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Making heatmap from pandas DataFrame
...to_bins(index):
"""Calculate bins to contain the index values.
The start and end bin boundaries are linearly extrapolated from
the two first and last values. The middle bin boundaries are
midpoints.
Example 1: [0, 1] -> [-0.5, 0.5, 1.5]
Example 2: [0, 1, 4] -> [-0.5,...
I ran into a merge conflict. How can I abort the merge?
... --abort.
As always, make sure you have no uncommitted changes before you start a merge.
From the git merge man page
git merge --abort is equivalent to git reset --merge when MERGE_HEAD is present.
MERGE_HEAD is present when a merge is in progress.
Also, regarding uncommitted changes when start...
Virtual Memory Usage from Java under Linux, too much memory used
...4-linux-gnu/libc-2.13.so
...
A quick explanation of the format: each row starts with the virtual memory address of the segment. This is followed by the segment size, permissions, and the source of the segment. This last item is either a file or "anon", which indicates a block of memory allocated v...
No connection could be made because the target machine actively refused it?
... networking issues unlikly. What is very likly is that the web service has started up more slowly than the client application while testing. Still adding retry logic is defintely the way to go.
– Martin Brown
Mar 8 '12 at 9:42
...
How to get first character of string?
...overflow";
console.log(str.charAt(0));
Second : string.substring(start,length);
Return the substring in the string who start at the index start and stop after the length length
Here you only want the first caract so : start = 0 and length = 1
var str = "Stack overflow";
conso...
Alarm Manager Example
... {
super.onCreate();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId)
{
alarm.setAlarm(this);
return START_STICKY;
}
@Override
public void onStart(Intent intent, int startId)
{
alarm.setAlarm...
Good tutorials on XMPP? [closed]
...prisingly the open-source projects assume you know these things before you start digging into the code.
7 Answers
...
Why does i = i + i give me 0?
...e to integer overflow.
In 32-bit twos-complement arithmetic:
i does indeed start out having power-of-two values, but then overflow behaviors start once you get to 230:
230 + 230 = -231
-231 + -231 = 0
...in int arithmetic, since it's essentially arithmetic mod 2^32.
...
How to enter in a Docker container already running with a new TTY
...update the /etc/default/docker file with the '-e lxc' to the docker daemon startup option before restarting the daemon (I did this by rebooting the host).
This is all because...
...it [docker 0.9] contains a new "engine driver" abstraction to make possible the use
of other API than LXC to ...
How do I remove a property from a JavaScript object?
...ments and reallocating memory: Array#splice() and Array#pop.
Array#splice(start[, deleteCount[, item1[, item2[, ...]]]])
Array#splice mutates the array, and returns any removed indices. deleteCount elements are removed from index start, and item1, item2... itemN are inserted into the array from in...