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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...
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)...
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:
...
O(nlogn) Algorithm - Find three evenly spaced ones within binary string
...
1
2
Next
128
...
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 ...
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;
...
Difference between case object and object
... edited Dec 8 '12 at 23:12
axel22
30.7k99 gold badges119119 silver badges134134 bronze badges
answered Mar 11 '11 at 10:28
...
How to print an exception in Python?
How can I print the error/exception in my except: block?
8 Answers
8
...
How can I scale an image in a CSS sprite
...
You can use a combo of zoom for webkit/ie and transform:scale for Firefox(-moz-) and Opera(-o-) for cross-browser desktop & mobile
[class^="icon-"]{
display: inline-block;
background: url('../img/icons/icons.png') no-repeat;
width: 64px;
height: 51px;
overflow: hidden;
...
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...