大约有 40,000 项符合查询结果(耗时:0.0487秒) [XML]

https://stackoverflow.com/ques... 

How do I check if a string contains a specific word?

...g_match 1.5 seconds to finish and for strpos it took 0.5 seconds. Edit: In order to search any part of the string, not just word by word, I would recommend using a regular expression like $a = 'How are you?'; $search = 'are y'; if(preg_match("/{$search}/i", $a)) { echo 'true'; } The i at the en...
https://stackoverflow.com/ques... 

Determine Whether Two Date Ranges Overlap

...ndDates. Deriving this from above: If start and end dates can be out of order, i.e., if it is possible that startA > endA or startB > endB, then you also have to check that they are in order, so that means you have to add two additional validity rules: (StartA <= EndB) and (StartB <= ...
https://stackoverflow.com/ques... 

What is the difference between concurrency, parallelism and asynchronous methods?

...lit up into units (units essentially being threads) that can be ran in any order and have a determinate outcome. Parallel means these units/threads are being ran literally at the same time on multiple processors. – user7917402 Apr 26 '17 at 9:23 ...
https://stackoverflow.com/ques... 

Make a div fill up the remaining width

... is there a way to do this without changing the order of the items? i.e. left-div, middle-div, right-div. This is important if you want to do different things on different screen sizes. – Eliezer Steinbock Mar 30 '16 at 22:15 ...
https://stackoverflow.com/ques... 

What is the difference between JOIN and JOIN FETCH when using JPA and Hibernate

...Worth mention that fetch has to be used if (using our example) you want to order by some Department attribute. Otherwise, (valid at least for PG) you might get ERROR: for SELECT DISTINCT, ORDER BY expressions must appear in select list – long Apr 21 at 14:08 ...
https://stackoverflow.com/ques... 

How can I reliably determine the type of a variable that is declared using var at design time?

...art by transforming it syntactically to var z = y.Where(foo=>foo. In order to work out the type of foo we must first know the type of y. So at this point we ask the type determiner "what is the type of y"? It then starts up an expression evaluator which parses x.ToCharArray() and asks "what's...
https://stackoverflow.com/ques... 

Why malloc+memset is slower than calloc?

...The performance difference here is much larger (I measured more than three orders of magnitude on my system between malloc()+memset() and calloc()). Party trick Instead of looping 10 times, write a program that allocates memory until malloc() or calloc() returns NULL. What happens if you add mems...
https://stackoverflow.com/ques... 

What are the benefits of functional programming? [closed]

...ble over there?" and "did I get these procedures to execute in the correct order?". Seriously, you get these benefits (from understand the FP paradigm) in Python, C#, C++, Java, you name it. – Jared Updike Nov 9 '09 at 19:35 ...
https://stackoverflow.com/ques... 

Deleting lines from one file which are in another file

...print }' exclude-these.txt from-this.txt The output will be in the same order as the "from-this.txt" file. The tolower() function makes it case-insensitive, if you need that. The algorithmic complexity will probably be O(n) (exclude-these.txt size) + O(n) (from-this.txt size) ...
https://stackoverflow.com/ques... 

How to get RelativeLayout working with merge and include?

...uggests wrapping the includes in a unique parent container, but does so in order to assist addressing & scoping identically named Views within Justin's includes Each would have to have a unique parent container, and you would call findViewById() on that container (ViewGroup) rather th...