Newbe Dev Stack

Example 1: javascript check if element has class if(document.getElementById("myElmentID").classList.contains("hidden")){ // I have the 'hidden' class } Example 2: js check for class in classList element.classList.contains(className); Example 3: if classlist contains js element.classList.contains(class);

Example: chartJs height var ctx = document . getElementById ( "myChart" ) ; ctx . height = 500 ;

Answer : Try doing: \documentclass[12pt]{article} \usepackage{mathrsfs} \pagestyle{empty} \DeclareMathAlphabet{\mathpzc}{OT1}{pzc}{m}{it} \begin{document} The sample space is $\mathpzc{E}$. \end{document} See The Comprehensive LaTeX Symbol, page 68 for a pretty complete list of math fonts available and how to get to typeset them. You can also check A comprehensive review of mathematics in (La)TeX, page 95 onwards. There's also The LaTeX Font Catalogue - Calligraphic and Handwritten Fonts. You can try rsfs: The code \documentclass[12pt]{article} \usepackage{mathrsfs} \pagestyle{empty} \begin{document} The sample space is $\mathscr E$. \end{document} produces

Example 1: ternary operator python # Program to demonstrate conditional operator a , b = 10 , 20 # Copy value of a in min if a < b else copy b min = a if a < b else b Example 2: ternary operator python # Ternary expression syntax : # value _if_true if condition else value_if_false # # Example : a = True b = "yes" if a else "no" # b will be set to "yes"

Example: flutter padding const Card ( child : Padding ( padding : EdgeInsets . all ( 16.0 ) , child : Text ( 'Hello World!' ) , ) , )

Example: inch to cm 1 inch = 2.54 cm

Answer : Open /opt/lampp/etc/httpd.conf change nobody and nogroup <IfModule unixd_module> # # If you wish httpd to run as a different user or group, you must run # httpd as root initially and it will switch. # # User/Group: The name (or #number) of the user/group to run httpd as. # It is usually good practice to create a dedicated user and group for # running httpd, as with most system services. # User nobody Group nogroup </IfModule> to your username and your group Had the same issue and here is what i did: Run this command to stop xampp: sudo /opt/lampp/lampp stop Open /opt/lampp/etc/httpd.conf Change your_folder to the folder you wanna use DocumentRoot "/home/username/your_folder" <Directory "/home/username/your_folder"> Change User & Group value from daemon to: User nobody Group nogroup set chmod to your_folder with this command sudo chmod 777 /home/username/your_folder Save the file and start xampp wi...

Example: insert column after column mysql ALTER TABLE tbl_name ADD COLUMN new_column_name VARCHAR ( 15 ) AFTER existing_column_name ;

Example 1: image cropper implementation dependencies { api 'com.theartofdev.edmodo:android-image-cropper:2.8.+' } Example 2: image cropper implementation // start picker to get image for cropping and then use the image in cropping activity CropImage.activity() .setGuidelines(CropImageView.Guidelines.ON) .start(this); // start cropping activity for pre-acquired image saved on the device CropImage.activity(imageUri) .start(this); // for fragment (DO NOT use `getActivity()`) CropImage.activity() .start(getContext(), this);

Example 1: bootstarp btn colors <button type= "button" class= "btn btn-primary" > Blue </button> <button type= "button" class= "btn btn-secondary" > Grey </button> <button type= "button" class= "btn btn-success" > Green </button> <button type= "button" class= "btn btn-danger" > Red </button> <button type= "button" class= "btn btn-warning" > Yellow </button> <button type= "button" class= "btn btn-info" >Ligth blue </button> <button type= "button" class= "btn btn-light" > White </button> <button type= "button" class= "btn btn-dark" > Black </button> <button type= "button" class= "btn btn-link" > White with blue text</button> Example 2: bootstrap 4 button <button type= "button...

