大约有 48,000 项符合查询结果（耗时：0.0758秒） [XML]
Learning Regular Expressions [closed]
... to what you might think of as cautious, add an extra ? to the quantifier. Now you understand how \((.+?)\), the example from your question works. It matches the sequence of a literal left-parenthesis, followed by one or more characters, and terminated by a right-parenthesis.
If your input is '(123...
How to check if a Ruby object is a Boolean
...String".boolean?
=> false
>> 1.boolean?
=> false
>> Time.now.boolean?
=> false
>> nil.boolean?
=> false
>> true.boolean?
=> true
>> false.boolean?
=> true
>> (1 ==1).boolean?
=> true
>> (1 ==2).boolean?
=> true
...
Apache Kafka vs Apache Storm
...ions on real time data in parallel.
The common flow of these tools (as I know it) goes as follows:
real-time-system --> Kafka --> Storm --> NoSql --> BI(optional)
So you have your real time app handling high volume data, sends it to Kafka queue. Storm pulls the data from kafka and app...
Should I pass an std::function by const-reference?
...id> run_in_ui_thread( std::function<void()> const& ) // (B)
Now, we are likely to use these as follows:
run_in_ui_thread( [=]{
// code goes here
} ).wait();
which will create an anonymous closure (a lambda), construct a std::function out of it, pass it to the run_in_ui_thread fun...
MySQL ON vs USING?
...Id,city,hasAirport) values (6,"Monaco",false);
-- Gah. Left outer join is now effectively an inner join
-- because of the where predicate
select *
from country left join city using (countryId)
where hasAirport
;
-- Hooray! I can see Monaco again thanks to
-- moving my predicate into the ON
sele...
How do I automatically scroll to the bottom of a multiline text box?
...ing myself trying to make it with tb.Text += .... and WndProc and marshals Now I feel stupid :D
– Saeid Yazdani
Nov 22 '13 at 23:35
...
sed one-liner to convert all uppercase to lowercase?
...oned, BSD sed doesn't support it). Try reading the top line of man sed to know which version you're using.
– Ryder
Dec 8 '17 at 10:48
...
Chaining multiple MapReduce jobs in Hadoop
...rs for the job.
I think that the above method might however be the way the now older mapred API did it, but it should still work. There will be a similar method in the new mapreduce API but i'm not sure what it is.
As far as removing intermediate data after a job has finished you can do this in your...
How to concatenate twice with the C preprocessor and expand a macro as in “arg ## _ ## MACRO”?
...then substituted into the replacement string:
EVALUATOR(mine, VARIABLE)
Now the macro EVALUATOR is discovered, and the arguments are isolated as 'mine' and 'VARIABLE'; the latter is then fully expanded to '3', and substituted into the replacement string:
PASTER(mine, 3)
The operation of this i...
CocoaPods Errors on Project Build
... it.
If you go to the target's Build Settings and filter on All, you will now see the PODS_ROOT entry with no errors:
It should now build with no errors.
Note: Even Cocoa Pods' official AFNetworking iOS Example has this problem, which leads me to believe that it is a bug with Xcode.
An alte...