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html5 - canvas element - Multiple layers

...ever you want with them and at the end just render their content in proper order at destination canvas using drawImage on context. Example: /* using canvas from DOM */ var domCanvas = document.getElementById('some-canvas'); var domContext = domCanvas.getContext('2d'); domContext.fillRect(50,50,150...
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How to use the TextWatcher class in Android?

...er interface has 3 callbacks methods which are all called in the following order when a change occurred to the text: beforeTextChanged(CharSequence s, int start, int count, int after) Called before the changes have been applied to the text. The s parameter is the text before any change is applied....
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How to use Git?

... your questions directly rather than pointing you at documentation: 1) In order to keep it up to date, do a git pull and that will pull down the latest changes in the repository, on the branch that you're currently using (which is generally master) 2) I don't think there's something (widely availa...
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How to terminate a python subprocess launched with shell=True

...rapper for something else, do call the final binary there with exec too in order to have only one subprocess. – Nicolinux Aug 4 '16 at 17:51 1 ...
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Eclipse menus don't show up after upgrading to Ubuntu 13.10

... that the fact that it is installed there forces me to run sudo eclipse in order to get the menus, or else it doesn't work. However, when I just copy-pasted your file content without modifying it, the menus work without sudo priviliges, even though I of course have no directory name /home/USERNAME.....
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How to check if all of the following items are in a list?

...'s not really that confusing if you recall the inclusion defines a partial order on any set of sets. It's actually slightly confusing that <= has the meaning it does for sequences: one might expect it to mean 'is a subsequence` of rather than lexicographical ordering. – aaro...
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SQL Server database backup restore on lower version

... structure and data using SSMS but you need to take into consideration the order of execution. By default object scripts are not ordered correctly and you’ll have to take care of the dependencies. This may be an issue if database is big and has a lot of objects. Import and export wizard: This is ...
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form_for with nested resources

...POST /comments post :create, :comment => {:article_id=>42, ...} In order to test the route that they may prefer, they need to do it this way: # POST /articles/42/comments post :create, :article_id => 42, :comment => {...} I learned this because my unit-tests started failing when I s...
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Should I use Java's String.format() if performance is important?

... Another poorly implemented micro-benchmark. How do both methods scale by orders of magnitude. How about using, 100, 1000, 10000, 1000000, operations. If you only run one test, on one order of magnitude, on a application that isn't running on an isolated core; there's no way to tell how much of the...
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Fast permutation -> number -> permutation mapping algorithms

...be very small. This can "easily" be reduced to O(nlogn) though, through an order statistics tree (pine.cs.yale.edu/pinewiki/OrderStatisticsTree), i.e. a red-black tree which initially will contains the values 0, 1, 2, ..., n-1, and each node contains the number of descendants below it. With this, on...