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Passing a dictionary to a function as keyword parameters
...
In[1]: def myfunc(a=1, b=2):
In[2]: print(a, b)
In[3]: mydict = {'a': 100, 'b': 200}
In[4]: myfunc(**mydict)
100 200
A few extra details that might be helpful to know (questions I had after reading this and went and tested):
The function can have parameters that are not included in the dic...
Convert a number range to another range, maintaining ratio
...ll relative to the other one (not exactly sure, but if there's more than a 1000000 factor difference between the size of the ranges, make sure that it actually behaves like you expect... or learn about floating point inaccuracy)
– jerryjvl
May 30 '09 at 6:39
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How to format a float in javascript?
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var result = Math.round(original*100)/100;
The specifics, in case the code isn't self-explanatory.
edit: ...or just use toFixed, as proposed by Tim Büthe. Forgot that one, thanks (and an upvote) for reminder :)
...
I get exception when using Thread.sleep(x) or wait()
...ead interruptions. But this will do what you want:
try {
Thread.sleep(1000); //1000 milliseconds is one second.
} catch(InterruptedException ex) {
Thread.currentThread().interrupt();
}
share
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How to center canvas in html5
...
Just center the div in HTML:
#test {
width: 100px;
height:100px;
margin: 0px auto;
border: 1px solid red;
}
<div id="test">
<canvas width="100" height="100"></canvas>
</div>
Just change the height and width to whatever a...
Simulate delayed and dropped packets on Linux
...going out of the local Ethernet.
# tc qdisc add dev eth0 root netem delay 100ms
Now a simple ping test to host on the local network should show an increase of 100 milliseconds. The delay is limited by the clock resolution of the kernel (Hz). On most 2.4 systems, the system clock runs at 100 ...
How to vertically align into the center of the content of a div with defined width/height?
...your parent div, you can use of the following options:
.area{
height: 100px;
width: 100px;
background: red;
margin:10px;
text-align: center;
display:table-cell;
vertical-align:middle;
}
Live DEMO
Version 2: Parent div with display block and content display table-...
Full-screen iframe with a height of 100%
Is iframe height=100% supported in all browsers?
17 Answers
17
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Python dictionary: Get list of values for list of keys
..., 1:11, 2:12, 3:13}
In[3]: %timeit [m[_] for _ in l] # list comprehension
1000000 loops, best of 3: 762 ns per loop
In[4]: %timeit map(lambda _: m[_], l) # using 'map'
1000000 loops, best of 3: 1.66 µs per loop
In[5]: %timeit list(m[_] for _ in l) # a generator expression passed to a list constr...
Cartesian product of x and y array points into single array of 2D points
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+100
A canonical cartesian_product (almost)
There are many approaches to this problem with different properties. Some are faster than ot...