Answer : Let G G G be reflection of A A A about E F EF EF . Clearly E G = A E = E D EG=AE=ED EG = A E = E D and ∠ G E D = ∠ A E D − ∠ A E F − ∠ F E G = 10 8 ∘ − 2 4 ∘ − 2 4 ∘ = 6 0 ∘ \angle GED = \angle AED - \angle AEF - \angle FEG = 108^\circ - 24^\circ -24^\circ=60^\circ ∠ GE D = ∠ A E D − ∠ A EF − ∠ FEG = 10 8 ∘ − 2 4 ∘ − 2 4 ∘ = 6 0 ∘ . Hence G E D GED GE D is an equilateral triangle. So G D = D E = D C GD=DE=DC G D = D E = D C and ∠ G D C = 4 8 ∘ \angle GDC=48^\circ ∠ G D C = 4 8 ∘ . Hence ∠ D C G = ∠ C G D = 6 6 ∘ \angle DCG=\angle CGD=66^\circ ∠ D CG = ∠ CG D = 6 6 ∘ , ∠ D G E = 6 0 ∘ \angle DGE=60^\circ ∠ D GE = 6 0 ∘ , and ∠ E G F = ∠ F A E = 5 4 ∘ \angle EGF =\angle FAE = 54^\circ ∠ EGF = ∠ F A E = 5 4 ∘ . So angles C G D , D G E , E G F CGD, DGE, EGF CG D , D GE , EGF sum up to 18 0 ∘ 180^\circ 18 0 ∘ . So G G G lies on F C FC FC . So ∠ D C F = 6 6 ∘ \angle DCF = 66^\circ ∠ D CF = 6 6 ∘ and by symmetry ∠ F D C = 6 6 ∘ \angle FDC=66^\circ ∠ F D C = 6 6 ∘ . It foll...

Answer : The main difference between main Ubuntu, Xubuntu, Kubuntu, and Lubuntu is the Desktop Environment. You can install one of these DEs onto your system with the following commands: Ubuntu: sudo apt-get install ubuntu-desktop Kubuntu: sudo apt-get install kubuntu-desktop Xubuntu: sudo apt-get install xubuntu-desktop Lubuntu: sudo apt-get install lubuntu-desktop Ubuntu GNOME: sudo apt-get install ubuntu-gnome-desktop From Ubuntu 17.10 GNOME became the default desktop environment/shell/manager. So if you're running Ubuntu 17.10 forwards (including current 18.04), you can install the default desktop: $ sudo apt install ubuntu-desktop To remove any of these, run the command that you used to install but instead of install say purge (i.e., sudo apt-get purge kubuntu-desktop ). Then you also need to run this command to complete the remove: sudo apt-get autoremove --purge The autoremove command removes all the packages that were installed. The way t...

Example: border color css border : 1 px solid #000000 ;

Answer : You could use the __args__ attribute of Union which holds a tuple of the "possible contents: >>> from typing import Union >>> x = Union[int, str] >>> x.__args__ (int, str) >>> isinstance(3, x.__args__) True >>> isinstance('a', x.__args__) True The __args__ argument is not documented so it could be considered "messing with implementation details" but it seems like a better way than parsing the repr . The existing accepted answer by MSeifert (https://stackoverflow.com/a/45959000/7433423) does not distinguish Union s from other generic types, and it is difficult to determine at runtime whether a type annotation is a Union or some other generic type like Mapping due to the behavior of isinstance() and issubclass() on parameterized Union types. It appears that generic types will have an undocumented __origin__ attribute which will contain a reference to the original generic type used to create ...

Example: mongodb docker docker run - d - p 27017 - 27019 : 27017 - 27019 -- name mongodb mongo : 4.0 .4

Example 1: bootstrap 5 datepicker example < div class = " input-append date " id = " dp3 " data-date = " 12-02-2012 " data-date-format = " dd-mm-yyyy " > < input class = " span2 " size = " 16 " type = " text " value = " 12-02-2012 " > < span class = " add-on " > < i class = " icon-th " > </ i > </ span > </ div > Example 2: bootstrap datetime picker < div class = " container " > < div class = " row " > < div class = ' col-sm-6 ' > < div class = " form-group " > < div class = ' input-group date ' id = ' datetimepicker2 ' > < input type = ' text ' class = " form-control " /> < span class = " input-group-addon " >...