大约有 31,100 项符合查询结果（耗时：0.0693秒） [XML]
Test whether a Ruby class is a subclass of another class
...
Hmm, strange syntax (wouldn't have been my first guess), but thanks for the clarification!
– Brian Armstrong
Oct 26 '12 at 1:31
2
...
Rails: How do I create a default value for attributes in Rails activerecord's model? [duplicate]
...to this question.
In Rails 3.0 you want to do something like this:
class MyModel < ActiveRecord::Base
after_initialize :default_values
private
def default_values
self.name ||= "default value"
end
end
...
How to use filter, map, and reduce in Python 3
...better fix" is to use a list comprehension instead - like [Foo(x) for x in mylist]. This doesn't lead to adding list() everywhere and longer term may be better. (@javadba FYI)
– dmonopoly
Nov 13 '19 at 15:52
...
How to make layout with rounded corners..?
...n I make a layout with rounded corners? I want to apply rounded corners to my LinearLayout .
18 Answers
...
What is the purpose of .PHONY in a Makefile?
...kinda pointless since I'll never have files named 'install' or the like in my codebase. Most files are going to have a file extension, and the files without a file extension are usually in all caps, like 'README'. Then again, if you have a bash script named 'install' instead of 'install.sh', you are...
MVC pattern on Android
...nds to me like it could result in “I'm going to put a washing machine in my kitchen because washing machines implement the Cleaner™ pattern and kitchens need that”.
– Lukas Juhrich
Dec 2 '18 at 3:04
...
Using parameters in batch files at Windows command line
... at boot time.
Example:
Put the following command in a batch file called mybatch.bat:
@echo off
@echo hello %1 %2
pause
Invoking the batch file like this: mybatch john billy would output:
hello john billy
Get more than 9 parameters for a batch file, use: %*
The Percent Star token %* means "...
How to quit scala 2.11.0 REPL?
...
Have no windows machine at my disposal right now. @GovindSinghNagarkoti . What works for you ?
– Andreas Neumann
Feb 16 '15 at 9:39
...
Should methods that throw RuntimeException indicate it in method signature?
...
In my point of view it's better to declare runtime exceptions at least in the javadoc for the method. Declaring it in the signature makes it even more obvious what may happen when something goes wrong. This is my main reason for...
How exactly does the “Specific Version” property of an assembly reference work in Visual Studio?
...orks. Even SO, it appears to me, does not have all the answers, so here is my attempt at self-answering the question:
2 Ans...