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What does the “yield” keyword do?
...create_atm(self):
... while not self.crisis:
... yield "$100"
>>> hsbc = Bank() # When everything's ok the ATM gives you as much as you want
>>> corner_street_atm = hsbc.create_atm()
>>> print(corner_street_atm.next())
$100
>>> print(corner_stree...
#1071 - Specified key was too long; max key length is 1000 bytes
...Here's a method to find out:
SELECT
ROUND(SUM(LENGTH(`menu_link`)<10)*100/COUNT(`menu_link`),2) AS pct_length_10,
ROUND(SUM(LENGTH(`menu_link`)<20)*100/COUNT(`menu_link`),2) AS pct_length_20,
ROUND(SUM(LENGTH(`menu_link`)<50)*100/COUNT(`menu_link`),2) AS pct_length_50,
ROUND(SUM(LENGTH...
What is the fastest way to send 100,000 HTTP requests in Python?
I am opening a file which has 100,000 URL's. I need to send an HTTP request to each URL and print the status code. I am using Python 2.6, and so far looked at the many confusing ways Python implements threading/concurrency. I have even looked at the python concurrence library, but cannot figure ...
Lua简明教程 - 脚本技术 - 清泛IT论坛，有思想、有深度
...double型，64bits，你不必担心Lua处理浮点数会慢（除非大于100,000,000,000,000），或是会有精度问题。你可以以如下的方式表示数字，0x开头的16进制和C是很像的。num = 1024
num = 3.0
num = 3.1416
num = 314.16e-2
num = 0.31416E1
num = 0xff
num = 0x56复制...
Replace console output in Python
...ogress_x = 0
def progress(x):
global progress_x
x = int(x * 40 // 100)
sys.stdout.write("#" * (x - progress_x))
sys.stdout.flush()
progress_x = x
def endProgress():
sys.stdout.write("#" * (40 - progress_x) + "]\n")
sys.stdout.flush()
You call startProgress passing the...
Hex transparency in colors [duplicate]
...le of percentages to hex values. E.g. for 50% white you'd use #80FFFFFF.
100% — FF
95% — F2
90% — E6
85% — D9
80% — CC
75% — BF
70% — B3
65% — A6
60% — 99
55% — 8C
50% — 80
45% — 73
40% — 66
35% — 59
30% — 4D
25% — 40
20% — 33
15% — 26
10% — 1A
5% — 0D
0% ...
Rounding float in Ruby
...; "2.35"
If you want to store it rounded, you can use
>> (2.3465*100).round / 100.0
=> 2.35
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What is the most efficient string concatenation method in python?
...sion: C:\temp>python -mtimeit "''.join(chr(x) for x in xrange(65,91))" 100000 loops, best of 3: 9.71 usec per loop C:\temp>python -mtimeit "''.join([chr(x) for x in xrange(65,91)])" 100000 loops, best of 3: 7.1 usec per loop
– hughdbrown
Aug 30 '09 at 5...
How can I add a box-shadow on one side of an element?
... the box-shadow rule:
.myDiv
{
border: 1px solid #333;
width: 100px;
height: 100px;
box-shadow: 10px 0 5px -2px #888;
}
<div class="myDiv"></div>
The fourth property there -2px is the shadow spread, you can use it to change the spread of the shadow, making it ...
How to insert a character in a string at a certain position?
...
int yourInteger = 123450;
String s = String.format("%6.2f", yourInteger / 100.0);
System.out.println(s);
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