This is how the author sets their personal PS1 variable:
gitPS1(){
gitps1=$(git branch 2>/dev/null | grep '*')
gitps1="${gitps1:+ (${gitps1/#\* /})}"
echo "$gitps1"
}
#Please use the below function if you are a mac user
gitPS1ForMac(){
git branch 2> ...
class ImageCreationExample {
static Image createSampleImage() {
// instantiate a new BufferedImage (subclass of Image) instance
BufferedImage img = new BufferedImage(640, 480, BufferedImage.TYPE_INT_ARGB);
//draw something on the image
paintOnI...
public static void saveImage(String destination) throws IOException {
// method implemented in "Creating a simple image Programmatically and displaying it" example
BufferedImage img = createSampleImage();
// ImageIO provides several write methods with different outputs
...
We can just do simple replacement of separators from space to new line, as following example.
echo $sentence | tr " " "\n"
It'll split the value of the variable sentence and show it line by line respectively.
Create a simple DataFrame.
import numpy as np
import pandas as pd
# Set the seed so that the numbers can be reproduced.
np.random.seed(0)
df = pd.DataFrame(np.random.randn(5, 3), columns=list('ABC'))
# Another way to set column names is "columns=['column_1_name','column_2_name','c...
To transfer a file securely to another machine - type:
scp file1.txt tom@server2:$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.
|& connects standard output and standard error of the first command to the second one while | only connects standard output of the first command to the second command.
In this example, the page is downloaded via curl. with -v option curl writes some info on stderr including , the downloaded pag...
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...
String types like UnicodeString, AnsiString, WideString and UTF8String are stored in a memory using their respective encoding (see String Types for more details). Assigning one type of string into another may result in a conversion. Type string is designed to be encoding independent - you should nev...
A for loop iterates from the starting value down to the ending value inclusive, as a "count-down" example.
program CountDown;
{$APPTYPE CONSOLE}
var
i : Integer;
begin
for i := 10 downto 0 do
WriteLn(i);
end.
Output:
10
9
8
7
6
5
4
3
2
1
0
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...
