superclass Archives - IT Nursery

Programming, ruby

IT Nursery

Test whether a Ruby class is a subclass of another class

I would like to test whether a class inherits from another class, but there doesn’t seem to exist a method for that. class ...

May 30, 2022
0 Comments

super() raises “TypeError: must be type, not classobj” for new-style class

The following use of super() raises a TypeError: why? >>> from HTMLParser import HTMLParser >>> class TextParser(HTMLParser): ... def __init__(self): ... super(TextParser, self).__init__() ...

May 13, 2022
0 Comments

Why is super.super.method(); not allowed in Java?

I read this question and thought that would easily be solved (not that it isn’t solvable without) if one could write: @Override public ...

May 8, 2022
0 Comments

How to invoke the super constructor in Python?

class A: def __init__(self): print("world") class B(A): def __init__(self): print("hello") B() # output: hello In all other languages I’ve worked with the super ...

May 4, 2022
0 Comments

‘Must Override a Superclass Method’ Errors after importing a project into Eclipse

Anytime I have to re-import my projects into Eclipse (if I reinstalled Eclipse, or changed the location of the projects), almost all of ...

April 13, 2022
0 Comments

implicit super constructor Person() is undefined. Must explicitly invoke another constructor?

If a constructor does not explicitly invoke a superclass constructor, the Java compiler automatically inserts a call to the no-argument constructor of the ...

