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Implications of foldr vs. foldl (or foldl')
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The recursion for foldr f x ys where ys = [y1,y2,...,yk] looks like
f y1 (f y2 (... (f yk x) ...))
whereas the recursion for foldl f x ys looks like
f (... (f (f x y1) y2) ...) yk
An important difference here is that if the result of f x y can be computed using only...
Calling clojure from java
...ln (str "(binomial 5 3): " (binomial 5 3)))
(println (str "(binomial 10042 111): " (binomial 10042 111)))
)
If you run it, you should see something like:
(binomial 5 3): 10
(binomial 10042 111): 49068389575068144946633777...
And here's a Java program that calls the -binomial function in the t...
How to print a percentage value in python?
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289
format supports a percentage floating point precision type:
>>> print "{0:.0%}".form...
How to concatenate multiple lines of output to one line?
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246
Use tr '\n' ' ' to translate all newline characters to spaces:
$ grep pattern file | tr '\n' ...
Laravel stylesheets and javascript don't load for non-base routes
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someOne
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answered May 15 '13 at 12:58
gangan
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Check if directory mounted with bash
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answered Feb 23 '12 at 23:12
Christopher NeylanChristopher Neylan
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How to convert a clojure keyword into a string?
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kotarakkotarak
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What is the mouse down selector in CSS?
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answered May 23 '13 at 13:33
jansmolders86jansmolders86
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How do I manipulate a variable whose name conflicts with PDB commands?
...print('foo')
(Pdb) !n = 77
(Pdb) !n
77
(Pdb) n
foo
> /home/user/test.py(2)<module>()
-> print('bar')
(Pdb)
The docs say:
! statement
Execute the (one-line) statement in the context of the current stack frame. The exclamation point can be omitted unless the first word of the st...
How to change the foreign key referential action? (behavior)
...ocess:
Suppose, a table1 has a foreign key with column name fk_table2_id, with constraint name fk_name and table2 is referred table with key t2 (something like below in my diagram).
table1 [ fk_table2_id ] --> table2 [t2]
First step, DROP old CONSTRAINT: (reference)
ALTER TABLE ...