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What are “connecting characters” in Java identifiers?
...king isJavaIdentifierPart instead of isJavaIdentifierStart. It's much more fun!
– Aleksandr Dubinsky
Jun 2 '16 at 19:21
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How get integer value from a enum in Rails?
...lass to access the integer value for that instance:
my_model = Model.find(123)
Model.sale_infos[my_model.sale_info] # Returns the integer value
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How do I create ColorStateList programmatically?
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Also, see my answer below for a Kotlin helper function.
– arekolek
Sep 26 '19 at 16:48
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What does [object Object] mean?
...answered Aug 21 '14 at 6:25
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Batch file: Find if substring is in string (not in a file)
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When this is run in CMD.EXE, we get:
C:\DemoDev>y pqrs "abc def pqr 123"
got one - pattern not found
C:\DemoDev>y pqr "abc def pqr 123"
got zero - found pattern
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Test if characters are in a string
...# Correct
> grepl("1+2", "1+2", fixed=TRUE)
[1] TRUE
> grepl("1+2", "123+456", fixed=TRUE)
[1] FALSE
# Incorrect
> grepl("1+2", "1+2")
[1] FALSE
> grepl("1+2", "123+456")
[1] TRUE
Interpretation
grep is named after the linux executable, which is itself an acronym of "Global Regular...
Regex Email validation
...ht, fail to catch at least two invalid formats: "Abc.@example.com" , "Abc..123@example.com"
– sean717
Aug 22 '12 at 5:22
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Calculating a directory's size using Python?
...p)
return total_size
print(get_size(), 'bytes')
And a oneliner for fun using os.listdir (Does not include sub-directories):
import os
sum(os.path.getsize(f) for f in os.listdir('.') if os.path.isfile(f))
Reference:
os.path.getsize - Gives the size in bytes
os.walk
os.path.islink
Updat...
grant remote access of MySQL database from any IP address
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TO 'user'@'%'
% is a wildcard - you can also do '%.domain.com' or '%.123.123.123' and things like that if you need.
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How do I compare version numbers in Python?
...3.a4"), version.Version)
True
>>> isinstance(version.parse("1.3.xy123"), version.LegacyVersion)
True
>>> version.Version("1.3.xy123")
Traceback (most recent call last):
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packaging.version.InvalidVersion: Invalid version: '1.3.xy123'
packaging.version.parse is a third-party uti...