April 6, 2022
0 Comments

.htaccess (5)
.net (145)
.net-4.0 (2)
.net-core (2)
.net-core-configuration (1)
64-bit (1)
abi (1)
access-modifiers (1)
accessibility (1)
actionscript-3 (1)
active-directory (2)
adsense (1)
agile (1)
ajax (22)
algorithm (88)
amazon-ec2 (4)
amazon-web-services (39)
anaconda (2)
android (1,061)
android-dialogfragment (1)
android-emulator (3)
android-studio (35)
android-xml (1)
angular (139)
angular-cli (3)
angular6 (1)
angularjs (109)
angularjs-timeout (1)
animation (1)
ansible (7)
ant (1)
aop (1)
apache (19)
apache-flex (1)
apache-kafka (4)
apache-spark (6)
apache-zookeeper (1)
api (1)
apple-touch-icon (1)
architecture (13)
archive (1)
arrays (49)
artificial-intelligence (2)
asp-classic (1)
ASP.NET (77)
asp.net-core (3)
asp.net-mvc (60)
asp.net-mvc-2 (1)
asp.net-mvc-3 (6)
asp.net-mvc-4 (2)
asp.net-web-api (3)
assembly (6)
asynchronous (3)
atom-editor (1)
audio (2)
authentication (15)
autocomplete (2)
avd (1)
avmutableaudiomixinputparameters (1)
awk (4)
axios (2)
azure (3)
azure-web-roles (1)
backup (1)
base64 (2)
bash (358)
basic-authentication (1)
batch-file (23)
benchmarking (1)
big-o (1)
binary (2)
binary-tree (1)
bitbucket (1)
bluetooth (1)
bootstrap-4 (2)
bootstrapping (1)
bower (1)
branch (1)
branch-prediction (1)
Browser (7)
buffer (1)
build (3)
Business (3)
button (1)
C (219)
C# (1,430)
c#-4.0 (1)
C++ (676)
c++11 (2)
caching (3)
callback (1)
callstack (1)
captcha (1)
cassandra (1)
casting (1)
centos (2)
certificate (3)
cgi (1)
character-encoding (3)
chart.js (1)
checkbox (1)
class (4)
classpath (1)
client-server (1)
clojure (1)
cloud (1)
cmake (8)
cmd (1)
cocoa (8)
cocoa-touch (2)
cocoapods (1)
code-formatting (2)
coding-style (2)
collections (3)
colors (4)
comet (1)
command (1)
command-line (14)
comments (4)
common-lisp (1)
compare (1)
compilation (1)
compilationunit (1)
compiler-construction (4)
compiler-theory (1)
composer-php (2)
compression (3)
computer-science (2)
concurrency (4)
conditional-operator (1)
configuration (6)
confluence (1)
constants (1)
Consulting (1)
content-security-policy (1)
continuous-integration (2)
cookies (5)
copy (1)
cordova (4)
cors (2)
cpu (1)
cpu-architecture (1)
cqrs (1)
cron (2)
crontab (1)
cross-browser (1)
cryptography (1)
csrf (1)
CSS (382)
css-float (1)
css-selectors (2)
csv (5)
cuda (7)
curl (14)
custom-installation (1)
cx-oracle (1)
cygwin (2)
dapper (1)
dart (9)
data-oriented-design (1)
data-structures (4)
Database (63)
database-design (4)
dataframe (1)
datatable (1)
date (5)
datetime (9)
debian (2)
debugging (14)
default (1)
dependency-injection (4)
deployment (2)
design-patterns (26)
dictionary (10)
didselectrowatindexpath (1)
digital-signature (1)
directory (1)
django (62)
dll (2)
dns (4)
docker (160)
docker-compose (2)
dockerfile (1)
documentation (1)
domain-driven-design (3)
dos (1)
download (3)
duplicates (1)
dynamic-programming (2)
eclipse (66)
ecmascript-6 (1)
editor (5)
elasticsearch (10)
elisp (1)
elixir (1)
emacs (9)
email (8)
embedded-fonts (1)
ember.js (1)
emulation (1)
encoding (4)
encryption (4)
entity-framework (12)
entity-framework-4 (1)
entity-framework-core (1)
enums (2)
environment-variables (1)
erlang (2)
error-handling (1)
escaping (1)
eslint (2)
events (1)
excel (22)
excel-2007 (1)
exception (6)
exception-handling (1)
express (2)
facebook (9)
factory-pattern (1)
favicon (5)
ffmpeg (7)
fiddler (1)
file (20)
file-extension (1)
file-io (2)
filesystems (1)
Finance (1)
find (1)
firebase (7)
fish (1)
fixtures (1)
flash (2)
flexbox (1)
floating-point (4)
flutter (47)
font-size (1)
fonts (7)
for-loop (3)
foreach (1)
form-submit (1)
formatting (4)
forms (11)
frameworks (3)
function (10)
functional-programming (10)
g++ (1)
garbage-collection (1)
gcc (12)
gdata (1)
gdb (6)
gem (1)
generics (2)
geolocation (1)
geometry (2)
git (1,216)
git-bash (1)
git-branch (1)
git-commit (1)
git-merge (1)
github (57)
github-actions (1)
gitlab (4)
gnuplot (1)
go (47)
Google (6)
google-analytics (5)
google-api (3)
google-app-engine (2)
google-chrome (46)
google-chrome-devtools (1)
google-cloud-platform (2)
google-drive-api (1)
google-maps (5)
google-maps-api-3 (1)
google-play-services (1)
google-search (1)
google-sheets (5)
google-voice (1)
gradle (9)
graphics (2)
graphviz (1)
grep (7)
groovy (5)
gruntjs (1)
guid (2)
gulp (2)
gunicorn (1)
gzip (1)
hadoop (3)
handlebars.js (2)
hash (5)
haskell (28)
heroku (5)
hibernate (3)
homebrew (8)
hook (1)
HTML (22)
HTML (600)
html-lists (1)
html5-video (1)
http (75)
http-headers (7)
http-post (1)
https (3)
hungarian-notation (1)
icons (3)
ide (5)
if-statement (4)
iframe (2)
iis (5)
iis-7 (1)
iis-express (1)
image (16)
image-processing (4)
imagemagick (1)
imagenet (1)
import (3)
indentation (1)
indexing (1)
inheritance (3)
innovation (1)
installation (3)
integer (2)
intellij-idea (30)
intellisense (1)
internet-explorer (6)
internet-explorer-8 (1)
internet-explorer-9 (1)
ionic-framework (1)
ios (515)
ios7 (1)
