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Draw on HTML5 Canvas using a mouse

... I changed canvas.offsetLeft; and canvas.offsetTop; with canvas.getBoundingClientRect().left; and canvas.getBoundingClientRect().top; respectively to fix the scrolling problem. – KWILLIAMS Nov 15 '17 at 19:27 ...
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Javascript equivalent of Python's zip function

...0col0","row1col0"], ["row0col1","row1col1"], ["row0col2","row1col2"]] (and FizzyTea points out that ES6 has variadic argument syntax, so the following function definition will act like python, but see below for disclaimer... this will not be its own inverse so zip(zip(x)) will not equal x; thoug...
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Count with IF condition in MySQL query

I have two tables, one is for news and the other one is for comments and I want to get the count of the comments whose status has been set as approved. ...
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Checking out Git tag leads to “detached HEAD state”

I'm developing a deployment script for my git project and I just started using tags. I've added a new tag called v2.0 : 2 ...
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Why does running the Flask dev server run itself twice?

I'm using Flask for developing a website and while in development I run flask using the following file: 6 Answers ...
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How to create a density plot in matplotlib?

...hat you generated with R. This is because gaussian_kde tries to infer the bandwidth automatically. You can play with the bandwidth in a way by changing the function covariance_factor of the gaussian_kde class. First, here is what you get without changing that function: However, if I use the follo...
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tmux: How to join two tmux windows into one, as panes?

I have two tmux windows, with a single pane in each, and I would like to join these two panes together into a single window as a horizontal split panes. How could I do that? ...
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client secret in OAuth 2.0

...e google drive api, I have to play with the authentication using OAuth2.0. And I got a few question about this. 3 Answers ...
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How do you do a limit query in JPQL or HQL?

... HQL parser would replace the bits of the query that it recognised as HQL, and leave the rest as it was, so you could sneak in some native SQL. Hibernate 3, however, has a proper AST HQL Parser, and it's a lot less forgiving. I think Query.setMaxResults() really is your only option. ...
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How to navigate through a vector using iterators? (C++)

... strings instead of the [] operator or the "at" method. From what I understand, iterators can be used to navigate through containers, but I've never used iterators before, and what I'm reading is confusing. ...