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:not(:empty) CSS selector is not working?
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edited Aug 22 '17 at 4:52
answered Dec 26 '11 at 21:43
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How to convert / cast long to String?
...ing.valueOf(date);
If your Long might be null and you don't want to get a 4-letter "null" string, you might use Objects.toString, like: String s = Objects.toString(date, null);
EDIT:
You reverse it using Long l = Long.valueOf(s); but in this direction you need to catch NumberFormatException
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Restoring MySQL database from physical files
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edited Jul 25 '15 at 20:24
Benoit Duffez
9,1201010 gold badges6565 silver badges113113 bronze badges
an...
Why implement interface explicitly?
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146
If you implement two interfaces, both with the same method and different implementations, then ...
Pointer to pointer clarification
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143
Forget for a second about the pointing analogy. What a pointer really contains is a memory add...
What is in your Mathematica tool bag? [closed]
...e one liner:
SelectEquivalents[hamlst,
#[[;; 3]] &,
#[[{4, 5}]] -> (Complex @@ #[[6 ;;]]) &,
{#1, SparseArray[#2]} &]
Honestly, this is my Swiss Army Knife, and it makes complex things very simple. Most of my other tools are somewhat domain specific, so I'll p...
Evenly distributing n points on a sphere
...answer here (and using Python):
> cat ll.py
from math import asin
nx = 4; ny = 5
for x in range(nx):
lon = 360 * ((x+0.5) / nx)
for y in range(ny):
midpt = (y+0.5) / ny
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Check whether HTML element has scrollbars
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Limon Monte
40.4k4040 gold badges151151 silver badges183183 bronze badges
answered Feb 18 '11 at 6:18
jzhingajzhi...
What is “entropy and information gain”?
... f
Brian 0 2 5 m
Caroline 1 4 8 f
David 0 2 5 m
The goal is to build a decision tree. An example of a tree would be:
length<7
| num-vowels<3: male
| num-vowels>=3
| | ends-vowel=1: fe...
Unicode character as bullet for list-item in CSS
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edited Jul 7 '17 at 16:43
answered Jul 8 '10 at 14:46
ag...