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How to Copy Contents of One Canvas to Another Canvas Locally
... are building a website that uses lots of image/canvas operations.
// select canvas elements
var sourceCanvas = document.getElementById("some-unique-id");
var destCanvas = document.getElementsByClassName("some-class-selector")[0];
//copy canvas by DataUrl
var sourceImageData = ...
Adding Permissions in AndroidManifest.xml in Android Studio?
...s you get a list of permissions and also hint to move caret up and down to select the same.
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Rails Model, View, Controller, and Helper: what goes where?
...rols the view but not the logic. The Controller should concern itself with selecting the proper view and delegate more complex stuff to the domain model (Model) or the business layer.
Domain Driven Design has a concept of Services which is a place you stick logic which needs to orchestrate a number...
Does Python have a ternary conditional operator?
... This one emphasizes the primary intent of the ternary operator: value selection. It also shows that more than one ternary can be chained together into a single expression.
– Roy Tinker
Oct 4 '10 at 21:14
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How Can I Set the Default Value of a Timestamp Column to the Current Timestamp with Laravel Migratio
...T_TIMESTAMP');
It doesn't remove the 'default 0' that seems to come with selecting timestamp and it just appends the custom default. But we kind of need it without the quotes. Not everything that manipulates a DB is coming from Laravel4. That's his point. He wants custom defaults on certain co...
Renaming a virtualenv folder without breaking it
...ate_this.py instead of using the
location of the Python interpreter to
select the environment.
Note: you must run this after you've
installed any packages into the
environment. If you make an
environment relocatable, then install
a new package, you must run virtualenv
--relocatabl...
jQuery .live() vs .on() method for adding a click event after loading dynamic html
...er on a parent object (that does not get loaded dynamically) and give it a selector that matches your dynamic object like this:
$('#parent').on("click", "#child", function() {});
The event handler will be attached to the #parent object and anytime a click event bubbles up to it that originated on...
How to linebreak an svg text within javascript?
... to delete the old tspans first before appended new ones, like this: focus.selectAll("tspan").remove();
– Darren Parker
Dec 14 '15 at 19:38
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Neo4j - Cypher vs Gremlin query language
...tp://docs.sqlalchemy.org/en/rel_0_7/core/tutorial.html#intro-to-generative-selects to know what I mean.)
This seems to be a bit more tricky with Cypher.
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Edit and Continue: “Changes are not allowed when…”
...o edit it.
(vs2017) Go to Tools > Options > Debugging and uncheck (deselect) 'Edit and Continue'. This is actually the opposite of the 'conventional' advice (see some other points in this post). It does not allow you to actually make changes in your running program (i.e. it does not hot-swap t...