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Converting Dictionary to List? [duplicate]
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156
Your problem is that you have key and value in quotes making them strings, i.e. you're setting ...
How can Perl's print add a newline by default?
... say function that automatically appends \n.
You can also use say in Perl 5.10 or 5.12 if you add
use feature qw(say);
to the beginning of your program. Or you can use Modern::Perl to get this and other features.
See perldoc feature for more details.
...
Under what circumstances is an SqlConnection automatically enlisted in an ambient TransactionScope T
...will not be automatically enlisted in a newly created transaction scope.
Q5. No. Unless you open a connection in the transaction scope, or enlist an existing connection in the scope, there basically is NO TRANSACTION. Your connection must be automatically or manually enlisted in the transaction sc...
Accessing members of items in a JSONArray with Java
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edited Nov 9 '18 at 23:53
idewz
544 bronze badges
answered Oct 14 '09 at 20:32
...
Django dynamic model fields
...for faster queries.
– GDorn
Mar 1 '15 at 6:10
1
Updated today to note Django's adoption of HStore...
Apply a function to every row of a matrix or a data frame
..., byrow=TRUE)
R> M
[,1] [,2]
[1,] 1 2
[2,] 3 4
[3,] 5 6
R> apply(M, 1, function(x) 2*x[1]+x[2])
[1] 4 10 16
R>
This takes a matrix and applies a (silly) function to each row. You pass extra arguments to the function as fourth, fifth, ... arguments to apply().
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Scala: Abstract types vs generics
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257
You have a good point of view on this issue here:
The Purpose of Scala's Type System
A Conve...
Remove all the elements that occur in one list from another
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526
Python has a language feature called List Comprehensions that is perfectly suited to making th...
What is Ember RunLoop and how does it work?
...: https://machty.s3.amazonaws.com/ember-run-loop-visual/index.html
Update 5/9/2013: all the basic concepts below are still up to date, but as of this commit, the Ember Run Loop implementation has been split off into a separate library called backburner.js, with some very minor API differences.
Fir...
Python csv string to array
... StringIO
import csv
scsv = """text,with,Polish,non-Latin,letters
1,2,3,4,5,6
a,b,c,d,e,f
gęś,zółty,wąż,idzie,wąską,dróżką,
"""
f = StringIO(scsv)
reader = csv.reader(f, delimiter=',')
for row in reader:
print('\t'.join(row))
simpler version with split() on newlines:
reader = csv...