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Why is creating a Thread said to be expensive?

...0.38 us Time for a task to complete in the same thread 0.08 us This is a test for a trivial task which exposes the overhead of each threading option. (This test task is the sort of task that is actually best performed in the current thread.) final BlockingQueue<Integer> queue = new LinkedBl...
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How to create a CPU spike with a bash command

...irtual cores). You'll also want to stress the virtual ones for a full load test. – Mast May 21 '15 at 11:53 6 ...
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Manipulate a url string by adding GET parameters

...?category=1'; } More advanced $url = 'http://example.com/search?keyword=test&category=1&tags[]=fun&tags[]=great'; $url_parts = parse_url($url); // If URL doesn't have a query string. if (isset($url_parts['query'])) { // Avoid 'Undefined index: query' parse_str($url_parts['query']...
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Selenium c# Webdriver: Wait Until Element is Present

... explicit waits. That can cause some unpredictable behavior leading to bad test results. Generally speaking, I would recommend using explicit waits over implicit waits. – mrfreester Dec 22 '16 at 19:26 ...
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How to display PDF file in HTML?

...like Google Drive) and use its URL in a iframe or <object data="data/test.pdf" type="application/pdf" width="300" height="200"> <a href="data/test.pdf">test.pdf</a> </object> share | ...
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How to check if a value exists in an array in Ruby

...n for an array must do some sort of looping internally; there is no way to test for membership of an array without looping. If you don't want to do any looping even internally, you need to use a different data structure, such as a perfect hash table with fixed sized keys. Given that there's no way ...
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Is there a better way of writing v = (v == 0 ? 1 : 0); [closed]

... @Guffa's answer as number-based). I like how you've taken the unnecessary test (v==0) and brackets out, stripping it down to the absolute minimum character count. Thank you. – Ollie Glass Aug 2 '11 at 12:06 ...
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How to check Oracle database for long running queries

... It;s valid. I tested it. What tool are you using to query? It might be getting confused with the # sign. Try changing the beginning and the end like this: "select * from ... order by sid,q.piece" – Carlos A. Ibarra ...
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How to find out how many lines of code there are in an Xcode project?

... it appears the .m and .mm tests are missing an * (edited: seems SO is not rendering those without a preceding slash) The above was not working for me until I added them as such: find . "(" -name "*.m" -or -name "*.mm" -or -name "*.cpp" ")" -print0 | x...
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Is 1.0 a valid output from std::generate_canonical?

...ation with libc++ confirms this expectation. template<class F> void test(long long N, const F& get_a_float) { int count = 0; for (long long i = 0; i < N; ++i) { float f = get_a_float(); if (f == 1.0f) { ++count; } } printf("Expected %...