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Efficient way to determine number of digits in an integer
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Well, the most efficient way, presuming you know the size of the integer, would be a lookup. Should be faster than the much shorter logarithm based approach. If you don't care about counting the '-', remove the + 1.
// generic solution
template <class T>
int nu...
Convert from ASCII string encoded in Hex to plain ASCII?
...as familiar with Python 3. This solution also won't work in 1 as far as I know.
– cjm
Mar 10 '12 at 17:46
27
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In Java, what does NaN mean?
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Minimal runnable example
The first thing that you have to know, is that the concept of NaN is implemented directly on the CPU hardware.
All major modern CPUs seem to follow IEEE 754 which specifies floating point formats, and NaNs, which are just special float values, are part of th...
Get selected value in dropdown list using JavaScript
... should be e.target.options[e.target.selectedIndex].text don't know why it's wrong in all answers here..
– OZZIE
Jan 2 '19 at 11:10
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How to create Java gradle project
... it.mkdirs() }
sourceSets*.resources.srcDirs*.each { it.mkdirs() }
}
Now we can setup a new gradle Java EE project to eclipse with only one command. I put this example at GitHub
share
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improv...
Scanner vs. BufferedReader
As far I know, the two most common methods of reading character-based data from a file in Java is using Scanner or BufferedReader . I also know that the BufferedReader reads files efficiently by using a buffer to avoid physical disk operations.
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How to modify list entries during for loop?
Now I know that it is not safe to modify the list during an iterative looping. However, suppose I have a list of strings, and I want to strip the strings themselves. Does replacement of mutable values count as modification?
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MySQL: Enable LOAD DATA LOCAL INFILE
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Mohit, somehow I solved it, because now the global variable 'local_infile' is always ON, even after reboot. And it seems I did not use my.cnf file for this. Could you, please, try to log in into PhpMyAdmin, latest version, as root, go to the Variables section, ...
jQuery Tips and Tricks
...= $("<div />");
newDiv.attr("id", "myNewDiv").appendTo("body");
/* Now whenever I want to append the new div I created,
I can just reference it from the "newDiv" variable */
Checking if an element exists
if ($("#someDiv").length)
{
// It exists...
}
Writing your own selectors
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Access POST values in Symfony2 request object
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This is great, and now is the best answer. $form->getData() didn't exist or wasn't documented when I asked the question.
– Acyra
Nov 6 '12 at 21:27
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