Loops

Loops

Loops are a type of control flow structure in programming in which a series of statements may be executed repeatedly until some condition is met.
Jocelyn  Rempel

Jocelyn Rempel

1637510640

Variables Declaration Example - Data types - Added Subtitles: Kotlin

In this part of the tutorial we will be dealing with the variable declaration and initialization.

#kotlin  #trending  #loops  #courses 

Variables Declaration Example - Data types - Added Subtitles: Kotlin
Jocelyn  Rempel

Jocelyn Rempel

1637503260

For loop usage and declaration example - Added Subtitles: Kotlin

In this part of the tutorial we will see the implementation of for-loop in Kotlin.

#kotlin #trending  #loops  #course 

For loop usage and declaration example - Added Subtitles: Kotlin
Jocelyn  Rempel

Jocelyn Rempel

1637488440

Comparison Operators in Kotlin

In this part of the tutorial we will be dealing with comparison operators.

#kotlin  #trending  #loops  #courses 

Comparison Operators in Kotlin
Jocelyn  Rempel

Jocelyn Rempel

1637481180

Assignment Operator in Kotlin

In this part of the tutorial we will learn about assignment operators in kotlin.

#kotlin  #trends  #loops  #course 

Assignment Operator in Kotlin
Jocelyn  Rempel

Jocelyn Rempel

1637473860

Increment Operator in Kotlin

In this part of the tutorial we will be dealing with the incremental and decremental operators.

#kotlin  #trending  #loops  #course 

Increment Operator in Kotlin
Cleora  Roob

Cleora Roob

1636515240

How Your Javascript Code Works At A Bytecode Level

In this video we will look at how your Javascript code works at a bytecode level.

We look in particular at how for loops, while loops are represented at a byte code level and how they are represented as the same underneath.   Not only we do look at loops but we also look at conditionals such as if statements and ternary operators and how they are represented.

All in all, we use the popular FizzBuzz coding exercise to bring this to life, and we finish it off with a light bit of code golf.

00:00 Introduction
01:17 What is FizzBuzz
02:57 Coding FizzBuzz
09:23 FizzBuzz bytecode
12:09 while loop bytecode
15:20 do loop bytecode
17:25 for loop bytecode without conditionals
20:20 while loop without conditionals and with jump labels bytecode 
25:00 for..in bytecode
28:00 if statement bytecode
36:30 ternary operator
40:00 code golf
43:40 conclusion


This video really focuses on how you can become an Advanced JavaScript developer through focusing on how your source code gets translated into bytecode by the ignition interpreter in the Javascript V8 engine that powers chrome, chromium browsers and nodejs.

This video is beginner friendly.

#javascript #loops 

How Your Javascript Code Works At A Bytecode Level

ループインデックス のPython列挙型

Pythonでコーディングしている場合は、enumerate()関数とafor loop  を使用して、カウンターを使用してiterableの各値を出力できます。

この記事では、Pythonのenumerate()関数をで使用する方法を示しfor loop、独自のインクリメントカウンターを作成するよりも優れたオプションである理由を説明します。

しかし、最初に、enumerate()関数なしでこれを達成する方法を見てみましょう。

Pythonで関数for loopなしでを使用する方法enumerate()

Pythonでは、iterableは、一度に1つの値を繰り返して返すことができるオブジェクトです。反復可能オブジェクトの例には、リスト、タプル、および文字列が含まれます。

この例では、犬の名前のリストとcount。という変数があります。

dogs = ['Harley', 'Phantom', 'Lucky', 'Dingo']
count = 1

を使用for loopしてリストを調べ、それぞれの名前を印刷できます。またcount、リストを繰り返した回数を追跡するために、変数を毎回1ずつインクリメントします。

for name in dogs:
    print(count, name)
    count += 1

これは、結果が画面に印刷されたように見えるものです。

このアプローチは機能しますが、エラーが発生する可能性があります。

よくある間違いは、count変数のインクリメントを忘れることです。

コードを変更した場合、これはコンソールに出力される新しい結果になります。

dogs = ['Harley', 'Phantom', 'Lucky', 'Dingo']
count = 1
for name in dogs:
    print(count, name)

これで、count変数はリストをループした回数を正確に追跡しなくなりました。

count変数を自分でインクリメントする代わりにenumerate()for loop。を使用して関数を使用できます。

enumerate()Pythonの関数は何ですか?

Pythonの組み込みenumerate()関数は、反復可能でオプションの開始引数を取ります。

enumerate(iterable, optional start argument)

オプションのstart引数を省略すると、カウントはゼロに設定されます。

enumerate()関数の戻り値はオブジェクトです。

この関数は反復を追跡するため、count変数を更新することを覚えておく必要はありません。

このenumerate()関数をaとともに使用for loopして、カウンターで反復可能な値を出力できます。

Pythonでfor loopenumerate()関数を使用する方法

この例では、タイムズスクエアからニューヨーク州ニューヨーク市のジュリアード音楽学校までの道順のリストを印刷します。

まず、次のリストを作成する必要がありますdirections

directions = [
    'Head north on Broadway toward W 48th St',
    'Turn left onto W 58th St',
    'Turn right onto 8th Ave',
    'Turn left onto Broadway',
    'Turn left onto Lincoln Center Plaza',
    'Turn right onto Jaffe Dr',
    'Turn left onto Broadway',
    'Turn left onto W 65th St'
]

