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Circle drawing with SVG's arc path
...t left off and using the negative diameter to get back to the original arc start point.
The reason it can't be done as a full circle in one arc (and I'm just speculating) is because you would be telling it to draw an arc from itself (let's say 150,150) to itself (150,150), which it renders as "oh, I...
Greedy vs. Reluctant vs. Possessive Quantifiers
...er tries to match the f following, but the unmatched portion of the string starts with "x" so that doesn't work. So the matcher backtracks, making the non-greedy quantifier match one more character (now it matches the "x", leaving "fooxxxxxxfoo" unmatched). Then it tries to match the f, which succee...
PSQLException: current transaction is aborted, commands ignored until end of transaction block
...sql_insert()
{
try
{
connection.setAutoCommit(false); //start of transaction.
Statement statement = connection.createStatement();
System.out.println("start doing statement.execute");
statement.execute(
"insert into...
Graph Algorithm To Find All Connections Between Two Arbitrary Vertices
...a.util.LinkedList;
public class Search {
private static final String START = "B";
private static final String END = "E";
public static void main(String[] args) {
// this graph is directional
Graph graph = new Graph();
graph.addEdge("A", "B");
graph.addE...
Generate list of all possible permutations of a string
...ing individually. (the variable index in the code below keeps track of the start of the last and the next iteration)
Some pseudocode:
list = originalString.split('')
index = (0,0)
list = [""]
for iteration n in 1 to y:
index = (index[1], len(list))
for string s in list.subset(index[0] to end):...
The first day of the current month in php using date_modify as DateTime object
... give the min and max boundaries for time in the month by doing: $monthStart = date('Y-m-01 00:00:00'); $monthEnd = date('Y-m-t 23:59:59');
– H2ONOCK
Jun 9 '15 at 8:15
...
Rotating a two-dimensional array in Python
...ist slicing. This gives you a "sublist" of the original list described by [start:end:step], start is the first element, end is the last element to be used in the sublist. step says take every step'th element from first to last. Omitted start and end means the slice will be the entire list, and the n...
iOS start Background Thread
I have a small sqlitedb in my iOS device. When a user presses a button, I fetch the data from sqlite & show it to user.
5 A...
Wrapping a C library in Python: C, Cython or ctypes?
...not do that with ctypes. So you have to switch languages at that point and start rewriting parts of your code, potentially reverse engineering your Python/ctypes code into plain C, thus spoiling the whole benefit of writing your code in plain Python in the first place.
With Cython, OTOH, you're com...
How can I multiply all items in a list together with Python?
...we're only dealing with primitives here, you can avoid the minor kludge of starting with 1 by starting with list[0] and iterating over list[1:]. Though getting comfortable with the more functional 'reduce' answers here is valuable in the long term as it's also useful in other circumstances.
...