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What's the correct way to convert bytes to a hex string in Python 3?
...t; b'\xde\xad\xbe\xef'.hex()
'deadbeef'
and reverse:
>>> bytes.fromhex('deadbeef')
b'\xde\xad\xbe\xef'
works also with the mutable bytearray type.
Reference: https://docs.python.org/3/library/stdtypes.html#bytes.hex
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Clear android application user data
...lear our own application cache data, i need to clear another app user data from our application
– UdayaLakmal
Jun 7 '12 at 15:10
2
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BigDecimal setScale and round
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See: "precision": The digit count starts from the leftmost nonzero digit of the exact result. docs.oracle.com/javase/7/docs/api/java/math/BigDecimal.html
– Eddy
Sep 6 '16 at 7:06
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How SignalR works internally?
...al to respond. When there is a signal or the request times out, it returns from the server and sends another request and the process continues. (I left some details out about how the client it keeps track of what it saw so it doesn't miss messages)
Hopefully that answers most of your question.
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jQuery Event Keypress: Which key was pressed?
...d of these magic numbers.
You can also make use of String.charCodeAt and .fromCharCode:
>>> String.charCodeAt('\r') == 13
true
>>> String.fromCharCode(13) == '\r'
true
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i...
How do I create directory if none exists using File class in Ruby?
...to(tokens.size - 1) do |n|
# Builds directory path one folder at a time from top to bottom
unless n == (tokens.size - 1)
new_dir << "#{tokens[n].to_s}/" # All folders except innermost folder
else
new_dir << "#{tokens[n].to_s}" # Innermost folder
end
# Creates director...
Hibernate: “Field 'id' doesn't have a default value”
...te is set up to automatically create/manage the DB schema. To drop tables from a managed schema, SET foreign_key_checks = 0; is your friend. Just be sure to SET foreign_key_checks = 1; when you're done.
– aroth
Aug 27 '12 at 5:00
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Do rails rake tasks provide access to ActiveRecord models?
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All your rails models etc. will be available for the current environment from within each task block, unless you're using the production environment, in which case you need to require the specific models you want to use. Do this within the body of the task. (IIRC this varies between different ver...
How do I test if a variable is a number in Bash?
...rne shell, and has built-in support for glob-style wildcards. If you come from another programming language, it looks eerie, but it's much more elegant than coping with the brittleness of various quoting issues and endless backwards/sideways compatibility problems with if test ...
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IntelliJ Split Window Navigation
... window (horizontal or vertical) into N tab groups, how do I switch/toggle from one tab group to another via the keyboard? If all of the tabs are in the same group you can switch from each tab easily (CTRL + right/left arrow), but when they're in separate tab groups I can't. I've searched through ...