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How to open multiple pull requests on GitHub
...pull request on GitHub .
All commits since my last request and all new ones are automatically added to this request .
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explicit casting from super class to subclass
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To develop the answer of @Caumons:
Imagine one father class has many children and there is a need to add a common
field into that class. If you consider the mentioned approach, you should
go to each children class one by one and refactor their constructors for the...
Get path of executable
...l haven't seen a satisfactory answer, or a definitive "no, this cannot be done", so I'll ask again!
23 Answers
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What is the easiest way to duplicate an activerecord record?
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To get a copy, use the clone (or dup for rails 3.1+) method:
# rails < 3.1
new_record = old_record.clone
#rails >= 3.1
new_record = old_record.dup
Then you can change whichever fields you want.
ActiveRecord overrides the built-in Object#cl...
Is there a CSS selector by class prefix?
I want to apply a CSS rule to any element whose one of the classes matches specified prefix.
4 Answers
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Optional Methods in Java Interface
...contain the remove operation.
Now can you do away with UnsupportedOperationException? Unfortunately
not.
Consider arrays. They implement most of the List operations, but not
remove and add. They are "fixed-size" Lists. If you want to capture
this notion in the hierarchy, you have to add...
Hashing a string with Sha256
...oding, used in the Windows world for historical reasons but not used by anyone else). http://msdn.microsoft.com/en-us/library/system.text.encoding.unicode.aspx
If you inspect your bytes array, you'll see that every second byte is 0x00 (because of the double-wide encoding).
You should be using Enco...
Why Doesn't C# Allow Static Methods to Implement an Interface?
...ke a non-nullable “this” argument (unlike an instance or virtual), but one where the method called would depend on the constructed type of T (unlike a static, which must be determinable at compile time).
but is yet to be convinced of its usefulness.
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Creating folders inside a GitHub repository without using Git
...w folder from the web interface, but it would require you to have at least one file within the folder when creating it.
When using the normal way of creating new files through the web interface, you can type in the folder into the file name to create the file within that new directory.
For example...
Why not infer template parameter from constructor?
...genuinely can't believe it was accepted, reached +29, took 6 years for someone to notice the glaring problem, and sat without a single downvote for 7 years. Does no one else think while they read, or...?
– underscore_d
Aug 21 '16 at 19:19
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