Skip to content

Instantly share code, notes, and snippets.

Avatar

Ayush Bansal bansalayush

  • India
View GitHub Profile
@bansalayush
bansalayush / CloneTest.java
Created Feb 28, 2017
Cloning example and concept
View CloneTest.java
/*
* Cloning creates an exact copy of the object
* While using = as in the example it creates a reference to same memory location but with different name
*/
import java.io.PrintStream;
public class CloneTest {
public static void main(String[] arrstring) throws Exception {
/*t1*/TestClass testClass1 = new TestClass(8798, 540.321);
/*t2*/TestClass testClass2 = (TestClass)testClass1.clone();
@bansalayush
bansalayush / GetImageSize.java
Created Mar 7, 2017
Get size of selected image in bytes
View GetImageSize.java
private void showFileChooser() {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Picture"), 2);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
View left_arrow.xml
<?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="25dp"
android:height="25dp"
android:viewportWidth="490.4"
android:viewportHeight="490.4">
<path
android:fillColor="#000000"
android:pathData="M245.2,490.4c135.2,0,245.2-110,245.2-245.2S380.4,0,245.2,0S0,110,0,245.2C0,380.4,110,490.4,245.2,490.4z
View babelToJS.js
//in babel //in javascript
const arr1 = ['a','b','c']; var arr1 = ['a', 'b', 'c'];
const arr2 = ['d','e','f']; var arr2 = ['d', 'e', 'f'];
var arr3= [...arr1,...arr2]; var arr3 = [].concat(arr1, arr2);
@bansalayush
bansalayush / isTreeBalanced.c
Last active Feb 1, 2019
Calculating height of a Binary Tree :) Check if a tree is balanced or not :)
View isTreeBalanced.c
Diff in left and right height should be less than or equal to 1.
int traverse(node){
if(node == null)
return 0;
int leftHeight = traverse(node->left);
int rightHeight = traverse(node->right);
isBalanced(leftHeight,rightHeight,node);
return max(leftHeight,rightHeight) + 1;
}
@bansalayush
bansalayush / gist:fa6f28235438592d713ce600fe49c305
Created Sep 12, 2018
Install and debug react-native init app without USB!!!!!
View gist:fa6f28235438592d713ce600fe49c305
1) Connect your mobile device via usb (just this once)
2) Establish a port with your mobile device using 'adb tcpip <port number>'.
eg. adb tcpip 5555
3) Remove USB and 'adb connect <mobile device ip><above mentioned port number>' .
Eg . adb connect 192.160.0.124:5555
4) 'React-native run-android' in your project folder
View truecaller-react-native errors
installation -> npm intsall react-native-truecaller --save
linking -> react-native link react-native-truecaller
and on running react-native run-android
we get the following error which points to react-native-truecaller
```
FAILURE: Build failed with an exception.
* Where:
Build file '/Users/ayushbansal/Sites/cybertron/cybertron-starscream/node_modules/react-native-truecaller/android/build.gradle' line: 5
@bansalayush
bansalayush / convertImages.txt
Created Nov 13, 2018
resizing PNG images to use them for iOS development
View convertImages.txt
AppStore supports images of size 40X40, 60X60,58X58, 87X87, 120X120, 180X180 ,1024X1024 and 80X80 (all in pixels).
It might be a tiresome job (for lazy ppl like me ) to resize a given image to above supported formats using Preview.
This is the reason god invented CLI. To avoid pixel-ation of images let's use an 1024X1024 image to be resized . Let's create
8 copies of this image.
Rename the original image to 1024.png
Using the following commands to create multiple copies
cp 1024.png 80.png
cp 1024.png 60.png
cp 1024.png 180.png
View MirrorOfTree.psudocode
Given a Binary Tree, convert it into its mirror.
1 1
/ \ / \
3 2 ====> . 2 . 3
/ \ / \
5 4 4 5
traverse(node){
View repositoryPattern.txt
It gives software developers a mediation layer between the domain of the application and the raw data fetched
from the data source.
Repository pattern is a great idea, and it’s what Store is based on: instead of accessing the network layer directly,
the library should be invoked, giving a wide range of benefits.
One of them is the possibility of persisting the data so that it can be accessed while offline.
This brings us to the next step, the record duration policy: within Store it’s possible to declare how long the data
should persist.
There is control over whether to fetch fresh data when what’s currently on disk is stale, or not.
Store also provides total freedom on how to fetch, parse and persist data, while still giving good defaults.
You can’t perform that action at this time.