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STL or Qt containers?

... (see the std::string COW controversy). Some STL implementations are especially bad. provide hashes, which are not available unless you use TR1 The QTL has a different philosophy from the STL, which is well summarized by J. Blanchette: "Whereas STL's containers are optimized for raw speed, Qt's co...
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How to get the path of a running JAR file?

... One more note: While calling this function from the Jar, the name of the jar is appended at the end for me, therefore had to execute: path.substring(0, path.lastIndexOf("/") + 1); – will824 Oct 5 '11 at 15:29...
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Reset/remove CSS styles for element only

...ord-spacing : normal; z-index : auto; /* basic modern patch */ all: initial; all: unset; } /* basic modern patch */ #reset-this-root { all: initial; * { all: unset; } } Relevent github repo with a december 2017 more exaustive list Related Related from MDN Rel...
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How do I make a Git commit in the past?

... The advice you were given is flawed. Unconditionally setting GIT_AUTHOR_DATE in an --env-filter would rewrite the date of every commit. Also, it would be unusual to use git commit inside --index-filter. You are dealing with multiple, independent problems here. Specifying...
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What is a semaphore?

...s bouncers at a nightclub. There are a dedicated number of people that are allowed in the club at once. If the club is full no one is allowed to enter, but as soon as one person leaves another person might enter. It's simply a way to limit the number of consumers for a specific resource. For exampl...
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When do you use map vs flatMap in RxJava?

...r Exception problem, just throw it with a Non checked exception : RX will call the onError handler for you. Observable.from(jsonFile).map(new Func1<File, String>() { @Override public String call(File file) { try { return new Gson().toJson(new FileReader(file), Object.c...
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Get to UIViewController from UIView?

... All this bs about "you shouldn't do this" is just that. If a view wants to know about its view controller, that is up to the programmer to decide. period. – Daniel Kanaan Dec 7 '15 at ...
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Purpose of buildscript block in Gradle

...u can use everything that ships with Gradle out-of-the-box. If you additionally want to use third-party plugins, task classes, or other classes (in the build script!), you have to specify the corresponding dependencies in the buildScript block. ...
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One DbContext per web request… why?

...the DbContext caches data, it gets stale pretty soon. This will get you in all sorts of trouble when multiple users/applications work on that database simultaneously (which is very common of course). But I expect you already know that and just want to know why not to just inject a new instance (i.e....
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When should I use Struct vs. OpenStruct?

... @IvanKolmychek: Cool, actually I prefer the block approach. – tokland Mar 9 '16 at 18:21 ...