object pointers are implicitly convertible to void* in C, but in order to pass the pointer as a variadic argument, you have to cast it explicitly (since arbitrary object pointers are only convertible, but not identical to void pointers):
printf("x lives at %p.\n", (void*)&x);
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How do I convert seconds to hours, minutes and seconds?
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By using the divmod() function, which does only a single division to produce both the quotient and the remainder, you can have the result very quickly with only two mathematical operations:
m, s = divmod(seconds, 60)
h, m = ...
Autoresizing masks programmatically vs Interface Builder / xib / nib
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Changing UIButton text
... dot-notation to edit them won't work, and so you need explicit methods in order to edit them. This makes sense for me at least.
– erdekhayser
Aug 26 '13 at 14:45
1
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Formatting a float to 2 decimal places
...mance Warning
Interpolated strings are slow. In my experience this is the order (fast to slow):
value.ToString(format)+" blah blah"
string.Format("{0:format} blah blah", value)
$"{value:format} blah blah"
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How to call function from another file in go language?
... running.
Run either of below two commands:
$go run test1.go test2.go. //order of file doesn't matter
$go run *.go
You should do similar thing, if you want to build them.
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