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Struggling with NSNumberFormatter in Swift for currency
...e on how to use it on Swift 3.
( Edit: Works in Swift 4 too )
let price = 123.436 as NSNumber
let formatter = NumberFormatter()
formatter.numberStyle = .currency
// formatter.locale = NSLocale.currentLocale() // This is the default
// In Swift 4, this ^ has been renamed to simply NSLocale.current
...
How can I parse a time string containing milliseconds in it with python?
...ou're using 2.6 or 3.0, you can do this:
time.strptime('30/03/09 16:31:32.123', '%d/%m/%y %H:%M:%S.%f')
Edit: I never really work with the time module, so I didn't notice this at first, but it appears that time.struct_time doesn't actually store milliseconds/microseconds. You may be better off u...
How can I convert a string to a number in Perl?
...
This is a simple solution:
Example 1
my $var1 = "123abc";
print $var1 + 0;
Result
123
Example 2
my $var2 = "abc123";
print $var2 + 0;
Result
0
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improve thi...
Test whether string is a valid integer
...of "+" (e.g. +30) which obviously is an integer.
Results:
$ int_check.sh 123
123 is an integer !!
$ int_check.sh 123+
ERROR: first parameter must be an integer.
$ int_check.sh -123
-123 is an integer !!
$ int_check.sh +30
+30 is an integer !!
$ int_check.sh -123c
ERROR: first parameter must be...
How many bytes does one Unicode character take?
...82
UTF-8: E2 84 A2
UTF-16: 21 22
U+2603 SNOWMAN: ☃
Nº: 9731
UTF-8: E2 98 83
UTF-16: 26 03
U+260E BLACK TELEPHONE: ☎
Nº: 9742
UTF-8: E2 98 8E
UTF-16: 26 0E
U+2614 UMBRELLA WITH RAIN DROPS: ☔
Nº: 9748
UTF-8: E2 98 94
UTF-16: 26 14
U+263A WHITE SMILING FACE: ☺
Nº: 9786
UTF-8: E2 98 ...
Redis消息通知系统的实现 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...ontent content3
再把这三条消息发送给某个用户,其<USRID>是123:
redis> SADD usr:123:msg 1
redis> SADD usr:123:msg 2
redis> SADD usr:123:msg 3
此时如果简单查询用户有哪些消息的话,无疑只能查到一些<MSGID>:
redis> SMEMBERS usr:123:msg
1) "1"
2) "2...
How to get the data-id attribute?
...
To get the contents of the attribute data-id (like in <a data-id="123">link</a>) you have to use
$(this).attr("data-id") // will return the string "123"
or .data() (if you use newer jQuery >= 1.4.3)
$(this).data("id") // will return the number 123
and the part after data- ...
What is the difference between a strongly typed language and a statically typed language?
...at's static typing.
In PHP:
$s = "abcd"; // $s is a string
$s = 123; // $s is now an integer
$s = array(1, 2, 3); // $s is now an array
$s = new DOMDocument; // $s is an instance of the DOMDocument class
That's dynamic typing.
Strong/Weak Typing
(Edit alert!)
Strong typi...
An example of how to use getopts in bash
...pecify strength, either 45 or 90.
h | *) # Display help.
$ ./foo.sh -s 123 -p any_string
Strength needs to be either 45 or 90, 123 found instead.
p is any_string
$ ./foo.sh -s 90 -p any_string
Strength is 90.
p is any_string
See: Small getopts tutorial at Bash Hackers Wiki
...
How can I pad a String in Java?
...*chars
Display '*' for characters of password:
String password = "secret123";
String padded = String.format("%"+password.length()+"s", "").replace(' ', '*');
output has the same length as the password string:
secret123
*********
...