大约有 5,000 项符合查询结果（耗时：0.0182秒） [XML]
Convert a number range to another range, maintaining ratio
I'm trying to convert one range of numbers to another, maintaining ratio. Maths is not my strong point.
18 Answers
...
What is the difference between range and xrange functions in Python 2.X?
Apparently xrange is faster but I have no idea why it's faster (and no proof besides the anecdotal so far that it is faster) or what besides that is different about
...
How to urlencode data for curl command?
...
Here is the pure BASH answer.
rawurlencode() {
local string="${1}"
local strlen=${#string}
local encoded=""
local pos c o
for (( pos=0 ; pos<strlen ; pos++ )); do
c=${string:$pos:1}
case "$c" in
[-_.~a-zA-Z0-9] ) o="${c}" ;...
Changing specific text's color using NSMutableAttributedString in Swift
...g e.g.
var main_string = "Hello World"
var string_to_color = "World"
var range = (main_string as NSString).rangeOfString(string_to_color)
Then you convert to attributed string and use 'add attribute' with NSForegroundColorAttributeName:
var attributedString = NSMutableAttributedString(string:ma...
Bold & Non-Bold Text In A Single UILabel?
...eally simple:
Swift 5
func attributedString(from string: String, nonBoldRange: NSRange?) -> NSAttributedString {
let fontSize = UIFont.systemFontSize
let attrs = [
NSAttributedString.Key.font: UIFont.boldSystemFont(ofSize: fontSize),
NSAttributedString.Key.foregroundCol...
SQLAlchemy IN clause
...
An alternative way is using raw SQL mode with SQLAlchemy, I use SQLAlchemy 0.9.8, python 2.7, MySQL 5.X, and MySQL-Python as connector, in this case, a tuple is needed. My code listed below:
id_list = [1, 2, 3, 4, 5] # in most case we have an integer l...
Comparing date ranges
In MySQL, If I have a list of date ranges (range-start and range-end). e.g.
10 Answers
...
What is Unicode, UTF-8, UTF-16?
...mbers and letters like the ones in this sentence. Unfortunately, today's strange world of global intercommunication and social media was not foreseen, and it is not too unusual to see English, العربية, 汉语, עִבְרִית, ελληνικά, and ភាសាខ្មែរ in the same doc...
Why do I need 'b' to encode a string with Base64?
..., base64 encoding has to do the encoding in the opposite direction (so the raw data is converted to 'dGVzdA') and also has a rule to tell other applications how much space is left off at the end. This is done by padding the end with '=' symbols. So, the base64 encoding of this data is 'dGVzdA==', wi...
C++11 reverse range-based for-loop
...e direction of iterators so I can iterate over a container in reverse with range-based for-loop?
8 Answers
...