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How do I print debug messages in the Google Chrome JavaScript Console?
... How long can one of these "outputs" be? Upvote by the way, this was really helpful
– nbura
Oct 13 '13 at 17:56
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How to loop through a plain JavaScript object with the objects as members?
How can I loop through all members in a JavaScript object including values that are objects.
24 Answers
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How to check if a string in Python is in ASCII?
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def is_ascii(s):
return all(ord(c) < 128 for c in s)
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How to rollback a specific migration?
...nt to go back.
For example:
rake db:rollback STEP=5
Will also rollback all the migration that happened later (4, 3, 2 and also 1).
To roll back all migrations back to (and including) a target migration, use: (This corrected command was added AFTER all the comments pointing out the error in the ...
Can I mix MySQL APIs in PHP?
...where. (Not sure whether plain old resources do that, but objects can actually take advantage of RAII to a not-insignificant degree.)
– cHao
Jul 5 '13 at 23:54
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How to run only one local test class on Gradle
...eSpecificFeature
gradle test --tests *SomeSpecificTest
gradle test --tests all.in.specific.package*
gradle test --tests *IntegTest
gradle test --tests *IntegTest*ui*
gradle test --tests *IntegTest.singleMethod
gradle someTestTask --tests *UiTest someOtherTestTask --tests *WebTest*ui
From version 1...
List comprehension vs map
...ing map() over list comprehension or vice versa? Is either of them generally more efficient or considered generally more pythonic than the other?
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How do I modify fields inside the new PostgreSQL JSON datatype?
...a":[null,{"b":[1,2,3]}]}'
For inserting into JSON array (while preserving all of the original values), the jsonb_insert() function can be used (in 9.6+; this function only, in this section):
SELECT jsonb_insert('{"a":[null,{"b":[1]}]}', '{a,1,b,0}', jsonb '2')
-- will yield jsonb '{"a":[null,{"b":[...
Floating point vs integer calculations on modern hardware
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From my experience, there are many, many variables to performance...especially between integer & floating point math. It varies strongly from processor to processor (even within the same family such as x86) because different processors have different "pipeline" lengths. Also, some operations ...
Javascript : natural sort of alphanumerical strings
...by the value of a certain key in an array of objects. It can also automatically identify and sort strings of: currencies, dates, currency, and a bunch of other things.
Surprisingly, it's also only 1.6kB when gzipped.
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