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rails - Devise - Handling - devise_error_messages

...hould help you get started. :) Another update The resource object is actually the model that is being used by devise (go figure). resource.class #=> User resource.errors.class #=> ActiveModel::Error It also appears to be defined in a higher scope (probably coming from the contro...
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Define make variable at rule execution time

...r are evaluated. In order to create the directory only when out.tar is actually fired, you need to move the directory creation down into the steps: out.tar : $(eval TMP := $(shell mktemp -d)) @echo hi $(TMP)/hi.txt tar -C $(TMP) cf $@ . rm -rf $(TMP) The eval function evaluates a...
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CGContextDrawImage draws image upside down when passed UIImage.CGImage

...answered Feb 6 '09 at 20:46 Kendall Helmstetter GelnerKendall Helmstetter Gelner 72.5k2626 gold badges123123 silver badges146146 bronze badges ...
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How to create a density plot in matplotlib?

...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 following code: import...
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browser sessionStorage. share between tabs?

...nStorage data from one tab to another. This code would need to exist on ALL tabs. It should execute before your other scripts. // transfers sessionStorage from one tab to another var sessionStorage_transfer = function(event) { if(!event) { event = window.event; } // ie suq if(!event.newValu...
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Add a property to a JavaScript object using a variable as the name?

...out modifying but it's referenced by other questions that are about dynamically creating objects and so I ended up here and happily benefited from this answer. – Oliver Lloyd Oct 29 '16 at 17:40 ...
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How do you remove duplicates from a list whilst preserving order?

...n seen or seen_add(x))] Why assign seen.add to seen_add instead of just calling seen.add? Python is a dynamic language, and resolving seen.add each iteration is more costly than resolving a local variable. seen.add could have changed between iterations, and the runtime isn't smart enough to rule t...
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How to run test methods in specific order in JUnit4?

...e is a clean way to do this with JUnit, to my knowledge JUnit assumes that all tests can be performed in an arbitrary order. From the FAQ: How do I use a test fixture? (...) The ordering of test-method invocations is not guaranteed, so testOneItemCollection() might be executed before testEm...
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Should IBOutlets be strong or weak under ARC?

...t practice from Apple is for IBOutlets to be strong unless weak is specifically needed to avoid a retain cycle. As Johannes mentioned above, this was commented on in the "Implementing UI Designs in Interface Builder" session from WWDC 2015 where an Apple Engineer said: And the last option I want...
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Creating a new empty branch for a new project

...branches departing from the original branch. But now we want to create a small new project to track some documentation. For that we would want to create a new empty branch to start storing our files, and I would want other users of the network to clone that branch. ...