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Round to at most 2 decimal places (only if necessary)
... drops any "extra" zeroes at the end.
// It changes the result (which is a string) into a number again (think "0 + foo"),
// which means that it uses only as many digits as necessary.
It seems like Math.round is a better solution. But it is not! In some cases it will NOT round correctly:
Math.round...
Is it bad practice to make a setter return “this”?
...builder pattern or a fluent interface.
It's also common in the Java API:
String s = new StringBuilder().append("testing ").append(1)
.append(" 2 ").append(3).toString();
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Encoding an image file with base64
I want to encode an image into a string using the base64 module. I've ran into a problem though. How do I specify the image I want to be encoded? I tried using the directory to the image, but that simply leads to the directory being encoded. I want the actual image file to be encoded.
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tinyxml XML解析库下载（tinyxml2.h 和 tinyxml2.cpp） - 源码下载 - 清泛...
...de <limits.h>
# include <stdio.h>
# include <stdlib.h>
# include <string.h>
# include <stdarg.h>
#else
# include <cctype>
# include <climits>
# include <cstdio>
# include <cstdlib>
# include <cstring>
# include <cstdarg>
#endif
/*
TODO: intern strings instead o...
Find size of an array in Perl
...$size;
The latter looks quite clear alone like this, but I find that the extra line takes away from clarity when part of other code. It's useful for teaching what @array does in scalar context, and maybe if you want to use $size more than once.
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Getting and removing the first character of a string
I would like to do some 2-dimensional walks using strings of characters by assigning different values to each character. I was planning to 'pop' the first character of a string, use it, and repeat for the rest of the string.
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Python __str__ and lists
In Java, if I call List.toString(), it will automatically call the toString() method on each object inside the List. For example, if my list contains objects o1, o2, and o3, list.toString() would look something like this:
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Best design for a changelog / auditing database table? [closed]
...f the message is system generated, just use a key here for the translation string;
– jonathancardoso
Dec 4 '13 at 18:51
4
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Logical XOR operator in C++?
...!= !B implements the proper XOR in that regard.
But if you care about the extra sequence point though, neither != nor bitwise ^ is the proper way to implement XOR. One possible way to do XOR(a, b) correctly might look as follows
a ? !b : b
This is actually as close as you can get to making a hom...
Find an item in List by LINQ?
Here I have a simple example to find an item in a list of strings. Normally I use for loop or anonymous delegate to do it like this:
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