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Design Patterns: Factory vs Factory method vs Abstract Factory
...ional patterns:
Design start out using Factory Method (less complicated, more customizable, subclasses proliferate) and evolve toward Abstract Factory, Prototype, or Builder (more flexible, more complex) as the designer discovers where more flexibility is needed
Abstract Factory classes are ofte...
What are the differences between “=” and “
...ng otherwise. Even the R documentation of ?assignOps claims that there are more differences:
The operator <- can be used anywhere,
whereas the operator = is only allowed at the top level (e.g.,
in the complete expression typed at the command prompt) or as one
of the subexpressions in a ...
How can I know if a branch has been already merged into master?
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Getter and Setter?
I'm not a PHP developer, so I'm wondering if in PHP is more popular to use explicit getter/setters, in a pure OOP style, with private fields (the way I like):
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Questions every good Java/Java EE Developer should be able to answer? [closed]
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Why is #!/usr/bin/env bash superior to #!/bin/bash?
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@JulioGuerra Much like having a /usr/lib/sendmail (or, more recently, /usr/sbin/sendmail) binary available to process mail, it's in a Unix-like system's best interest to have /usr/bin/env because the env shebang is such common practice. It is a de facto standard interface.
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What's a quick way to comment/uncomment lines in Vim?
...t requires to install a plugin. Also the best answer has already received more votes but it hasn't been marked as solution.
– whirmill
Jul 10 '18 at 10:17
181
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'Operation is not valid due to the current state of the object' error during postback
...pnet:MaxHttpCollectionKeys" value="2001" />
</appSettings>
For more information please read this post. For more insight into the security patch by microsoft you can read this Knowledge base article
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How to select rows from a DataFrame based on column values?
...te the parentheses. Due to Python's operator precedence rules, & binds more tightly than <= and >=. Thus, the parentheses in the last example are necessary. Without the parentheses
df['column_name'] >= A & df['column_name'] <= B
is parsed as
df['column_name'] >= (A &...
MVC pattern on Android
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No. There definitely is MVC in Android, but more implicitly. It's just implemented in a different way as per how Android structures everything.
– 6rchid
Jan 22 '19 at 2:03
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