次に、でfor loop、変数countdirectionループ変数を作成します。

enumerate()機能はになりますdirectionsリストとstart引数。デフォルトの0ではなく1からカウントを開始したいと思います。  

for count, direction in enumerate(directions, start=1):

ループ内で、countおよびdirectionループ変数を出力します。

print(count, direction)

これは、すべてがまとめられたように見えるものです。

directions = [
    'Head north on Broadway toward W 48th St',
    'Turn left onto W 58th St',
    'Turn right onto 8th Ave',
    'Turn left onto Broadway',
    'Turn left onto Lincoln Center Plaza',
    'Turn right onto Jaffe Dr',
    'Turn left onto Broadway',
    'Turn left onto W 65th St'
]

for count, direction in enumerate(directions, start=1):
    print(count, direction)

コンソールでの結果は次のようになります。

ご覧のとおり、count変数はenumerate()関数で自動的に更新されました。

これにより、count変数のインクリメントを忘れた場合にエラーが発生する可能性がなくなります。

結論

enumerate()関数とafor loop  を使用して、カウンターでiterableの各値を出力できます。

このenumerate()関数は、反復可能でオプションの開始引数を取ります。

enumerate(iterable, optional start argument)

オプションのstart引数を省略すると、カウントはゼロに設定されます。

enumerate()関数を使用することは、で独自のインクリメントカウンターを作成するよりも優れた代替手段ですfor loop

このenumerate()関数は自動的にカウントを更新するため、カウンターのインクリメントを忘れる可能性がなくなります。

この記事を楽しんでいただき、Pythonの旅で頑張ってください。

リンク: https://www.freecodecamp.org/

#loops #python 

ループインデックス のPython列挙型
Kennith  Blick

Kennith Blick

1625756820

For Loops in Python - Beginner Python Tutorial #8

Get started with Python!
In this Python tutorial, we will start learning about repetition structures in Python.
You will understand how and when For Loops should be used.
The break and continue statements will also be explained, they are used to control the execution flow of any repetition structure in Python.

Playlist: Beginner Python Tutorials | Video #8
Access the code here: https://github.com/rscorrea1/youtube.git

Timestamp:
00:00 - Video summary
00:26 - For Loops
04:40 - Break statement
06:37 - Continue statement
07:56 - Nested loops
09:33 - Exercise 1: nested loop + break
11:03 - Exercise 2: nested loop + continue statement
12:04 - Wrapping up

Thumbnail:
Photo by Mario Ho on Unsplash

#for loops #python #beginner python tutorial #loops

For Loops in Python - Beginner Python Tutorial #8
Jackson  Watson

Jackson Watson

1625694240

Loops Part 6: Who do Arrays Start at 0? - Live Mentorship Session - Beyond Code Bootcamp

Arrays start at 0 because, historically, they describe electrical circuit addresses, and having 0 electrical connections is a valid mux address.
First in Playlist: https://www.youtube.com/watch?v=EFK1pUCY_Xo&list=PLxki0D-ilnqavEvVuA3_Qnnxrpi__Go6h&index=1&t=5s

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(Learn to Code in 15 Minutes a Day)
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#softwaredevelopment #softwareengineer #webdevelopment #webdeveloper

#loops #arrays #softwareengineer #webdevelopment #webdeveloper

Loops Part 6: Who do Arrays Start at 0? - Live Mentorship Session - Beyond Code Bootcamp
Jackson  Watson

Jackson Watson

1625690580

Loops Part 5: for vs forEach in JavaScript - Beyond Code Bootcamp

You should use forEach in JavaScript, except for when you must use for, except for when you want to reveal hidden, non-enumerable items… ugh.
Next in Playlist: https://www.youtube.com/watch?v=Rfq4Ydx1nvg&list=PLxki0D-ilnqavEvVuA3_Qnnxrpi__Go6h&index=6

Beyond Code:
(Learn to Code in 15 Minutes a Day)
Bootcamp Playlist: https://www.youtube.com/playlist?list=PLxki0D-ilnqZfyo2dZe11ZNGP7RJxJcoA
Subscribe on YouTube: https://youtube.com/channel/UC2KJHARTj6KRpKzLU1sVxBA
Join on Facebook: https://fb.com/beyondcodebootcamp
Follow on Twitter: https://twitter.com/@_beyondcode

AJ’s Live Streams:
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(My Morning Shower Thoughts as a Daily Lifestyle Vlog)
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#softwaredevelopment #softwareengineer #webdevelopment #webdeveloper

#loops #javascript #foreach #for #webdevelopment #webdeveloper

Loops Part 5: for vs forEach in JavaScript - Beyond Code Bootcamp
Jackson  Watson

