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How to access component methods from “outside” in ReactJS?

... class Parent extends React.Class { constructor(props) { this._child = React.createRef(); } componentDidMount() { console.log(this._child.current.someMethod()); // Prints 'bar' } render() { return ( <div> <Child ref=...
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Disable submit button when form invalid with AngularJS

... +1 Coincidentally, I was just reading this great post of yours: benlesh.com/2012/11/angular-js-form-validation.html – Ben May 15 '14 at 17:48 ...
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Where in an Eclipse workspace is the list of projects stored?

...e.resources/.projects/ Your project can exist outside the workspace, but all Eclipse-specific metadata are stored in that org.eclipse.core.resources\.projects directory share | improve this answer...
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C++ convert hex string to signed integer

...>> x; // output it as a signed type std::cout << static_cast<int>(x) << std::endl; } In the new C++11 standard, there are a few new utility functions which you can make use of! specifically, there is a family of "string to number" functions (http://en.cppreference.c...
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What's the scope of a variable initialized in an if statement?

...ked only at runtime -- that is, when you get to the print x statement. If __name__ didn't equal "__main__" then you would get an exception: NameError: name 'x' is not defined. share | improve this ...
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MySQL query to get column names?

I'd like to get all of a mysql table's col names into an array in php? 21 Answers 21 ...
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✔ Checkmark selected row in UITableViewCell

... Update Swift 4 func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) { tableView.cellForRow(at: indexPath)?.accessoryType = .checkmark } func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPat...
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How to cherry pick a range of commits and merge into another branch?

...ue". or skip this patch, and instead run "git rebase --skip" or cancel the all thing with a "git rebase --abort" (and put back the integration branch on the tmp branch) After that rebase --onto, integration will be back at the last commit of the integration branch (that is "tmp" branch + all the re...
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Android emulator and virtualbox cannot run at same time

... Thanks @MichaelHampton. I installed vagrant-libvert and it worked! – jchook Jan 13 '19 at 21:42 add a comment  |...
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What differences, if any, between C++03 and C++11 can be detected at run-time?

...onstrate breaking changes. The following is a tweaked testcase, which initially was used to demonstrate such a change, but now is used to test for C++0x or C++03. struct X { }; struct Y { X x1, x2; }; struct A { static X B(int); }; typedef A B; struct C : A { using ::B::B; // (inheriting const...