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How to do constructor chaining in C#
...ult arguments are set at compile time in the caller, not the callee. That means if you deploy code like this in a library and an application uses a constructor with default args; you need a re-compile of the application using the library if the default arguments change. Some people consider defaul...
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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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...
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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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
1
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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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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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Understanding dict.copy() - shallow or deep?
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By "shallow copying" it means the content of the dictionary is not copied by value, but just creating a new reference.
>>> a = {1: [1,2,3]}
>>> b = a.copy()
>>> a, b
({1: [1, 2, 3]}, {1: [1, 2, 3]})
>>> a[1].appe...
Stop node.js program from command line
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Ctrl+Z suspends it, which means it can still be running.
Ctrl+C will actually kill it.
you can also kill it manually like this:
ps aux | grep node
Find the process ID (second from the left):
kill -9 PROCESS_ID
This may also work
killall node
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