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The tilde operator in Python
...sentation of the integer are reversed (as in b <- b XOR 1 for each individual bit), and the result interpreted again as a twos-complement integer. So for integers, ~x is equivalent to (-x) - 1.
The reified form of the ~ operator is provided as operator.invert. To support this operator in your ...
Rails 3 migrations: Adding reference column?
...gration AddUserRefToProducts user:references
like you can see on rails guides
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CSS two divs next to each other
...out 200px; and the left <div> must fill up the rest of the screen width? How can I do this?
13 Answers
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How to replace a hash key with another key
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deep_transform_keys can be used for it :) apidock.com/rails/v4.2.1/Hash/deep_transform_keys
– gayavat
Nov 30 '15 at 6:28
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Can we pass parameters to a view in SQL?
..._emp (@pintEno INT)
RETURNS TABLE
AS
RETURN
SELECT * FROM emp WHERE emp_id=@pintEno;
This allows you to use it as a normal view, with:
SELECT * FROM v_emp(10)
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How do I use su to execute the rest of the bash script as that user?
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I did this - but it still asked me for a password.
– Hippyjim
Oct 19 '13 at 16:30
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Socket.io rooms difference between broadcast.to and sockets.in
.... Also, every socket is automatically connected to their own room with the id socket.id (this is how private chat works in socketio, they use rooms).
Send to the sender and noone else
socket.emit('hello', msg);
Send to everyone including the sender(if the sender is in the room) in the room "my r...
How to access parent Iframe from JavaScript
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Also you can set name and ID to equal values
<iframe id="frame1" name="frame1" src="any.html"></iframe>
so you will be able to use next code inside child page
parent.document.getElementById(window.name);
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How to set default value to the input[type=“date”] [duplicate]
I have tried ( JSFiddle ):
14 Answers
14
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Cannot set property 'innerHTML' of null
...ads the entire HTML DOM from top to bottom. Any JavaScript code written inside the script tags (present in head section of your HTML file) gets executed by the browser rendering engine even before your whole DOM (various HTML element tags present within body tag) is loaded. The scripts present in h...