大约有 40,000 项符合查询结果（耗时：0.0620秒） [XML]
How can I use “puts” to the console without a line break in ruby on rails?
...nd
Edit: I was just looking into the reasoning behind flush to answer @rubyprince's comment, and realised this could be cleaned up a little by simply using $stdout.sync = true...
$stdout.sync = true
100.times do
print "."
sleep 1
end
...
Where are static methods and static variables stored in Java?
...
@Nav not all parts of the heap are garbage collected by default and sometimes classes and thus static variables can't be collected since class loaders still have a reference on them. Additionally you shouldn't rely on the garbage collector to run since that's totally up to the ...
How do I check for a network connection?
... fine, however, there are certain cases when the standard method is fooled by virtual cards (virtual box, ...). It's also often desirable to discard some network interfaces based on their speed (serial ports, modems, ...).
Here is a piece of code that checks for these cases:
/// <summary>...
Renaming table in rails
...d::ConnectionAdapters::SchemaStatements isn't even a class (as pointed out by cam), which means that you can't even create an instance of it as per what I said above. And even if you used cam's example of class Foo; include ActiveRecord::ConnectionAdapters::SchemaStatements; def bar; rename_table; e...
How to obtain the start time and end time of a day?
...ut you can call toInstant if you need such objects which are always in UTC by definition.
Instant start = odtStart.toInstant() ;
Instant stop = odtStop.toInstant() ;
start.toString() = 2020-01-29T06:00:00Z
stop.toString() = 2020-01-30T06:00:00Z
Tip: You may be interested in adding the ThreeTen-...
Dropping Unique constraint from MySQL table
...swered Aug 15 '10 at 14:15
Mark ByersMark Byers
683k155155 gold badges14681468 silver badges13881388 bronze badges
...
Extracting the last n characters from a string in R
... Would it be more efficient to avoid calling nchar(x) twice by assigning it to a local variable?
– Dave Jarvis
Aug 12 '17 at 3:24
add a comment
...
What does T&& (double ampersand) mean in C++11?
...value references.
Here's a fantastic in-depth look at rvalue references by one of Microsoft's standard library developers.
CAUTION: the linked article on MSDN ("Rvalue References: C++0x Features in VC10, Part 2") is a very clear introduction to Rvalue references, but makes statements about Rv...
Declare a const array
...ight not be the most efficient solution.
But if you re-use the same array (by putting it in a private attribute for instance) it will again open up the possibility to change the contents of the array.
If you want to have an immutable array (or list) you could also use:
public static IReadOnlyList&...
Empty arrays seem to equal true and false at the same time
...
that's by convention, in JS if objects are coerced to Boolean, they are always coerced to TRUE. look at the "Boolean context" table at: javascript.info/tutorial/object-conversion
– Niki
Jun 7 '...