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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...
Detect if value is number in MySQL
...eptions you gave. Thought you meant the character "e". I see what you mean now.
– Urbycoz
Feb 21 '11 at 12:53
Leading ...
Can I scroll a ScrollView programmatically in Android?
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Excellent ! Indeed, without the Runnable, it didn't work. Now, it works ! :)
– Regis_AG
Sep 13 '13 at 18:00
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how to check if a form is valid programmatically using jQuery Validation Plugin
...tion Plugin from http://jquery.bassistance.de/validate/ . I just want to know if there is any way I can check if the form is considered in valid state by jquery validation plugin from anywhere in my javascript code.
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How do I create and access the global variables in Groovy?
...thin a closure? E.g: i have def a = null at the beginning of the script. Now the inside a closure, the value of a = 'some string' , is assigned. I want this new value to be accessible to all other closures. thanks
– OK999
Oct 26 '17 at 18:30
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What's the best practice to round a float to 2 decimals? [duplicate]
...that allows you to round a number to the number of decimals that you want. Now you need two, but maybe you would like to try with 3 to compare results, and this function gives you this freedom.
/**
* Round to certain number of decimals
*
* @param d
* @param decimalPlace
* @return
*/
public stati...
How does C compute sin() and other math functions?
...s code uses some numerical hacks I've never seen before, though for all I know they might be well-known among floating-point experts. Sometimes a few lines of code would take several paragraphs to explain. For example, these two lines
double t = (x * hpinv + toint);
double xn = t - toint;
are use...
Using the “final” modifier whenever applicable in Java [closed]
... which resulted in your code. At least it should ring some bells when they now want to change your previously immutable thing.
At first, it kind of looks awkward to see a lot of final keywords in your code, but pretty soon you'll stop noticing the word itself and will simply think, that-thing-will-...
How to check if string input is a number? [duplicate]
...ut hope this helps other persons who are looking for answers :) . let me know if anythings wrong in the given code.
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How to remove remote origin from Git repo
...repo and then added a remote repository using git remote add origin url . Now I want to remove this git remote add origin and add a new repository git remote add origin new-url . How can I do it?
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