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How to use a switch case 'or' in PHP
...ng with large cases ... imagine 1 to 100 this would work perfectly
$r1 = range(1, 100);
$r2 = range(100, 200);
$v = 76;
switch (true) {
case in_array($v, $r1) :
echo 'the value is in range 1 to 100';
break;
case in_array($v, $r2) :
echo 'the value is in range 100 to...
pyplot scatter plot marker size
...e width of markers
x = [0,2,4,6,8,10]
y = [0]*len(x)
s = [20*4**n for n in range(len(x))]
plt.scatter(x,y,s=s)
plt.show()
gives
Notice how the size increases very quickly. If instead we have
# doubling the area of markers
x = [0,2,4,6,8,10]
y = [0]*len(x)
s = [20*2**n for n in range(len(x))]
p...
Double vs. BigDecimal?
...l is part of the Java language and is useful for a variety of applications ranging from the financial to the scientific (that's where sort of am).
There's nothing wrong with using doubles for certain calculations. Suppose, however, you wanted to calculate Math.Pi * Math.Pi / 6, that is, the value o...
How to read a file in reverse order?
... yield segment
segment = lines[0]
for index in range(len(lines) - 1, 0, -1):
if lines[index]:
yield lines[index]
# Don't yield None if the file was empty
if segment is not None:
yield segment
...
Numpy: find first index of value fast
..."""return the index of the first occurence of item in vec"""
for i in xrange(len(vec)):
if item == vec[i]:
return i
return -1
and then:
>>> a = array([1,7,8,32])
>>> find_first(8,a)
2
...
Set UILabel line spacing
...[attrString addAttribute:NSParagraphStyleAttributeName
value:style
range:NSMakeRange(0, strLength)];
uiLabel.attributedText = attrString;
NSAttributedString's old attributedStringWithString did the same thing, but now that is being deprecated.
For historical reasons, here's my original an...
How can I limit possible inputs in a HTML5 “number” element?
...ax="999" />
if you add both a max and a min value you can specify the range of allowed values:
<input type="number" min="1" max="999" />
The above will still not stop a user from manually entering a value outside of the specified range. Instead he will be displayed a popup telling him ...
Converting string to byte array in C#
... This will fail for characters that fall into the surrogate pair range.. GetBytes will have a byte array that misses one normal char per surrogate pair off the end. The GetString will have empty chars at the end. The only way it would work is if microsoft's default were UTF32, or if char...
Does IMDB provide an API? [closed]
...ptimusCrime I had an issue the other day with IP's from the 85.XXX.XXX.XXX range and had to temporarily block ALL of them until I could get things under control. Sadly this is one of the trade-offs I have to deal with by not requiring API keys, people tend to just abuse the hell out of it.
...
Java HashMap performance optimization / alternative
...g lengths, from 1 to 10,000, and are fairly evenly distributed across that range, that this could be a very good hash function. But if your strings are all 1 or 2 characters, this would be a very bad hash function.
Edit: I should add: Every time you add a new entry, HashMap checks if this is a dupl...