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In log4j, does checking isDebugEnabled before logging improve performance?

...ava 8, you don't have to use isDebugEnabled() to improve the performance. https://logging.apache.org/log4j/2.0/manual/api.html#Java_8_lambda_support_for_lazy_logging import java.util.logging.Logger; ... Logger.getLogger("hello").info(() -> "Hello " + name); ...
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“unmappable character for encoding” warning in Java

... everytime a JVM is started, it will pick up this information. Source: http://whatiscomingtomyhead.wordpress.com/2012/01/02/get-rid-of-unmappable-character-for-encoding-cp1252-once-and-for-all/ share | ...
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How can I shift-select multiple checkboxes like GMail?

...; } lastChecked = this; }); }); <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <html> <head> </head> <body> <input type="checkbox" id="id_chk1" class="chkbox" value="1" />Check 1&l...
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How do I prevent a parent's onclick event from firing when a child anchor is clicked?

...f time while developing with ReactJS Browser support could be found here: http://caniuse.com/#feat=pointer-events share | improve this answer | follow | ...
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JavaScript: What are .extend and .prototype used for?

...party libraries to make it easy to create objects from other objects. See http://api.jquery.com/jQuery.extend/ or http://www.prototypejs.org/api/object/extend for some examples. .prototype refers to the "template" (if you want to call it that) of an object, so by adding methods to an object's prot...
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How to throw std::exceptions with variable messages?

...std::exception & ex) { You can find some inspiration on this topic in https://books.google.ru/books?id=6tjfmnKhT24C Chapter 9 Also, you can provide a custom message too, but be careful - it is not safe to compose a message with either std::string or std::stringstream or any other way which can ...
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Git - Difference Between 'assume-unchanged' and 'skip-worktree'

...ry of the ramifications of this difference and the typical use cases here: http://fallengamer.livejournal.com/93321.html . From that article: --assume-unchanged assumes that a developer shouldn’t change a file. This flag is meant for improving performance for not-changing folders like SDKs. --...
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Posting a File and Associated Data to a RESTful WebService preferably as JSON

... of MultiPart/Form-Data is derived from one of those applications... From http://www.faqs.org/rfcs/rfc2388.html: "multipart/form-data" contains a series of parts. Each part is expected to contain a content-disposition header [RFC 2183] where the disposition type is "form-data", and where the dispo...
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How can I perform a str_replace in JavaScript, replacing text in JavaScript?

... _ using regex. If you need to use regex, then i recommend testing it with https://regex101.com/ city_name.replace(/ /gi,'_'); // Returns: Some_text_with_spaces Replaces all spaces with _ without regex. Functional way. city_name.split(' ').join('_'); // Returns: Some_text_with_spaces ...
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Why is a div with “display: table-cell;” not affected by margin?

...eUploader: { brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...