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Examples of GoF Design Patterns in Java's core libraries
...nent) (practically all over Swing thus)
javax.faces.component.UIComponent#getChildren() (practically all over JSF UI thus)
Decorator (recognizeable by creational methods taking an instance of same abstract/interface type which adds additional behaviour)
All subclasses of java.io.InputStream, Outpu...
Converting pfx to pem using openssl
...fx -out root.pem -cacerts
If you want your file to be password protected etc, then there are additional options.
You can read the entire documentation here.
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Limit file format when using ?
...h that extension. Extensions !== mime types
– Matt Fletcher
Sep 11 '19 at 11:11
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Pull all commits from a branch, push specified commits to another
...s. That is, instead of just having a 'master', have 'featureA', 'bugfixB', etc. Perform code review on an entire branch at a time - where each branch is very focused on doing only one thing - and then merge that one branch when you're done. This is the workflow that git is designed for, and what it'...
What is the difference between setUp() and setUpClass() in Python unittest?
... a temporary file on the filesystem, loading a shared library for testing, etc. Doing such things before each test would slow down the test suite too much, so we just do it once before all the tests. This is a slight degradation in the independence of the tests but a necessary optimization in some s...
How to overcome root domain CNAME restrictions?
...a common and logical thing to do. It uses less characters, it looks better etc. The url's own protocol identifier (www) is a vestigial part of the url if was even necessary in the first place (it wasn't).
– Ed Bishop
May 19 '16 at 6:57
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SQLAlchemy: print the actual query
...ample hooks (e.g. cursor_execute event, Python logging filters, @compiles, etc.) for any number of third party packages to implement pretty-printing systems.
– zzzeek
Aug 8 '14 at 14:33
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What is the difference between typeof and instanceof and when should one be used vs. the other?
...have different built-ins (different global object, different constructors, etc.). This may result in unexpected results.
For example, [] instanceof window.frames[0].Array will return false, because Array.prototype !== window.frames[0].Array and arrays inherit from the former.
Also, it cannot be us...
Media Queries: How to target desktop, tablet, and mobile?
...nd more semantic the DOM structure with nav, header, main, section, footer etc. (avoiding abominations like div class="header" with nested inner div tags) the easier it will be to engineer responsiveness, especially avoiding floats by using CSS Grid Layout (Sarah Drasner's grid generator is a great ...
C# short/long/int literal format?
In C / C# / etc. you can tell the compiler that a literal number is not what it appears to be (ie., float instead of double , unsigned long instead of int :
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