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How to avoid overflow in expr. A * B - C * D

...e their types are: signed long long int A, B, C, D; Each number can be really big (not overflowing its type). While A*B could cause overflow, at same time expression A*B - C*D can be really small. How can I compute it correctly? ...
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Remote Connections Mysql Ubuntu

...'mypass'; CREATE USER 'myuser'@'%' IDENTIFIED BY 'mypass'; then, GRANT ALL ON *.* TO 'myuser'@'localhost'; GRANT ALL ON *.* TO 'myuser'@'%'; and finally, FLUSH PRIVILEGES; EXIT; If you don't have the same user created as above, when you logon locally you may inherit base localhost privileg...
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Strings in a DataFrame, but dtype is object

...mly requested element. The key to overcoming this is to use pointers. Basically, store each string in some random memory location, and fill the array with the memory address of each string. (Memory addresses are just integers.) So now, things look like this Now, if you ask your computer to fetch th...
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In laymans terms, what does 'static' mean in Java? [duplicate]

... does stuff } } So, instead of creating an instance of Foo and then calling doStuff like this: Foo f = new Foo(); f.doStuff(); You just call the method directly against the class, like so: Foo.doStuff(); share ...
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Smooth GPS data

... displaying current position on a map. The problem is that sometimes (specially when accuracy is low) the values vary a lot, making the current position to "jump" between distant points in the map. ...
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Copy files from one directory into an existing directory

... I really like this syntax, but for some reason it doesn't work with mv. Does anyone know why? – Martin von Wittich Sep 16 '13 at 11:18 ...
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How to hide a in a menu with CSS?

I've realized that Chrome, it seems, will not allow me to hide <option> in a <select> . Firefox will. 13 Ans...
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Why is there no Constant feature in Java?

...g to identify the reason behind constants in Java I have learned that Java allows us to declare constants by using final keyword. ...
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The identity used to sign the executable is no longer valid

... i had to delete all certificates/profiles manually and also refresh everything on the Apple developer portal and download them again, but it worked. – benka Oct 30 '13 at 15:36 ...
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The developers of this app have not set up this app properly for Facebook Login?

... the problem was you have to set Do you want to make this app and all its live features available to the general public? set status and review to ON and problem solved enjoy coding share | ...