Tutorial by Examples: an

Deref implementation for Option and wrapper structure

use std::ops::Deref; use std::fmt::Debug; #[derive(Debug)] struct RichOption<T>(Option<T>); // wrapper struct impl<T> Deref for RichOption<T> { type Target = Option<T>; // Our wrapper struct will coerce into Option fn deref(&self) -> &Option...

Rust • Auto-dereferencing

After Submit: Determine whether a field was changed

After the record gets stored in the database, we want to inspect what was changed on the record. We'll do this inspection by comparing values between the old and new record instances. // 1.0, Revealing Module pattern var myNamespace = myNamespace || {}; myNamespace.example = (function () { ...

netsuite • User Event: Before and After Submit events

Reading a String from Standard Input

The STDIN stream in Julia refers to standard input. This can represent either user input, for interactive command-line programs, or input from a file or pipeline that has been redirected into the program. The readline function, when not provided any arguments, will read data from STDIN until a newl...

Julia Language • Input

Reading Numbers from Standard Input

Reading numbers from standard input is a combination of reading strings and parsing such strings as numbers. The parse function is used to parse a string into the desired number type: julia> parse(Int, "17") 17 julia> parse(Float32, "-3e6") -3.0f6 The format expec...

Julia Language • Input

Collect google spreadsheet data into pandas dataframe

Sometimes we need to collect data from google spreadsheets. We can use gspread and oauth2client libraries to collect data from google spreadsheets. Here is a example to collect data: Code: from __future__ import print_function import gspread from oauth2client.client import SignedJwtAssertionCred...

pandas • Reading files into pandas DataFrame

Introduction to Elastic Beanstalk

Elastic Beanstalk (EB) is essentially a hybrid between Golden AMIs and CloudFormation, while vastly simplifying the learning curve of Puppet or Chef. An Elastic Beanstalk deployment is broken down into two components: Application and Environment. Application Consider this your top-level groupin...

amazon-web-services • Elastic Beanstalk

Blue/Green Deployments on Elastic Beanstalk

Blue/Green deployment is a release technique that reduces downtime and risk by running two identical production environments (one called "Blue", the other called "Green"). At any one time, only one of the environments is serving live traffic, while the other is sitting idle. Whe...

amazon-web-services • Elastic Beanstalk

if, else and else if

Powershell supports standard conditional logic operators, much like many programming languages. These allow certain functions or commands to be run under particular circumstances. With an if the commands inside the brackets ({}) are only executed if the conditions inside the if(()) are met $test =...

PowerShell • Conditional logic

Understanding the transpose function: t()

Overview The transpose function is one of Bosun's more powerful functions, but it also takes effort to understand. It is powerful because it lets us alert at different levels than the tag structure of the underlying data. Transpose changes the scope of your alert. This lets you scope things into l...

Bosun • Alerts: Advanced Scoping

Illustration of Basic mapping (Handy shortcuts).

In most text editors, the standard shortcut for saving the current document is Ctrl+S (or Cmd+S on macOS). Vim doesn't have this feature by default but this can be mapped to make things easier. Adding the following lines in .vimrc file will do the job. nnoremap <c-s> :w<CR> inoremap &...

vim • Key Mappings in Vim

Objective C code to convert HTML string to NSAttributedString and Vice Versa

HTML to NSAttributedString conversion Code :- //HTML String NSString *htmlString=[[NSString alloc]initWithFormat:@"<!DOCTYPE html><html><body><h1>My First Heading</h1><p>My first paragraph.</p></body></html>"]; //Converting HTML s...

iOS • Convert HTML to NSAttributed string and vice verse

Using PhantomData as a Type Marker

Using the PhantomData type like this allows you to use a specific type without needing it to be part of the Struct. use std::marker::PhantomData; struct Authenticator<T: GetInstance> { _marker: PhantomData<*const T>, // Using `*const T` indicates that we do not own a T } imp...

Rust • PhantomData

How many units do I have remaining?

In SuiteScript 1.0, use nlobjContext.getRemainingUsage() to retrieve the remaining units. An nlobjContext reference is retrieved using the global nlapiGetContext function. // 1.0 var context = nlapiGetContext(); nlapiLogExecution("DEBUG", "Governance Monitoring", "Remai...

netsuite • Governance

Simple usage for anything that has a Length member

let inline getLength s = (^a: (member Length: _) s) //usage: getLength "Hello World" // or "Hello World" |> getLength // returns 11

F# • Statically Resolved Type Parameters

Drop for Cleanup

use std::ops::Drop; #[derive(Debug)] struct Bar(i32); impl Bar { fn get<'a>(&'a mut self) -> Foo<'a> { let temp = self.0; // Since we will also capture `self` we.. // ..will have to copy the value out first Foo(self, temp) ...

Rust • The Drop Trait - Destructors in Rust

Test for an empty or null string

Empty string Empty string is not null but has zero length: string emptyString = ""; // an empty string is not null... assert(emptyString !is null); // ... but it has zero lenght assert(emptyString.length == 0); Null string string nullString = null; a null string is null (De ...

D Language • Strings

Accessing Google Analytics APIs

You can technically access the Google Analytics APIs using any programing language that can handle a HTTP Post or HTTP Get request. That being said, Google has also created a number of official standard client libraries to help you with this. Using a standard client library for your chosen programm...

google-analytics-api • Getting started with google-analytics-api

Delete Blobs in Blob storage older than a number of days

Here is an example of an Azure Powershell automation runbook that deletes any blobs in an Azure storage container that are older than a number of days. This may be useful for removing old SQL backups to save cost and space. It takes a number of parameters which are self explanatory. Note: I have ...

azure • Azure-Automation

Identifying the Device and Operating

UIDevice *deviceInfo = [UIDevice currentDevice]; NSLog(@"Device Name %@", deviceInfo.name); //Ex: myIphone6s NSLog(@"System Name %@", deviceInfo.systemName); //Device Name iPhone OS NSLog(@"System Version %@", deviceInfo.systemVersion); //System Version 9.3...

iOS • UIDevice

Convert string to ubyte[] and vice versa

String to immutable ubyte[] string s = "unogatto"; immutable(ubyte[]) ustr = cast(immutable(ubyte)[])s; assert(typeof(ustr).stringof == "immutable(ubyte[])"); assert(ustr.length == 8); assert(ustr[0] == 0x75); //u assert(ustr[1] == 0x6e); //n assert(ustr[2] == 0x6f); //o...

D Language • Strings