There are three ways to quote something using a Julia function:
julia> QuoteNode(:x)
:(:x)
julia> Meta.quot(:x)
:(:x)
julia> Expr(:quote, :x)
:(:x)
What does "quoting" mean, and what is it good for? Quoting allows us to protect expressions from being interpreted as sp...
This is a contrived sample. It sorts records based on an ALPHABET that has upper and lower case characters together, with A and a swapped compared to the other letters. This was done on purpose to demonstrate the possibilities. The SORT algorithm reader retrieves records using RELEASE in the INPU...
This is a seedwork sample. The SORT OUTPUT PROCEDURE could manipulate the sorted records before they are returned to the write portion of the internal COBOL sort algorithm. In this case, no transformation is done, work-rec is directly moved to out-rec.
GCobol >>SOURCE FORMAT IS FIXED
...
You may want to read a DataFrame from a CSV (Comma separated values) file or maybe even from a TSV or WSV (tabs and whitespace separated files). If your file has the right extension, you can use the readtable function to read in the dataframe:
readtable("dataset.CSV")
But what if your ...
Data sets often contain comments that explain the data format or contain the license and usage terms. You usually want to ignore these lines when you read in the DataFrame.
The readtable function assumes that comment lines begin with the '#' character. However, your file may use comment marks like ...
Assuming you have a model that looks like the following, we will get up an running with a simple barebones read-only API driven by Django REST Framework ("DRF").
models.py
class FeedItem(models.Model):
title = models.CharField(max_length=100, blank=True)
url = models.URLField(b...
For Navigate to any url :
driver.navigate().to("http://www.example.com");
For move backwards :
driver.navigate().back();
For move forwards :
driver.navigate().forward();
For refresh the page :
driver.navigate().refresh();
To separate API logic from the component, we are creating the API client as a separate class. This example class makes a request to Wikipedia API to get random wiki articles.
import { Http, Response } from '@angular/http';
import { Injectable } from '@angular/core';
import { Observabl...
Since defining all of the authorization logic in the AuthServiceProvider could become cumbersome in large applications, Laravel allows you to split your authorization logic into "Policy" classes. Policies are plain PHP classes that group authorization logic based on the resource they autho...
with Ada.Text_IO; use Ada.Text_IO;
procedure Main is
task My_Task;
task body My_Task is
begin
Put_Line ("Hello from My_Task");
end;
begin
Put_Line ("Hello from Main");
end;
Result
The order of Put_Line can vary.
Hello from My_Task
Hello from ...
with Ada.Text_IO; use Ada.Text_IO;
procedure Main is
task My_Task;
task body My_Task is
begin
for I in 1 .. 4 loop
Put_Line ("Hello from My_Task");
end loop;
end;
begin
Put_Line ("Hello from Main");
end;
Result
The order of Put...
with Ada.Text_IO; use Ada.Text_IO;
procedure Main is
task My_Task;
task body My_Task is
begin
for I in 1 .. 4 loop
Put_Line ("Hello from My_Task");
end loop;
end;
begin
for I in 1 .. 4 loop
Put_Line ("Hello from Main");
e...
with Ada.Text_IO; use Ada.Text_IO;
procedure Main is
task My_Task_1;
task My_Task_2;
task body My_Task_1 is
begin
for I in 1 .. 4 loop
Put_Line ("Hello from My_Task_1");
end loop;
end;
task body My_Task_2 is
begin
for ...
a = [1, 2, 3, 4, 5]
# steps through the list backwards (step=-1)
b = a[::-1]
# built-in list method to reverse 'a'
a.reverse()
if a = b:
print(True)
print(b)
# Output:
# True
# [5, 4, 3, 2, 1]
def shift_list(array, s):
"""Shifts the elements of a list to the left or right.
Args:
array - the list to shift
s - the amount to shift the list ('+': right-shift, '-': left-shift)
Returns:
shifted_array - the shifted list
"&quo...
One drawback of creating private method in Javascript is memory-inefficient because a copy of the private method will be created every time a new instance is created. See this simple example.
function contact(first, last) {
this.firstName = first;
this.lastName = last;
this.mobile;
...
select owner, table_name
from all_tables
ALL_TAB_COLUMNS describes the columns of the tables, views, and clusters accessible to the current user. COLS is a synonym for USER_TAB_COLUMNS.
select *
from all_tab_columns
where table_name = :tname
All roles granted to user.
select *
from dba_role_privs
where grantee= :username
Privileges granted to user:
system privileges
select *
from dba_sys_privs
where grantee = :username
object grants
select *
from dba_tab_privs
where grantee = :username
Permissions grante...
