Create a simple DataFrame.
import numpy as np
import pandas as pd
# Set the seed so that the numbers can be reproduced.
np.random.seed(0)
df = pd.DataFrame(np.random.randn(5, 3), columns=list('ABC'))
# Another way to set column names is "columns=['column_1_name','column_2_name','c...
To transfer a file securely to another machine - type:
scp file1.txt tom@server2:$HOME
This example presents transferring file1.txt from our host to server2's user tom's home directory.
scp can also be used to transfer multiple files from one server to another. Below is example of transferring all files from my_folder directory with extension .txt to server2. In Below example all files will be transferred to user tom home directory.
scp /my_folder/*.txt tom@server2:$HOME
To download a file from remote server to the local machine - type:
scp tom@server2:$HOME/file.txt /local/machine/path/
This example shows how to download the file named file.txt from user tom's home directory to our local machine's current directory.
There is a mantra that some Java experts are wont to recite:
"Exceptions should only be used for exceptional cases."
(For example: http://programmers.stackexchange.com/questions/184654 )
The essence of this is that is it is a bad idea (in Java) to use exceptions and exception handli...
Use same UIImage with multiple theme base app by just applying UIColor to UIImage instance as following.
// *** Create an UIImage instance with RenderingMode AlwaysTemplate ***
UIImage *imgMenu = [[UIImage imageNamed:@"iconMenu"] imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate]...
Internal Table Declaration Based on Local Type Definition
" Declaration of type
TYPES: BEGIN OF ty_flightb,
id TYPE fl_id,
dat TYPE fl_date,
seatno TYPE fl_seatno,
firstname TYPE fl_fname,
lastname TYPE fl_lname,
fl...
Read, write and insert into internal tables with a header line:
" Read from table with header (using a loop):
LOOP AT i_compc_all. " Loop over table i_compc_all and assign header line
CASE i_compc_all-ftype. " Read cell ftype from header line from table i_com...
In order to avoid a divide by zero with a numberSet (what you get after a reduction like avg()) you can short-circuit the logic:
$five = min(q("sum:rate{counter,,1}:haproxy.frontend.hrsp{}{status_code=5xx}", "1h", ""))
$two = avg(q("sum:rate{counter,,1}:haproxy.f...
With series operations, things are dropped from the left side if there is no corresponding timestamp/datapoint in the right side. You can mix this with the dropbool function to avoid divide by zero:
$five = q("sum:rate{counter,,1}:haproxy.frontend.hrsp{}{status_code=5xx}", "1h",...
Creating a WebM video from canvas frames and playing in canvas, or upload, or downloading.
Example capture and play canvas
name = "CanvasCapture"; // Placed into the Mux and Write Application Name fields of the WebM header
quality = 0.7; // good quality 1 Best < 0.7 ok to poor
fps =...
The ServiceLoader is a simple and easy to use built-in mechanism for dynamic loading of interface implementations. With the service loader - providing means for instantation (but not the wiring) - a simple dependency injection mechanism can be built in Java SE.
With the ServiceLoader interface and ...
As shown in the step by step guide (getting started with Amazon Redshift),it involves :
Step 1: Set Up Prerequisites
Step 2: Launch a Sample Amazon Redshift Cluster
Step 3: Authorize Access to the Cluster
Step 4: Connect to the Sample Cluster
Setting Up Prerequisites
Sett...
There are following setups to install opencart on your webserver
Download the latest version of opencart for the official website or github and extract the files. In extracted files you can see the upload folder, license.txt file and readme.txt file
The upload folder contains all the files to...
NSIS installer can be downloaded from http://nsis.sourceforge.net/Download.
An exe of 1.6 MB will be downloaded. You can install it using the wizard.
While installing there are options to install
1. Full: Installs all the components
2. Lite: Basic and only essential components from the UI
3. Mi...
