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Difference between doseq and for in Clojure
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answered Jan 18 '11 at 14:53
RayneRayne
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Is it safe to delete an object property while iterating over them?
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The ECMAScript 5.1 standard section 12.6.4 (on for-in loops) says:
Properties of the object being enumerated may be deleted during enumeration. If a property
that has not yet been visited during enumeration is deleted, then it will not be visited. If new prop...
Why should I implement ICloneable in c#?
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Rails how to run rake task
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answered Apr 12 '11 at 21:24
Andrew MarshallAndrew Marshall
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Converting an integer to a hexadecimal string in Ruby
... to_s a base other than 10:
10.to_s(16) #=> "a"
Note that in ruby 2.4 FixNum and BigNum were unified in the Integer class.
If you are using an older ruby check the documentation of FixNum#to_s and BigNum#to_s
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How to use mysql JOIN without ON condition?
...th three rows ('a', 'b', and 'c') and a table with four rows (say 1, 2, 3, 4) would have 12 rows.
In practice, if you want to do a cross join, then use cross join:
from A cross join B
is much better than:
from A, B
and:
from A join B -- with no on clause
The on clause is required for a rig...
How does numpy.histogram() work?
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edited Feb 4 '12 at 15:31
answered Feb 4 '12 at 15:09
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Django - filtering on foreign key properties
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FragsworthFragsworth
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How to check if a database exists in SQL Server?
... SteveC
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answered Mar 24 '09 at 20:05
eKek0eKek0
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