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How to redirect to a 404 in Rails?
...uch as the ActiveRecord::RecordNotFound displaying the 404 error page.
It means you don't need to rescue this action yourself
def show
user = User.find(params[:id])
end
User.find raises an ActiveRecord::RecordNotFound when the user doesn't exist. This is a very powerful feature. Look at the fo...
Java ArrayList replace at specific index
...o asked question, he has mentioned he wants to replace the element so that means he has the arraylist with elements in it. now clear Sir???
– Android Killer
Oct 15 '13 at 4:45
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Difference between attr_accessor and attr_accessible
...ield for :price_off, if it's in your model it's available by default. This means a crafted POST could still set it. Using attr_accessible white lists those things that can be mass assigned.
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Why does MYSQL higher LIMIT offset slow the query down?
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@harald: what exactly do you mean by "not work"? This is a pure performance improvement. If there is no index usable by ORDER BY or the index covers all fields you need, you don't need this workaround.
– Quassnoi
No...
android get all contacts
... if(cur!=null){
cur.close();
}
}
If you need more reference means refer this link Read ContactList
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scopes with lambda and arguments in Rails 4 style?
... style of lambda either, so if you feel more comfortable using that by all means go for it.
I don't personally like the stabby lambda's syntax myself but eventually they will probably become the norm so it doesn't hurt to get used to them.
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Meaning of epsilon argument of assertEquals for double values
...If you want a margin of error (say for degrees) you could set epsilon to 1 meaning that, for example, 64.2° is the same as 64.8° (since abs(64.8-64.2) < 1)
– Pieter De Bie
Sep 25 '15 at 8:14
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When and why I should use session_regenerate_id()?
...e specific: dependend on the scripts security a session ID not necessarily means you can access the data of a logged out user, but generally spoken it's a possible and a high risk.
– codekandis
Feb 15 '18 at 10:33
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What is Double Brace initialization in Java?
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Thanks for clarifying the meaning of the inner and outer braces. I've wondered why there are suddenly two braces allowed with a special meaning, when they are in fact normal java constructs that only appear as some magical new trick. Things like that ...
Coarse-grained vs fine-grained
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In term of dataset like a text file ,Coarse-grained meaning we can transform the whole dataset but not an individual element on the dataset While fine-grained means we can transform individual element on the dataset.
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