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What's the point of map in Haskell, when there is fmap?
...ical purposes has been part of the Haskell community since before Haskell existed, cf. A History of Haskell, so the comment in question is not in any way second-hand hearsay!
– C. A. McCann
Jul 26 '11 at 21:37
...
.NET console application as Windows service
...t which could run as console application or as windows service if run for example from command line using switches.
10 Ans...
What is the most efficient way to concatenate N arrays?
...e way to go for convenience and likely performance.
var a = [1, 2], b = ["x", "y"], c = [true, false];
var d = a.concat(b, c);
console.log(d); // [1, 2, "x", "y", true, false];
For concatenating just two arrays, the fact that push accepts multiple arguments consisting of elements to add to the ar...
How to save all the variables in the current python session?
...ew
for key in dir():
try:
my_shelf[key] = globals()[key]
except TypeError:
#
# __builtins__, my_shelf, and imported modules can not be shelved.
#
print('ERROR shelving: {0}'.format(key))
my_shelf.close()
To restore:
my_shelf = shelve.open(filename)...
O(nlogn) Algorithm - Find three evenly spaced ones within binary string
...
1
2
Next
128
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psql: could not connect to server: No such file or directory (Mac OS X)
...atabase. (PostgreSQL should delete it automatically if the postmaster has exited.).
SOLUTION: This fixed the issue--I deleted this file, and then everything worked!
/usr/local/var/postgres/postmaster.pid
--
and here is how I figured out why this needed to be deleted.
I used the following com...
Android Camera Preview Stretched
...
Camera.Size optimalSize = null;
double minDiff = Double.MAX_VALUE;
int targetHeight = h;
for (Camera.Size size : sizes) {
double ratio = (double) size.width / size.height;
if (Math.abs(ratio - targetRatio) > ASPECT_TOLERANCE) continue;
...
How to handle invalid SSL certificates with Apache HttpClient? [duplicate]
...st managers.
You'll need to one of the following:
Configure the SSLContext with a TrustManager that accepts any cert (see below)
Configure the SSLContext with an appropriate trust store that includes your cert
Add the cert for that site to the default java trust store.
Here is a sample program ...
NodeJS: How to get the server's port?
You often see example hello world code for Node that creates an Http Server, starts listening on a port, then followed by something along the lines of:
...
Best way to represent a fraction in Java?
...and a zero-denominator is impossible).
*/
public final class BigFraction extends Number implements Comparable<BigFraction>
{
private static final long serialVersionUID = 1L; //because Number is Serializable
private final BigInteger numerator;
private final BigInteger denominator;
pub...