inline, noinline, crossinline — What do they mean?
Aug 8, 2017 · 3 min read
I found Kotlin interesting and I’ve started to carefully migrate my Android codebase to Kotlin. You see, I’ve been a Java programmer since I can remember and I’ve not for anytime in my life used the keyword volatile. I don’t know what it does, I’ve seen it in some weird APIs but I’ve not been bothered with it. I have refused to bring that behavior to Kotlin.
You see, I’ve been running into t h e inline keyword a lot lately. And on rare occasions, I’ve stumbled on noinline and crossinline too. I don’t want them to be the new volatile . I went through the inline functions docs, it gave a high level explanation on the keywords. I am not usually satisfied with API docs from the API providers and so I found this stackoverflow question. This made me to research more and I here’s what I’ve found:
Inline
This explanation was inspired by this answer .
Say you have a higher order function in Kotlin,
Here’s a cleaned up version of how the kotlin code will look like when it’s converted to Java:
This means that anytime you use the higher order function in your kotlin code, the Java translated code will end up looking something like this:
Imagine calling this lambda in a loop. You’ll end up creating N Function objects.
adding the inline keyword in your higher order function will prevent such. You’ll end up having your lambda’s code and the higher order function’s code inlined at the calling site.
Now after adding the inline keyword, when your code is translated to Java, it will look something like this:
Now, you’ll be tempted to add the inline keyword to all your higher order functions. With inline functions, you will not be able to access private members/methods of your enclosing class. You will need to make those members/methods internal and then annotate them with @PublishedApi .
Also, when using inline functions, you will be able to return from the lambda which in turn will return from the calling function. This is usually called non-local control flow.
Noinline
This one is easy.
Say you have multiple lambdas in your inlined function and you don’t want all of them to be inlined, you can mark the lambdas you don’t want to be inlined with the noinline keyword:
Note that noinline lambdas do not support non-local control flow, i.e you won’t be able to propagate your return to the calling function.
Crossinline
The crossinline marker is used to mark lambdas that mustn’t allow non-local returns, especially when such lambda is passed to another execution context such as a higher order function that is not inlined, a local object or a nested function. In other words, you won’t be able to do a return in such lambdas.
That’s all folks. Now let us move on to the next keyword.
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What do mean by android development?
Humans’ growing dependence on mobile phones highlights the very fact that seamless, fast, versatile, and up-to-date applications for the sleek functioning of our everyday tasks square measure the necessity of the hour. The pandemic evoked varied changes in our fashion, brought dynamic work-from-home culture, and altered educational methodologies. Attributable to this, various mobile apps for food delivering, video conferencing, online schoolroom, grocery delivery, team recreation or trifle, and social media gained vast quality.
The android app development is well customizable when it involvictives mobile app development, compatible with completely different devices, cost-efficient, and maybe a responsive package. The widespread user base and, therefore, the relatively versatile app store offers developers the freedom to experiment and are available up with revolutionary applications for android devices.
From smartphones, the android has currently ventured into smart watches, home appliances, cars, and television units. And, it might still grow staggeringly conveyance vast job opportunities for android consultants.
Here square measure many necessary things regarding android that highlight why learning android app development in 2021 would be an excellent move.
Artificial Intelligence and machine learning square measure two evolving technologies that contribute to putting together intelligent, faster, and autonomous products. Siri, Cortana, Google Assistant, and Alexa square measure many AI examples that have created mobile phones and different home devices higher.
For college and workers achievement, Android apps may be pre-loaded with promoting materials once attending job fairs and different networking events to assist them stand out from different establishments. Universities will just about tour prospects around their field by loading photos and videos of the varsity within the android apps.
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What do you mean by android
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How To Be Web Development
Friday, 10 February 2012
What do you mean by Android programming?
Android is basically a modern application, which is used in mobile phones and now extended the operating system, middleware and key applications. Android programming in General is done using Android SDK, which is a software development kit that provides developers with the ability to start developing mobile applications using Java programming language on Android platform. The large platform by the name of Android is actually created by Google and the Open Handset Alliance, which now can be found in numerous high-end mobile phones. Other than Android platform in mobile, other popular mobile platforms available in the market today include Apple iOS, Windows Phone 7 and Symbian. The growing popularity of Android based phone is due to the presence of applications like Doodle jump and Angry birds.
