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Python 3: UnboundLocalError: local variable referenced before assignment [duplicate]
...hing similar but I'm not sure what to google.
– teter123f
Aug 15 at 19:36
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How to check if string input is a number? [duplicate]
...numeric() will do the job (Documentation for python3.x):
>>>a = '123'
>>>a.isnumeric()
True
But remember:
>>>a = '-1'
>>>a.isnumeric()
False
isnumeric() returns True if all characters in the string are numeric characters, and there is at least one character....
How do I start Mongo DB from Windows?
...via command line with authentication.
mongo --username abcd --password abc123 --host server_ip_or_dns --port 27017
That's it !!!
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Convert from ASCII string encoded in Hex to plain ASCII?
...t;>> 'abcd'[0::2] # alternates
'ac'
>>> zip('abc', '123') # pair up
[('a', '1'), ('b', '2'), ('c', '3')]
>>> chr(32) # ascii to character
' '
will look at binascii now...
>>> print binascii.unhexlify('7061756c')
paul
cool (and i h...
Add leading zeroes to number in Java? [duplicate]
... If Java 1.4 and below, try new DecimalFormat("00000").format(123); as shown here javadevnotes.com/java-integer-to-string-with-leading-zeros
– JavaDev
Mar 5 '15 at 3:37
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EC2 Instance Cloning
...
123
The easier way is through the web management console:
go to the instance
select the instanc...
“Invalid JSON primitive” in Ajax processing
...nd the data as query string parameters form like:
RecordId=456&UserId=123
unless the processData option is set to false, in which case it will sent as object to the server.
contentType option is for the server that in which format client has sent the data.
dataType option is for the server...
About Android image and asset sizes
... in a subfolder e.g.:
/
.. createAndroidImages.sh
.. originalImages/
....a123.png
....b456.png
Run the shell script in terminal: sh createAndroidImages.sh
To copy the created images directly to your Android Studio Project:
cp -R drawable-* ~/AndroidStudioProjects/ESCRating/app/src/main/res/
Y...
Which selector do I need to select an option by its text?
...
Doesn't this also grab an option with 123abcdef?
– Teepeemm
Mar 6 '18 at 14:26
@T...
Remove duplicated rows
...for larger data sets
library(microbenchmark)
library(data.table)
set.seed(123)
DF <- as.data.frame(matrix(sample(1e8, 1e5, replace = TRUE), ncol = 10))
DT <- copy(DF)
setDT(DT)
microbenchmark(unique(DF), unique(DT))
# Unit: microseconds
# expr min lq mean median ...