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How do I kill background processes / jobs when my shell script exits?
...SIGTERM EXIT solution described in @tokland's answer is really nice, but latest Bash crashes with a segmantation fault when using it. That's because Bash, starting from v. 4.3, allows trap recursion, which becomes infinite in this case:
shell process recieves SIGINT or SIGTERM or EXIT;
the signal...
Handling optional parameters in javascript
...some suggestions:
http://www.planetpdf.com/developer/article.asp?ContentID=testing_for_object_types_in_ja
I am not certain if this is work or homework, so I don't want to give you the answer at the moment, but the typeof will help you determine it.
...
Split data frame string column into multiple columns
... it returns nothing. What could be the problem. my type is something like "test...score"
– user3841581
Mar 14 '16 at 8:15
2
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When splitting an empty string in Python, why does split() return an empty list while split('\n') re
...ible" either.
For the most part, Guido's API design choices have stood the test of time.
The current API is not without advantages. Consider strings such as:
ps_aux_header = "USER PID %CPU %MEM VSZ"
patient_header = "name,age,height,weight"
When asked to break these strings...
How do I return early from a rake task?
...
I used next approach suggested by Simone Carletti, since when testing rake task, abort, which in fact is just a wrapper for exit, is not the desired behavior.
Example:
task auto_invoice: :environment do
if Application.feature_disabled?(:auto_invoice)
$stderr.puts 'Feature is dis...
How does the extend() function work in jQuery?
...umentation isn't precise in explaining how extend works, so I ran a little test:
var a = {foo: 1, bar: 1};
var b = {foo: 2, baz: 2};
var c = {foo: 3};
var r = jQuery.extend(a,b,c);
console.log("A: Foo=" + a.foo + " Bar=" + a.bar + " Baz=" + a.baz);
console.log("B: Foo=" + b.foo + " Bar=" + b.bar + ...
Performance of static methods vs instance methods
... Static methods can't be mocked, If you do TDD or even just unit testing this will hurt your tests a lot.
– trampster
Mar 24 '17 at 10:33
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Add a tooltip to a div
...rth you can do it with white-space: pre-wrap; on current Chrome. I haven't tested other browsers though.
– Taugenichts
Mar 9 at 22:47
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How do I build a numpy array from a generator?
...slower (in my application) than using np.array(tuple(mygen)). Here are the test results: %timeit np.stack(permutations(range(10), 7)) 1 loop, best of 3: 1.9 s per loop compared to %timeit np.array(tuple(permutations(range(10), 7))) 1 loop, best of 3: 427 ms per loop
– Bill
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SQL DROP TABLE foreign key constraint
...rked wonders in my case since I needed to get rid of an useless table (for testing purposes) while maintaining the rest of the tables that had FK to it intact.
– Mauricio Quintana
Jul 24 '13 at 18:07
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