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Imply bit with constant 1 or 0 in SQL Server
... To make the code more readable we standardised our SQL and now use declared bit variables when we need to express true/false.
– Damien McGivern
Feb 22 '11 at 15:54
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C++: How to round a double to an int? [duplicate]
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float x = 55; // stored as 54.999999...
x = x + 0.5 - (x<0); // x is now 55.499999...
int y = (int)x; // truncated to 55
C++11 also introduces std::round, which likely uses a similar logic of adding 0.5 to |x| under the hood (see the link if interested) but is obviously more robust.
A follo...
How to get element by class name? [duplicate]
... first one use:
document.getElementsByClassName('class_name')[0]
UPDATE
Now you can use:
document.querySelector(".class_name") to get the first element with the class_name CSS class (null will be returned if non of the elements on the page has this class name)
or document.querySelectorAll(".cla...
How to compare variables to undefined, if I don’t know whether they exist? [duplicate]
...iable and if it’s undefined , you can check variable == undefined ; I know that, but how can you compare a value that you don’t know yet if it’s in memory?
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How do I get an empty array of any size in python?
...swering the question for readers in the future, not just the person asking now. Please edit your answer to add explanations and give an indication of what limitations and assumptions apply.
– Xnero
Jun 24 at 12:01
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Why is setTimeout(fn, 0) sometimes useful?
...(say takes 3 min)
Prints the results of calculation into the result div.
Now, your users start testing this, click "do something" button, and the page sits there doing seemingly nothing for 3 minutes, they get restless, click the button again, wait 1 min, nothing happens, click button again...
T...
How can I stop a running MySQL query?
I connect to mysql from my Linux shell. Every now and then I run a SELECT query that is too big. It prints and prints and I already know this is not what I meant. I would like to stop the query.
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How to test if parameters exist in rails
...I, but I'm sure that's safe enough. I've been calling params.to_h.key? for now.
– stephen.hanson
Nov 9 '16 at 19:38
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show 12 more comments
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How to reset db in Django? I get a command 'reset' not found error
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thanks, good to know, recent (last modified 6 months ago) public django documentation about fixtures still (2019-07-11) talks about 'reset': code.djangoproject.com/wiki/Fixtures
– vchrizz
Jul 11 '19 at 2...
Where does PHP's error log reside in XAMPP?
...side the vm (which took me an embarassingly long time to realise). I only know how to access via the xampp control panel terminal, with a path of: /opt/lampp/logs/php_error_log
– Scott Anderson
Apr 13 '19 at 14:16
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