大约有 47,000 项符合查询结果（耗时：0.0458秒） [XML]
What are the mathematical/computational principles behind this game?
...t 55 is more round number than 57 and left 2 cards out.
We also get n+1 = 8, so from every point (card), 8 lines pass (8 pictures appear) and every line (picture) has 8 points (appears in 8 cards).
Here's a representation of the most famous finite projective (order-2) plane (geometry) with 7 p...
Checking network connection
... urllib2
def internet_on():
try:
urllib2.urlopen('http://216.58.192.142', timeout=1)
return True
except urllib2.URLError as err:
return False
Currently, 216.58.192.142 is one of the IP addresses for google.com. Change http://216.58.192.142 to whatever site can be ...
Parsing JSON array into java.util.List with Gson
...|
edited Jun 27 '17 at 9:48
answered Aug 31 '13 at 11:32
Mi...
How does Duff's device work?
...int count; // Set to 20
{
int n = (count + 7) / 8; // n is now 3. (The "while" is going
// to be run three times.)
switch (count % 8) { // The remainder is 4 (20 modulo 8) so
...
Regular expression to match numbers with or without commas and decimals in text
...ure the whole thing wasn't blank.
Tested here: http://rextester.com/YPG96786
This will allow things like:
100,000
999.999
90.0009
1,000,023.999
0.111
.111
0
It will block things like:
1,1,1.111
000,001.111
999.
0.
111.110000
1.1.1.111
9.909,888
There are several ways to make this regex simpler an...
How to test valid UUID/GUID?
...haracter of the third block).
Therefore to validate a UUID...
/^[0-9a-f]{8}-[0-9a-f]{4}-[0-5][0-9a-f]{3}-[089ab][0-9a-f]{3}-[0-9a-f]{12}$/i
...ensures you have a canonically formatted UUID that is Version 1 through 5 and is the appropriate Variant as per RFC4122.
NOTE: Braces { and } are not ca...
uint8_t vs unsigned char
What is the advantage of using uint8_t over unsigned char in C?
8 Answers
8
...
Find the max of two or more columns with pandas
...
185
You can get the maximum like this:
>>> import pandas as pd
>>> df = pd.DataF...
Generate unique random numbers between 1 and 100
...
For example: To generate 8 unique random numbers and store them to an array, you can simply do this:
var arr = [];
while(arr.length < 8){
var r = Math.floor(Math.random() * 100) + 1;
if(arr.indexOf(r) === -1) arr.push(r);
}
conso...
Delete topic in Kafka 0.8.1.1
I need to delete the topic test in Apache Kafka 0.8.1.1.
14 Answers
14
...