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How to work with complex numbers in C?
...introduced in mathematics, from the need of calculating negative quadratic roots. Complex number concept was taken by a variety of engineering fields.
Today that complex numbers are widely used in advanced engineering domains such as physics, electronics, mechanics, astronomy, etc...
Real and imag...
Python error “ImportError: No module named”
...at was affecting it was that I had another Python version installed by the root, so if someone is working with a local installation of python, be sure that the Python installation that is running the programs is the local Python. To check this, just do which python, and see if the executable is the ...
mysql update column with value from another table
I have two tables, both looking like
8 Answers
8
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How to solve “Could not establish trust relationship for the SSL/TLS secure channel with authority”
...ient (bad move, man in the
middle attacks abound)
use makecert to create a root CA and
create certificates from that (ok
move, but there is still no CRL)
create an internal root CA using
Windows Certificate Server or other
PKI solution then trust that root
cert (a bit of a pain to manage)
purchase ...
How to programmatically take a screenshot on Android?
...eate bitmap screen capture
View v1 = getWindow().getDecorView().getRootView();
v1.setDrawingCacheEnabled(true);
Bitmap bitmap = Bitmap.createBitmap(v1.getDrawingCache());
v1.setDrawingCacheEnabled(false);
File imageFile = new File(mPath);
FileOutputS...
Using DISTINCT and COUNT together in a MySQL Query
Is something like this possible:
7 Answers
7
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What is the difference between single and double quotes in SQL?
...ct_id
SELECT PRODUCT.id 'product_id'
Either works in Oracle, SQL Server, MySQL… but I know some have said that the TOAD IDE seems to give some grief when using the single quotes approach.
You do have to use single quotes when the column alias includes a space character, e.g., product id, but it...
Copy file or directories recursively in Python
...of copying files and folders recursively. (Python 3.X)
import os, shutil
root_src_dir = r'C:\MyMusic' #Path/Location of the source directory
root_dst_dir = 'D:MusicBackUp' #Path to the destination folder
for src_dir, dirs, files in os.walk(root_src_dir):
dst_dir = src_dir.replace(root_src...
MongoDB or CouchDB - fit for production? [closed]
...
We are running CouchDB as a replacemant for MySQL for our shops (70.0000 items/shop, a total of 4 million attributes of all items, cross connections between items).
Our goals were:
Easy replication from a master-db to several clients with different documents.
Fast p...
How to get ER model of database from server with Workbench
...y to get an ER model of a database from the server that is connected to my MySQL Workbench?
4 Answers
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