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Get the value of an instance variable given its name
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The most idiomatic way to achieve this is:
some_object.instance_variable_get("@#{name}")
There is no need to use + or intern; Ruby will handle this just fine. However, if you find yourself reaching into another object and pulling o...
How to Remove ReadOnly Attribute on File Using PowerShell?
...itance:e /T")
Shell("attrib -r +s C:\\sharefolder\*.* /s /d", AppWinStyle.Hide)
thanks for anybody who are helping to solved some problem...and helping this code
this code is working for me.. to share a folder to every one with read and write permission
you can use this in .net
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Python: using a recursive algorithm as a generator
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This avoids the len(string)-deep recursion, and is in general a nice way to handle generators-inside-generators:
from types import GeneratorType
def flatten(*stack):
stack = list(stack)
while stack:
try: x = stack[0...
How does one use rescue in Ruby without the begin and end block
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I'm using the def / rescue combination a lot with ActiveRecord validations:
def create
@person = Person.new(params[:person])
@person.save!
redirect_to @person
rescue ActiveRecord::RecordInvalid
render :action => :new
end
I think this is very lean code!
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How to indicate param is optional using inline JSDoc?
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I was asking how to do it inline. The example you are providing seem to be the same as what I showed in my question.
– studgeek
Apr 9 '16 at 4:04
add a commen...
Concatenate a vector of strings/character
...le lengths then paste(sdata, sep = '', collapse = '') should be used to avoid unexpected results.
– zelanix
Jan 19 '14 at 22:03
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What is the point of noreturn?
[dcl.attr.noreturn] provides the following example:
5 Answers
5
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What does an underscore in front of an import statement mean?
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Short answer:
It's for importing a package solely for its side-effects.
From the Go Specification:
To import a package solely for its side-effects (initialization), use the blank identifier as explicit package name:
import _ "lib/math"
In sqlite3
In the case of go-sqlite3, the unde...
How do you sort a list in Jinja2?
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@Nick: I did a quick test, and it seemed to work with both objects and dicts.
– Steve S
Apr 1 '11 at 15:39
2
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Can you 'exit' a loop in PHP?
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@Gabriel: You didn't post an example at all, and the link you gave goes to the exact same source I supplied (which is where the sample code comes from at the very top). You basically did the same thing as I did, but made it so the OP won't ...