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How to remove array element in mongodb?
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Is there call back with this?
– Oliver Dixon
Sep 1 '15 at 17:34
1
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Why is the minimalist, example Haskell quicksort not a “true” quicksort?
...t;- cond
when b $ foo >> while cond foo
And here, a dumb test to see if it works.
main = do
a <- (newListArray (0,9) [10,9..1]) :: IO (IOUArray Int Int)
printArr a
putStrLn "Sorting..."
qsort a 0 9
putStrLn "Sorted."
printArr a
where printArr a = mapM_...
Integrating MySQL with Python in Windows
...rrently, I would recommend using PyMySQL. It's pure python, so it supports all OSes equally, it's almost a drop-in replacement for mysqldb, and it also works with python 3. The best way to install it is using pip. You can install it from here (more instructions here), and then run:
pip install pymy...
Converting string from snake_case to CamelCase in Ruby
...equire "active_support/core_ext/string" is suffice, providing Rails is installed already.
– Masa Sakano
Jun 23 '18 at 2:03
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Django-Admin: CharField as TextArea
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Starting from Django 1.7 you need to add also fields = '__all__' under class Meta:.
– skoll
May 4 '16 at 11:43
2
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Select unique or distinct values from a list in UNIX shell script
...n the following input:
class
jar
jar
jar
bin
bin
java
uniq will output all lines exactly once:
class
jar
bin
java
uniq -d will output all lines that appear more than once, and it will print them once:
jar
bin
uniq -u will output all lines that appear exactly once, and it will print them ...
How to reshape data from long to wide format
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The reshape comments and similar argument names aren't all that helpful. However, I have found that for long to wide, you need to provide data = your data.frame, idvar = the variable that identifies your groups, v.names = the variables that will become multiple columns in wide f...
Drawing a connecting line between two elements [closed]
...ilding applications and integrations for popular libraries, and is commercially licensed.
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How to get the full path of running process?
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According to my measurements, calling process.Modules[0] is 50 times slower than calling process.MainModule.
– Luca Cremonesi
Oct 23 '14 at 16:14
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How can I use mySQL replace() to replace strings in multiple records?
...g with sample string:
UPDATE some_table SET some_field = REPLACE("this is test string", 'test', 'sample')
EG with Column/Field Name:
UPDATE some_table SET some_field = REPLACE(columnName, 'test', 'sample')
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