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Which C++ idioms are deprecated in C++11?
...loop. The code looks more or less the same, but the lambda introduces some extra punctuation. You can use equivalents of things like boost::irange to apply it to more loops than just those that obviously use iterators. Plus the range-based for loop has greater flexibility, in that you can exit early...
Why should I avoid std::enable_if in function signatures
...lity: constructors don't have return types, and some operators cannot have extra arguments, so neither of the other two options can be applied everywhere. Putting enable_if in a template parameter works everywhere since you can only use SFINAE on templates anyway.
For me, the readability aspect is...
Better to 'try' something and catch the exception or test if it's possible first to avoid an excepti
...ept over if/else if that results in
speed-ups (for example by preventing extra lookups)
cleaner code (fewer lines/easier to read)
Often, these go hand-in-hand.
speed-ups
In the case of trying to find an element in a long list by:
try:
x = my_list[index]
except IndexError:
x = 'NO_AB...
Best way to create custom config options for my Rails app?
...th_indifferent_access" allows you to access the values in the hash using a string key or with an equivalent symbol key.
eg.
APP_CONFIG['audiocast_uri_format'] => 'http://blablalba/blabbitybla/yadda'
APP_CONFIG[:audiocast_uri_format] => 'http://blablalba/blabbitybla/yadda'
Purely a convenie...
What are the differences in die() and exit() in PHP?
... have two exit functions now! Let's make it so that they both
can take a string or integer as an argument and make them identical!"
The end result is that this didn't really make things any "easier",
just more confusing. C and Perl coders will continue to use exit() to
toss an integer exi...
How to deal with floating point number precision in JavaScript?
...
toPrecision returns a string instead of a number. This might not always be desirable.
– SStanley
Mar 13 '16 at 23:42
7
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Why would finding a type's initializer throw a NullReferenceException?
...45014f e81cab2758 call mscorlib_ni!System.Console.WriteLine(System.String, System.Object) (000007fe`e56cac70)
000007fe`8d450154 90 nop
000007fe`8d450155 4883c440 add rsp,40h
000007fe`8d450159 5b pop rbx
000007fe`8d45015a c3 ret
(My disa...
What is the reason not to use select *?
...ng all the columns now, it doesn't mean someone else isn't going to add an extra column to the table.
It also adds overhead to the plan execution caching since it has to fetch the meta data about the table to know what columns are in *.
...
How do I measure time elapsed in Java? [duplicate]
...will be used for the JAMon monitor, hence the call to thisJoinPoint.toShortString()):
public aspect MonitorAspect {
pointcut monitor() : execution(* *.ClassToMonitor.methodToMonitor(..));
Object arround() : monitor() {
Monitor monitor = MonitorFactory.start(thisJoinPoint.toShortStr...
Convert InputStream to byte array in Java
...lass DataInputStream is primary used to read primary types (Longs, Shorts, Chars...) from a stream, so we can see this usage as a misuse of the class.
– Olivier Faucheux
Apr 8 '15 at 11:51
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