Jackson Watson

1625686860

Loops Part 3: Transform Arrays (Map, Pluck, etc) - Beyond Code Bootcamp

The purpose of looping over an array is generally to transform it in some way (or fire off an event). Here we explore both the built-in map and a manual counterpart to do a “pluck” of specific items.
Next in Playlist: https://www.youtube.com/watch?v=fAuqsDvofxw&list=PLxki0D-ilnqavEvVuA3_Qnnxrpi__Go6h&index=5

Beyond Code:
(Learn to Code in 15 Minutes a Day)
Bootcamp Playlist: https://www.youtube.com/playlist?list=PLxki0D-ilnqZfyo2dZe11ZNGP7RJxJcoA
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AJ’s Live Streams:
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#softwaredevelopment #softwareengineer #webdevelopment #webdeveloper

#loops #arrays #map #etc #webdeveloper #webdevelopment

Loops Part 3: Transform Arrays (Map, Pluck, etc) - Beyond Code Bootcamp
Jackson  Watson

Jackson Watson

1625683200

Loops Part 2: Block Scope - Live Mentorship Session - Beyond Code Bootcamp

JavaScript is a “Block Scope” language. This affects loop blocks, and the effect is different between let and var.
Next in Playlist: https://www.youtube.com/watch?v=cBveSaXgD3A&list=PLxki0D-ilnqavEvVuA3_Qnnxrpi__Go6h&index=4

Beyond Code:
(Learn to Code in 15 Minutes a Day)
Bootcamp Playlist: https://www.youtube.com/playlist?list=PLxki0D-ilnqZfyo2dZe11ZNGP7RJxJcoA
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AJ’s Live Streams:
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#softwaredevelopment #softwareengineer #webdevelopment #webdeveloper

#block scope #loops #softwareengineer #webdevelopment #webdeveloper #javascript

Loops Part 2: Block Scope - Live Mentorship Session - Beyond Code Bootcamp
Jackson  Watson

Jackson Watson

1625683140

Loops Part 1: "Loop" vs "For Loop" - Live Mentorship Session - Beyond Code Bootcamp

We break down and break apart the typical C-style for loop into as a plain (i.e. non-for) loop with an initializer, check, and last statement, and reconstruct it back into a loop.
Next in Playlist: https://www.youtube.com/watch?v=bSBNleLN74c&list=PLxki0D-ilnqavEvVuA3_Qnnxrpi__Go6h&index=2

Beyond Code:
(Learn to Code in 15 Minutes a Day)
Bootcamp Playlist: https://www.youtube.com/playlist?list=PLxki0D-ilnqZfyo2dZe11ZNGP7RJxJcoA
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AJ’s Live Streams:
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Health, Wealth, Commitment
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#softwaredevelopment #softwareengineer #webdevelopment #webdeveloper

#loops #softwaredevelopment #softwareengineer #for loop #webdeveloper #webdevelopment

Loops Part 1: "Loop" vs "For Loop" - Live Mentorship Session - Beyond Code Bootcamp
Jackson  Watson

Jackson Watson

1625660940

Practical Bash: Variables and For Loops in Scripts - Beyond Code Live 009

Using variables and loops we can write scripts that work on a large set of files without writing it all out by hand.

Beyond Code:
(Learn to Code in 15 Minutes a Day)
Bootcamp Playlist: https://www.youtube.com/playlist?list=PLxki0D-ilnqZfyo2dZe11ZNGP7RJxJcoA
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AJ’s Live Streams:
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#softwaredevelopment #softwareengineer #webdevelopment #webdeveloper

https://youtu.be/cp6KJKBZq50

#bash #practical bash #loops #scripts #variables and for loops in scripts #webdeveloper

Practical Bash: Variables and For Loops in Scripts - Beyond Code Live 009
Jackson  Watson

Jackson Watson

1625622105

Loops Part 4: for vs forEach (c-style vs functional) - Beyond Code Bootcamp

The purpose of looping over an array is generally to transform it in some way (or fire off an event). Here we explore both the built-in map and a manual counterpart to do a “pluck” of specific items.
Next in Playlist: https://www.youtube.com/watch?v=dItj0-WKKCs&list=PLxki0D-ilnqavEvVuA3_Qnnxrpi__Go6h&index=5

Beyond Code:
(Learn to Code in 15 Minutes a Day)
Bootcamp Playlist: https://www.youtube.com/playlist?list=PLxki0D-ilnqZfyo2dZe11ZNGP7RJxJcoA
Subscribe on YouTube: https://youtube.com/channel/UC2KJHARTj6KRpKzLU1sVxBA
Join on Facebook: https://fb.com/beyondcodebootcamp
Follow on Twitter: https://twitter.com/@_beyondcode

AJ’s Live Streams:
Watch on Twitch: https://twitch.tv/coolaj86
Watch on Facebook: https://facebook.com/coolaj86
Subscribe on YouTube: https://youtube.com/coolaj86

Health, Wealth, Commitment
(My Morning Shower Thoughts as a Daily Lifestyle Vlog)
Join on Facebook: https://www.facebook.com/groups/5406824179391158
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#softwaredevelopment #softwareengineer #webdevelopment #webdeveloper

#loops #foreach #c-style #functional #webdeveloper

Loops Part 4: for vs forEach (c-style vs functional) - Beyond Code Bootcamp