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How do I concatenate two lists in Python?
...rg Compared to other ways of concatenating lists, for reference please see my benchmarks here.
– cs95
May 7 at 9:00
...
Cluster analysis in R: determine the optimal number of clusters
...can I determine how many clusters are appropriate for a kmeans analysis of my data?, then here are some options. The wikipedia article on determining numbers of clusters has a good review of some of these methods.
First, some reproducible data (the data in the Q are... unclear to me):
n = 100
g = ...
Using PowerShell credentials without being prompted for a password
...string). The following line will prompt for a password then store it in c:\mysecurestring.txt as an encrypted string. You only need to do this once:
read-host -assecurestring | convertfrom-securestring | out-file C:\mysecurestring.txt
Wherever you see a -Credential argument on a PowerShell comman...
How do I save a stream to a file in C#?
... method since .NET 4.
var fileStream = File.Create("C:\\Path\\To\\File");
myOtherObject.InputStream.Seek(0, SeekOrigin.Begin);
myOtherObject.InputStream.CopyTo(fileStream);
fileStream.Close();
Or with the using syntax:
using (var fileStream = File.Create("C:\\Path\\To\\File"))
{
myOtherObjec...
JavaScript closure inside loops – simple practical example
...or (let i = 0; i < 3; i++) {
funcs[i] = function() {
console.log("My value: " + i);
};
}
Beware, though, that IE9-IE11 and Edge prior to Edge 14 support let but get the above wrong (they don't create a new i each time, so all the functions above would log 3 like they would if we used var...
Eclipse - no Java (JRE) / (JDK) … no virtual machine
I am trying to get Eclipse v3.5 (Galileo) to re-run on my computer - I have run it before with no problems, but now I keep getting this error:
...
Load different colorscheme when using vimdiff
...
For console users (like myself), I found 'vividchalk' to be the best colorscheme (out of the default install set) for maintaining contrast between highlighted diffs and highlighted syntax, at least for shell scripts. A close second was 'evening.' ...
Setting Django up to use MySQL
...
MySQL support is simple to add. In your DATABASES dictionary, you will have an entry like this:
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql',
'NAME': 'DB_NAME',
'USER': 'DB_USE...
Firefox ignores option selected=“selected”
...
This is my preference (thanks so much Marco and monkey-wrench, saved a few clumps of my hair there). And you will also have to add it to every <input> with a "value" or "checked" attribute, and any <textarea> with content...
How to detect incoming calls, in an Android device?
...UTGOING_CALL" />
</intent-filter>
</receiver>
My base reusable call detector
package com.gabesechan.android.reusable.receivers;
import java.util.Date;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import andro...