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Converting BigDecimal to Integer
...re 100% bet your life on it positive that the number is within the Integer range.
– Snekse
Mar 14 '15 at 20:53
1
...
How to update a plot in matplotlib?
...wever, the shape of the data that you're plotting can't change, and if the range of your data is changing, you'll need to manually reset the x and y axis limits.
To give an example of the second option:
import matplotlib.pyplot as plt
import numpy as np
x = np.linspace(0, 6*np.pi, 100)
y = np.si...
glob exclude pattern
...are only a few special characters: two different wild-cards, and character ranges are supported [from glob].
So you can exclude some files with patterns.
For example to exclude manifests files (files starting with _) with glob, you can use:
files = glob.glob('files_path/[!_]*')
...
Android and setting alpha for (image) view alpha
...se View.setAlpha(float) whose XML counterpart is android:alpha. It takes a range of 0.0 to 1.0 instead of 0 to 255. Use it e.g. like
<ImageView android:alpha="0.4">
However, the latter in available only since API level 11.
...
How to make a background 20% transparent on Android
...e 20%, you know the opaque percentage value is 80% (this is 100-20=80)
The range for the alpha channel is 8 bits (2^8=256), meaning the range goes from 0 to 255.
Project the opaque percentage into the alpha range, that is, multiply the range (255) by the percentage. In this example 255 * 0.8 = 204. ...
Fastest way to check if a value exists in a list
...= []
time_method_set_in = []
time_method_bisect = []
# adjust range down if runtime is to great or up if there are to many zero entries in any of the time_method lists
Nls = [x for x in range(10000, 30000, 1000)]
for N in Nls:
a = [x for x in range(0, N)]
random....
How to convert a double to long without casting?
...gt;= Long.MIN_VALUE);
// we already know its whole and in the Long range
return Double.valueOf(specifiedNumber).longValue();
}
public static boolean isWhole(double specifiedNumber) {
// http://stackoverflow.com/questions/15963895/how-to-check-if-a-double-value-has-no...
Is there a ceiling equivalent of // operator in Python?
...gt;>> from math import ceil
>>> b = 3
>>> for a in range(-7, 8):
... print(["%d/%d" % (a, b), int(ceil(a / b)), -(-a // b)])
...
['-7/3', -2, -2]
['-6/3', -2, -2]
['-5/3', -1, -1]
['-4/3', -1, -1]
['-3/3', -1, -1]
['-2/3', 0, 0]
['-1/3', 0, 0]
['0/3', 0, 0]
['1/3', 1, 1]...
How to validate date with format “mm/dd/yyyy” in JavaScript?
...nt(parts[0], 10);
var year = parseInt(parts[2], 10);
// Check the ranges of month and year
if(year < 1000 || year > 3000 || month == 0 || month > 12)
return false;
var monthLength = [ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 ];
// Adjust for leap years
...
remove None value from a list without removing the 0 value
...nd
>>> L = [0, 23, 234, 89, None, 0, 35, 9]
>>> for i in range(L.count(None)): L.remove(None)
[0, 23, 234, 89, 0, 35, 9, ...]
The first approach (as also suggested by @jamylak, @Raymond Hettinger, and @Dipto) creates a duplicate list in memory, which could be costly of memory for ...