Tutorial by Examples: s

Google maintains documentation on getting started here: https://cloud.google.com/storage/docs/quickstart-console Getting ready to use GCS: Create a Google Cloud project, if you don't have one already. Enable billing for your project to allow buckets to be created. (Optional) Install the Google...

You can make an UILabel with a dynamic height using auto layout. You need to set the numberOfLines to zero (0), and add a minimal height by setting up a constraints with a relation of type .GreaterThanOrEqual on the .Height attribute iOS 6 Swift label.numberOfLines = 0 let heightConstraint = ...

Assumptions: An Oracle JDK has been installed. The JDK was installed to the default directory. Setup steps Open Windows Explorer. In the navigation pane on the left right click on This PC (or Computer for older Windows versions). There is a shorter way without using the explorer in...

The recommended way (Since ES5) is to use Array.prototype.find: let people = [ { name: "bob" }, { name: "john" } ]; let bob = people.find(person => person.name === "bob"); // Or, more verbose let bob = people.find(function(person) { return person.na...

Ruby extends the standard group syntax (...) with a named group, (?<name>...). This allows for extraction by name instead of having to count how many groups you have. name_reg = /h(i|ello), my name is (?<name>.*)/i #i means case insensitive name_input = "Hi, my name is Zaphod Be...

To make express web application modular use router factories: Module: // greet.js const express = require('express'); module.exports = function(options = {}) { // Router factory const router = express.Router(); router.get('/greet', (req, res, next) => { res.end(options....

You can use the reversed function which returns an iterator to the reversed list: In [3]: rev = reversed(numbers) In [4]: rev Out[4]: [9, 8, 7, 6, 5, 4, 3, 2, 1] Note that the list "numbers" remains unchanged by this operation, and remains in the same order it was originally. To r...

After receiving the arguments, you can print them as follows: int main(int argc, char **argv) { for (int i = 1; i < argc; i++) { printf("Argument %d: [%s]\n", i, argv[i]); } } Notes The argv parameter can be also defined as char *argv[]. argv[0] may co...

In Python 3 and higher, print is a function rather than a keyword. print('hello world!') # out: hello world! foo = 1 bar = 'bar' baz = 3.14 print(foo) # out: 1 print(bar) # out: bar print(baz) # out: 3.14 You can also pass a number of parameters to print: print(foo, bar, b...

Good for quick notifications that don't require interaction. Swift let alert = UIAlertController(title: "Toast", message: "Hello World", preferredStyle: .Alert) presentViewController(alert, animated: true) { let delay_s:Double = 2 let delayTime = dispatch_time(DI...

Create a XIB file Xcode Menu Bar > File > New > File. Select iOS, User Interface and then "View": Give your XIB a name (yes, we are doing a Pokemon example 👾). Remember to check your target and hit "Create". Design your view To make things easier, set:...

There are several R packages to read excel files, each of which using different languages or resources, as summarized in the following table: R packageUsesxlsxJavaXLconnectJavaopenxlsxC++readxlC++RODBCODBCgdataPerl For the packages that use Java or ODBC it is important to know details about your s...

The standard doesn't specify if char should be signed or unsigned. Different compilers implement it differently, or might allow to change it using a command line switch.

The following types are defined as integral types: char Signed integer types Unsigned integer types char16_t and char32_t bool wchar_t With the exception of sizeof(char) / sizeof(signed char) / sizeof(unsigned char), which is split between § 3.9.1.1 [basic.fundamental/1] and § 5.3.3.1 [ex...

Background threads cannot modify the UI; almost all UIKit methods must be called on the main thread. From a subclass of NSObject (including any UIViewController or UIView): InvokeOnMainThread(() => { // Call UI methods here }); From a standard C# class: UIApplication.SharedApplicat...

A few modules in the standard library have been renamed: Old nameNew name_winregwinregConfigParserconfigparsercopy_regcopyregQueuequeueSocketServersocketserver_markupbasemarkupbasereprreprlibtest.test_supporttest.supportTkintertkintertkFileDialogtkinter.filedialogurllib / urllib2urllib, urllib.pars...

In general, most of the objects you would interact with as a user would tend to be a vector; e.g numeric vector, logical vector. These objects can only take in a single type of variable (a numeric vector can only have numbers inside it). A list would be able to store any type variable in it, making...

# example data test_sentences <- c("The quick brown fox quickly", "jumps over the lazy dog") Let's make the brown fox red: sub("brown","red", test_sentences) #[1] "The quick red fox quickly" "jumps over the lazy dog" Now, ...

# example data test_sentences <- c("The quick brown fox", "jumps over the lazy dog") Is there a match? grepl() is used to check whether a word or regular expression exists in a string or character vector. The function returns a TRUE/FALSE (or "Boolean") vecto...

2.1.x This example depends on Support Library 23.4.0.+. BottomSheetBehavior is characterized by : Two toolbars with animations that respond to the bottom sheet movements. A FAB that hides when it is near to the "modal toolbar" (the one that appears when you are sliding up). A backdr...