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How to redirect to a 404 in Rails?
...gly conditional statements.
As a bonus, it's also super easy to handle in tests. For example, in an rspec integration test:
# RSpec 1
lambda {
visit '/something/you/want/to/404'
}.should raise_error(ActionController::RoutingError)
# RSpec 2+
expect {
get '/something/you/want/to/404'
}.to r...
How do I test if a string is empty in Objective-C?
How do I test if an NSString is empty in Objective-C?
30 Answers
30
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Check if a Bash array contains a value
In Bash, what is the simplest way to test if an array contains a certain value?
35 Answers
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How can I prevent the backspace key from navigating back?
...
This code solves the problem, at least in IE and Firefox (haven't tested any other, but I give it a reasonable chance of working if the problem even exists in other browsers).
// Prevent the backspace key from navigating back.
$(document).unbind('keydown').bind('keydown', function (event) ...
The forked VM terminated without saying properly goodbye. VM crash or System.exit called
...
Don't forget error stream too: mvn clean test 2>err.txt 1>out.txt or mvn clean test > out.txt 2>&1 or mvn clean test 2>&1 | tee out.txt While redirecting, you can watch output in other console with less +F out.txt
– radzi...
jQuery how to find an element based on a data-attribute value?
...;b>').data('x', 1).filterByData('x').length // output: 1
// test data
function extractData() {
log('data-prop=val ...... ' + $('div').filterByData('prop', 'val').length);
log('data-prop .......... ' + $('div').filterByData('prop').length);
log('data-random ........ ' + $('di...
Python Progress Bar
...he best points of all the above, and made it into a function, along with a test cases.
To use it, just copy the lines under "def update_progress(progress)" but not the test script. Don't forget to import sys. Call this whenever you need to display or update the progress bar.
This works by directly...
Retrieve only the queried element in an object array in MongoDB collection
... returned document to contain only the first matched shapes element:
db.test.find(
{"shapes.color": "red"},
{_id: 0, shapes: {$elemMatch: {color: "red"}}});
Returns:
{"shapes" : [{"shape": "circle", "color": "red"}]}
In 2.2 you can also do this using the $ projection operator, where...
Measuring the distance between two coordinates in PHP
...ons possible, this version implements the formula in Wikipedia and is well tested. The $angle means the angle in the middle of the world in radians, so one can multiplicate it with the earth radius. I can also provide an example of the more complex Vincenty formula if someone is interested.
...
Rename a dictionary key
...or python 3.5, I think dict.pop is workable for an OrderedDict based on my test.
– Daniel
Dec 5 '17 at 13:30
6
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