ios8 (1)
ip (2)
iphone (54)
ipython (4)
iterm (2)
jackson (1)
jakarta-ee (1)
Java (3,354)
Java Script (3)
javafx (1)
javascript (2,578)
jenkins (11)
jestjs (5)
jinja2 (2)
jira (1)
jms (2)
jndi (1)
jpa (1)
jquery (279)
jquery-plugins (1)
jquery-ui (1)
jquery-validate (1)
jsf (6)
jshint (1)
json (80)
jsp (5)
junit (1)
jupyter-notebook (1)
jwt (1)
keyboard (2)
keyboard-shortcuts (4)
keystore (2)
keytool (1)
kotlin (15)
kubernetes (13)
lambda (1)
language-agnostic (36)
laravel (21)
latex (8)
layout (2)
licensing (1)
line-breaks (1)
linq (9)
linq-to-sql (3)
lint (1)
linux (338)
lisp (1)
list (6)
listview (1)
localhost (3)
localization (1)
log4j (1)
log4net (1)
logging (9)
logic (1)
loops (3)
lua (1)
lvm (1)
machine-learning (10)
macos (90)
macros (1)
magic-numbers (1)
makefile (21)
malloc (1)
mapreduce (1)
markdown (17)
math (11)
matlab (5)
matplotlib (3)
maven (24)
maven-2 (9)
memory (2)
memory-management (2)
mercurial (9)
merge (1)
methodology (1)
mime-types (2)
mocha.js (1)
model-view-controller (2)
momentjs (1)
mongodb (66)
mousewheel (1)
ms-word (1)
msbuild (2)
multipartform-data (1)
multithreading (19)
mvvm (1)
MySQL (378)
mysqldump (1)
naming-conventions (2)
networking (11)
neural-network (1)
newline (2)
nginx (14)
nhibernate (1)
node-webkit (1)
node.js (292)
nosql (3)
notepad++ (9)
npm (15)
nsstring (2)
nuget (5)
nullable (1)
numbers (1)
oauth (6)
oauth-2.0 (1)
objective-c (104)
odbc (1)
oop (28)
open-source (1)
opengl (3)
openssl (5)
operating-system (2)
operators (1)
optimization (4)
oracle (12)
orm (1)
out-of-memory (1)
outlook (1)
overflow (2)
package (1)
pandas (2)
parallel-processing (1)
parameters (3)
parsing (1)
path (5)
pdf (6)
perforce (1)
performance (25)
perl (13)
permissions (2)
PHP (584)
phpmyadmin (1)
pip (1)
pipenv (1)
playframework (1)
plot (1)
png (1)
podcast (1)
pointers (2)
port (1)
post (5)
postgresql (86)
powershell (51)
process (1)
Programming (21,581)
programming-languages (10)
properties (2)
protocol-buffers (2)
proxy (2)
pthreads (1)
pycharm (1)
Python (2,549)
python-3.x (1)
qt (2)
r (169)
rabbitmq (2)
random (4)
razor (1)
rdf (1)
react-native (7)
react-router-v4 (1)
reactjs (84)
realm (1)
recursion (2)
redirect (3)
redis (14)
reference (1)
regex (100)
replace (2)
request (1)
require (1)
requirejs (1)
requirements (1)
resources (2)
rest (34)
rsync (3)
ruby (182)
ruby-on-rails (181)
ruby-on-rails-3 (6)
ruby-on-rails-3.1 (1)
rubygems (1)
rust (13)
rxjs (2)
sass (3)
sbt (1)
scala (49)
scheduled-tasks (1)
scheme (1)
scope (1)
scripting (7)
scroll (2)
sdk (1)
search (7)
security (32)
sed (5)
select (1)
selenium (5)
selenium-webdriver (1)
seo (2)
serialization (2)
server (1)
server-side (1)
service (1)
servicestack (1)
servlets (1)
session (4)
sftp (1)
sh (2)
share (1)
shell (50)
signals (1)
soa (1)
sockets (6)
software-distribution (1)
solr (1)
sonarqube (1)
sorting (1)
special-characters (1)
spring (22)
spring-boot (1)
spring-mvc (1)
sql (446)
sql-server (157)
sql-server-2005 (2)
sql-server-2008 (5)
sql-server-2012 (1)
sqlite (21)
ssh (20)
ssh-keys (1)
ssl (8)
ssms (2)
stack-trace (1)
statistics (1)
string (61)
string-formatting (1)
struct (1)
subdomain (1)
sublimetext (5)
sublimetext2 (10)
sublimetext3 (1)
svg (7)
svn (42)
swift (74)
swift2 (1)
swiftui (1)
swing (3)
symfony (6)
synchronization (1)
syntax (6)
syntax-highlighting (1)
tabs (3)
task (1)
tcp (3)
telegram (1)
tensorflow (6)
terminal (6)
terminology (9)
testing (8)
text (6)
text-files (1)
text-processing (1)
tfs (4)
themes (3)
theory (2)
time (1)
time-complexity (1)
timezone (1)
tmux (5)
tomcat8 (1)
travis-ci (2)
tsql (6)
turtle-graphics (1)
Tutorial (18)
twig (1)
twitter (1)
twitter-bootstrap (21)
twitter-bootstrap-3 (2)
type-safety (1)
types (4)
typescript (97)
ubuntu (21)
ubuntu-16.04 (1)
uiimage (1)
uikit (1)
uitableview (1)
uiview (1)
uml (3)
Uncategorized (11)
underscore.js (1)
undo (1)
unicode (10)
unit-testing (26)
unix (40)
upload (1)
url (11)
urlencode (1)
urllib (1)
user-agent (1)
user-interface (6)
utf-8 (1)
uuid (1)
vagrant (4)
validation (9)
variables (3)
vb.net (3)
vb6 (1)
vba (4)
vectorization (1)
version-control (11)
versioning (1)
vi (1)
video (6)
view (1)
vim (116)
virtual-machine (1)
virtualbox (3)
visual-c++ (3)
visual-studio (89)
visual-studio-2008 (1)
visual-studio-2010 (14)
visual-studio-2012 (4)
visual-studio-2013 (5)
visual-studio-2015 (4)
visual-studio-code (72)
vue.js (15)
wamp (1)
warnings (1)
wcf (8)
wcf-binding (1)
Web Programming (11)
web-applications (2)
web-services (13)
webpack (5)
webserver (1)
webservice-client (1)
websocket (2)
webstorm (1)
wget (2)
winapi (1)
window (1)
windows (168)
windows-7 (3)
windows-8 (1)
windows-server-2003 (1)
windows-server-2008 (1)
windows-services (5)
windows-vista (1)
wireshark (1)
wix (1)
WordPress (22,083)
wpf (31)
x509 (1)
x86 (2)
xaml (2)
xargs (1)
xcode (62)
xcode4 (1)
xml (37)
xml-parsing (1)
xna (1)
xpath (3)
xslt (4)
yaml (5)
yarnpkg (2)
youtube (1)
zsh (2)