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How to trim whitespace from a Bash variable?
...SIX-compliant shell.
Reference
Remove leading & trailing whitespace from a Bash variable (original source)
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Removing an element from an Array (Java) [duplicate]
Is there any fast (and nice looking) way to remove an element from an array in Java?
15 Answers
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How to work with Git branches and Rails migrations
...e). But in development, it should be no big deal to recreate the database from the schema, which is what rake db:schema:load will do.
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Remove a fixed prefix/suffix from a string in Bash
... I have a string and its prefix/suffix. I need to remove the prefix/suffix from the original string.
9 Answers
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Constructors vs Factory Methods [closed]
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From page 108 of Design Patterns: Elements of Reusable Object-Oriented Software by Gamma, Helm, Johnson, and Vlissides.
Use the Factory Method pattern when
a class can't anticipate the class of objects it must create
a cla...
Asking the user for input until they give a valid response
I am writing a program that accepts an input from the user.
21 Answers
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What is the difference between old style and new style classes in Python?
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From New-style and classic classes:
Up to Python 2.1, old-style classes were the only flavour available to the user.
The concept of (old-style) class is unrelated to the concept of type:
if x is an instance of an o...
In Python, how do I determine if an object is iterable?
.... Based on that my conclusion is that nowadays this is the best approach:
from collections.abc import Iterable # drop `.abc` with Python 2.7 or lower
def iterable(obj):
return isinstance(obj, Iterable)
The above has been recommended already earlier, but the general consensus has been that ...
How to permanently remove few commits from remote branch
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You git reset --hard your local branch to remove changes from working tree and index, and you git push --force your revised local branch to the remote. (other solution here, involving deleting the remote branch, and re-pushing it)
This SO answer illustrates the danger of such a co...
“SetPropertiesRule” warning message when starting Tomcat from Eclipse [duplicate]
When I start Tomcat (6.0.18) from Eclipse (3.4), I receive this message (first in the log):
12 Answers
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