Tutorial by Examples: an

It is possible to ask a program to execute a specific section of code only if an if statement is considered false. For this, we use the else key word. if(statement) { // Code to execute if the statement is true. } else { // Code to execute if the statement is false. } Both code se...
Expanding the parameter pack of indices in a comma expression with a value creates a copy of the value for each of the indices. Sadly, gcc and clang think the index has no effect and warn about it (gcc can be silenced by casting the index to void): #include <algorithm> #include <array>...
Declaring the splat is useful for reusing sets of parameters multiple times or with slight variations: $splat = @{ Class = "Win32_SystemEnclosure" Property = "Manufacturer" ErrorAction = "Stop" } Get-WmiObject -ComputerName $env:COMPUTERNAME @splat Get...
NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration]; AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration]; NSURL *URL = [NSURL URLWithString:@"http://example.com/upload"]; NSURLRequest *r...
NSMutableURLRequest *request = [[AFHTTPRequestSerializer serializer] multipartFormRequestWithMethod:@"POST" URLString:@"http://example.com/upload" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) { [formData appendPartWithFileURL:[NSURL ...
Below example shows how to change the hyperlink for "ID" and "Title(LinkTitle)" field inside the list view using CSR. Step1 : Create a JS file and paste below code (function () { function registerRenderer() { var ctxForm = {}; ctxForm.Templates = {}...
What is PS1 PS1 denotes Prompt String 1. It is the one of the prompt available in Linux/UNIX shell. When you open your terminal, it will display the content defined in PS1 variable in your bash prompt. In order to add branch name to bash prompt we have to edit the PS1 variable(set value of PS1 in ~...
OS X Download and run the OS X installer. Windows Download and run the Windows installer 32-bit 64-bit. Debian/Ubuntu Run the following to add our apt repository and install the CLI: $ sudo add-apt-repository "deb https://cli-assets.heroku.com/branches/stable/apt ./" $ curl -L https...
One example of machine learning algorithms is the Random Forest alogrithm (Breiman, L. (2001). Random Forests. Machine Learning 45(5), p. 5-32). This algorithm is implemented in R according to Breiman's original Fortran implementation in the randomForest package. Random Forest classifier objects ca...
SELECT item.item_id, ANY_VALUE(uses.tag) tag, COUNT(*) number_of_uses FROM item JOIN uses ON item.item_id, uses.item_id GROUP BY item.item_id shows the rows in a table called item, the count of related rows, and one of the values in the related table called uses. You can th...
Consider the following code: public async Task MethodA() { await MethodB(); // Do other work } public async Task MethodB() { await MethodC(); // Do other work } public async Task MethodC() { // Or await some other async work await Task.Delay(100); } ...
It parses the data from the %%GLOBAL_ConversionCode%% template variable, and as such this script should be inserted in order.html immediately after the %%GLOBAL_ConversionCode%% variable. This was originally intended for the Blueprint theme framework and, as such, may not work on Stencil. <scrip...
This was added to assets/js/theme/category.js in loaded(). You will also need to add {{inject "categoryProducts" category.products}} to templates/pages/category.html var mainImages = []; var rollOvers = []; this.context.categoryProducts.forEach(function(e, i) { if (e.images[0])...
In Coq, destruct more or less corresponds to a case analysis. It is similar to induction except that there's no induction hypothesis. Here is a (admittedly rather trivial) example of this tactic: Require Import Coq.Arith.Lt. Theorem atLeastZero : forall a, 0 <= a. Proof. intros. destr...
from subprocess import check_call ok = check_call(['ffmpeg','-i','input.mp3','output.wav']) if ok: with open('output.wav', 'rb') as f: wav_file = f.read() note: http://superuser.com/questions/507386/why-would-i-choose-libav-over-ffmpeg-or-is-there-even-a-difference What are ...
# from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer # python2 from http.server import BaseHTTPRequestHandler, HTTPServer # python3 class HandleRequests(BaseHTTPRequestHandler): def _set_headers(self): self.send_response(200) self.send_header('Content-type', 'text...
So the main goal of this function is to : Be standalone because it needs to be written in the main VbScript file and cannot be in an included file (because it defines the include function) Provide enough information if something goes wrong (ie. the file that was being included, the error that oc...
import pyglet from pyglet.gl import * win = pyglet.window.Window() glClear(GL_COLOR_BUFFER_BIT) @win.event def on_draw(): glBegin(GL_POINTS) glVertex2f(x, y) #x is desired distance from left side of window, y is desired distance from bottom of window #make as many vertexes as...
Using named ranges allows you to describe the meaning of a cell(s) contents and use this defined name in place of an actual cell address. For example, formula =A5*B5 can be replaced with =Width*Height to make the formula much easier to read and understand. To define a new named range, select cell ...
Create new named range called ‘MyRange’ assigned to cell A1 ThisWorkbook.Names.Add Name:="MyRange", _ RefersTo:=Worksheets("Sheet1").Range("A1") Delete defined named range by name ThisWorkbook.Names("MyRange").Delete Access Named Range by name...

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