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Are Exceptions in C++ really slow

...nce costs due to different programming styles (correctness) Redundant call site if failure checking versus centralized try Caching issues (e.g. shorter code may fit in cache) The report has a different list of aspects to consider, but anyway the only practical way to obtain hard facts about the e...
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In MySQL, how to copy the content of one table to another table within the same database?

.... w3schools now has error reporting, if you find issues report it on their site to assist with accurate knowledge. – Nightwolf Sep 27 '17 at 10:50 add a comment ...
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Difference between Repository and Service Layer?

...ns. What this typically means for me in practice when building Asp.net MVC sites is that I have this structure [Controller] calls [Service(s)] who calls [repository(ies)] One principle I have found useful is to keep logic to a minimum in controllers and repositories. In controllers it is because...
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Default background color of SVG root element

...l version="1.0" encoding="UTF-8"?> <svg version="1.1" xmlns="http://www.w3.org/2000/svg"> <rect width="100%" height="100%" fill="red"/> </svg> This answer uses: https://stackoverflow.com/a/11293812/6747994 https://developer.mozilla.org/en-US/docs/Web/SVG/Tutorial/Fi...
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Why do we use Base64?

...ant to encode characters not valid for a URL in the URL itself: http://www.foo.com/hello my friend -> http://www.foo.com/hello%20my%20friend This is because we want to send a space over a system that will think the space is smelly. All we are doing is ensuring there is a 1-to-1 mapping bet...
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Why is there an “Authorization Code” flow in OAuth2 when “Implicit” flow works so well?

...nce: An attacker could get an access token from a user on a different website/app (let's say if he is the owner of the other website/app), log the token on their website, and then pass it as a URL param on your website therefore impersonating the user on your website. To avoid this you need to che...
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Is there a way to use PhantomJS in Python?

...common.keys import Keys driver = webdriver.PhantomJS() driver.get("http://www.python.org") assert "Python" in driver.title elem = driver.find_element_by_name("q") elem.clear() elem.send_keys("pycon") elem.send_keys(Keys.RETURN) assert "No results found." not in driver.page_source driver.close() ...
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window.location.href and window.open () methods in JavaScript

... For example: window.location.href example: window.location.href = 'http://www.google.com'; //Will take you to Google. window.open() example: window.open('http://www.google.com'); //This will open Google in a new window. Additional Information: window.open() can be passed additional parameters. S...
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Bootstrap Dropdown menu is not working

...eryone's problems helped. I copied the source straight from bootstrap's website, but I can't seem to get it to work on my machine. Anyone have any ideas? I have been staring at it for an hour and can't seem to figure out what the problem is. ...
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How can I use threading in Python?

...2 from multiprocessing.dummy import Pool as ThreadPool urls = [ 'http://www.python.org', 'http://www.python.org/about/', 'http://www.onlamp.com/pub/a/python/2003/04/17/metaclasses.html', 'http://www.python.org/doc/', 'http://www.python.org/download/', 'http://www.python.org/getit/', '...