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List all environment variables from the command line
Is it possible to list all environment variables from a Windows' command prompt?
8 Answers
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Google Authenticator implementation in Python
I am trying to use one-time passwords that can be generated using Google Authenticator application .
2 Answers
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AWS Difference between a snapshot and AMI
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There are two types of AMIs (and corresponding instances):
instance-store (sometimes called S3-based). These are less common and I don't recommend them for beginners. An instance-store AMI is a copy of the root instance-store volume plus some metadata, all saved in an S3 bucket in a special ...
How can I make an “are you sure” prompt in a Windows batchfile?
I have a batch file that automates copying a bunch of files from one place to the other and back for me. Only thing is as much as it helps me I keep accidentally selecting that command off my command buffer and mass overwriting uncommited changes.
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How to use BigInteger?
...er whose value is (this + val)." Therefore, you can't change sum, you need to reassign the result of the add method to sum variable.
sum = sum.add(BigInteger.valueOf(i));
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decorators in the python standard lib (@deprecated specifically)
I need to mark routines as deprecated, but apparently there's no standard library decorator for deprecation. I am aware of recipes for it and the warnings module, but my question is: why is there no standard library decorator for this (common) task ?
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What's the best way to check if a String represents an integer in Java?
I normally use the following idiom to check if a String can be converted to an integer.
38 Answers
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__getattr__ on a module
...ining __enter__ and __exit__, before those tricks broke.
Recently some historical features have made a comeback, the module __getattr__ among them, and so the existing hack (a module replacing itself with a class in sys.modules at import time) should be no longer necessary.
In Python 3.7+, you ju...
How to tell bash that the line continues on the next line
..., some lines exceeded 80 columns in length. What is the character or thing to be added to the line in order to indicate that the line continues on the next line?
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Alarm Manager Example
I want to implement a schedule function in my project. So I Googled for an Alarm manager program but I can`t find any examples.
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