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Restore the state of std::cout after manipulating it
... {
boost::io::ios_flags_saver ifs(x);
x << std::hex << 123;
}
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Convert string to integer type in Go?
... fmt.Printf("i=%d, type: %T\n", i, i)
}
Output (if called with argument "123"):
i=123, type: int
i=123, type: int64
i=123, type: int
Parsing Custom strings
There is also a handy fmt.Sscanf() which gives even greater flexibility as with the format string you can specify the number format (like ...
Where to store global constants in an iOS application?
...
You could also do a
#define kBaseURL @"http://192.168.0.123/"
in a "constants" header file, say constants.h. Then do
#include "constants.h"
at the top of every file where you need this constant.
This way, you can switch between servers depending on compiler flags, as in:
#i...
What does the PHP error message “Notice: Use of undefined constant” mean?
...example, this is OK, since underscores are allowed in variable names:
if (123 === $my_var) {
do_something();
}
But this isn't:
if (123 === $my-var) {
do_something();
}
It'll be interpreted the same as this:
if (123 === $my - var) { // variable $my minus constant 'var'
do_something();
}...
How can I check if a string represents an int, without using try/except?
...xcept ValueError:
return False
>>> print RepresentsInt("+123")
True
>>> print RepresentsInt("10.0")
False
It's going to be WAY more code to exactly cover all the strings that Python considers integers. I say just be pythonic on this one.
...
Alphabet range in Python
... 'y', 'z']
And to do it with range
>>> list(map(chr, range(97, 123))) #or list(map(chr, range(ord('a'), ord('z')+1)))
['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z']
Other helpful string module features:...
How do you UrlEncode without using System.Web?
... good examples comparing them so:
string testString = "http://test# space 123/text?var=val&another=two";
Console.WriteLine("UrlEncode: " + System.Web.HttpUtility.UrlEncode(testString));
Console.WriteLine("EscapeUriString: " + Uri.EscapeUriString(testString));
Console.WriteLine("Escape...
Capturing Groups From a Grep RegEx
...he following examples and more, which may not be what you're looking for:
123_abc_d4e5
xyz123_abc_d4e5
123_abc_d4e5.xyz
xyz123_abc_d4e5.xyz
To eliminate the second and fourth examples, make your regex like this:
^[0-9]+_([a-z]+)_[0-9a-z]*
which says the string must start with one or more digit...
List all indexes on ElasticSearch server?
...td_1458925361399 1 6 0 0 1008b 144b
green open qa-test123p_reports 1 6 3868280 25605 5.9gb 870.5mb
green open qa-dan050216p_1462220967543 1 6 0 0 1008b 144b
To get the 3rd column above (names of the indices):
$ curl -s 'http://localhost:...
WPS在线表格使用指导 · App Inventor 2 中文网
...都靠它）：
// App Inventor「WPS在线表格」通用脚本 v1（fun123.cn）：整段复制粘贴，无需修改
var a = Context.argv || {}
var s = a.sheet ? Application.Sheets.Item(a.sheet) : Application.ActiveSheet
if (!s) {
throw new Error('找不到工作表：' + a.sheet)
}
// 列号...