Those who have extensive and deep knowledge of Java programming, Android, because Android is based on Java platform.
It is because of the rich platform that Android has to offer to the programmers, they are able to build and develop innovative applications accordingly. One of several advantages of using Android platform for application development is that applications that were developed using the platforms may be amended and platform-independent, that is why the developers don’t have to look out for extended platforms. Similar to the architecture of the application of Android, iPhone app WINS popularity as a domain under programming slows down mobile application developers.
The process of development of applications in an iphone makes it far superior to other mobile applications in terms of functionality and performance.
The introduction of the iPhone in the mobile market has a new role given to high end mobile phones, which is much more than communication. Some of the popular iPhone applications include names such as:
• Video and music
The concept of Windows mobile development was recently introduced on the market and the concept much fast compared to other platforms such as Mac OS, OS RIM and even Android application development gained popularity. Even in the market as per prefer to use more than 50% of the developers architecture of WM 5.0 or even use because of the following benefits: 6.0
• It supports MS Office applications other than Outlook configuration.
• The integration and synchronization time needed in based Windows platform is much less than that of Blackberry based platform.
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what do you mean by ROOTING an android phone?
11 Tuesday Sep 2012
so what exactly means rooting your android? According to wikipedia : Rooting is a process allowing users of smartphones, tablets, and other devices running the Android operating system to attain privileged control (known as “root access”) within Android’s subsystem. In simple language you can gain control of your phone by rooting( i.e be an admin of your device, called as superuser in android ). you will be able to control your processor, change its speed according to your need and main thing you can increase (overclock) its speed. but need to handle it with care as with great power comes great responsibility. Rooting is the process which makes you take control of your phone completely. And this can also be termed as ” feature of an android phone, which Iphone users should be jealous of”.
For rooting your phone you don’t need to know rocket science, it takes just few steps to root your phone, but care should be taken to download proper root file of your device, if you flash an root file of some other device on your device it can brick it (Bricking an android phone means you have damaged your phone software so badly that it cannot be used or repaired any further, as good as throwing your phone away, In most cases if your phone is stuck on your manufacturer logo or android logo and doesn’t load any more then its said to be bricked). I am not discouraging you but just advising you to take proper care while flashing an root file. most of the user root their phones for installing custom rom’s, because to flash an custom rom you need to be superuser (admin) of your device and that can be done only via rooting.
so you would be asking, why do we take risk of bricking our phone? just for overclocking or changing processor speed? Believe me it is just not overclocking or changing processor speed its lot more. Having an android means you are forced to carry your charger along with you. through rooting you can install softwares that will let you change processor speed so that when you are low on battery and don’t need phone more than just calling and messaging you can slow your processor to save you some battery. and there are softwares that will do it automatically for you. here is one of the software that can be helpful to you, CPU TUNER ( REMEMBER TO ROOT YOUR PHONE BEFORE). Rooting will help you install custom rom’s, many people like me would be bored to use stock rom or default rom( rom is the phone software installed on your device, for example as samsung’s stock rom is touchwiz) installed on your phone which is always slow,laggy and ugly. after rooting your phone you would be able to get many apps in playstore that would help you increase performance of your phone.
Phone manufacturer gives us an guest privileges as they don’t want us to damage internal software beyond repair. that’s the reason we have to root our phone to get the most out of our phones because they don’t have time for us to constantly give updates for our phones and make it an awesome affair for us to use their device. so it is upto us to get it done. and there are many software out in the market that would let you enjoy that.
YOU CAN ROOT YOUR PHONES TO GET FOLLOWING THINGS:-
1) Custom rom:-
If you are having an old android phone and are bored of using the same old rom or same old version of android on your phone, and update for latest android version is no where near. so your best bet in this scenario will be to get an custom rom. now a days there are many custom roms on net which helps you in increasing performance, speed, graphics and will help you to fall in love with your old android phone again. For finding custom rom you can visit forums on xda-developers.com.
2)Custom theme:-
Themes are basically the graphics that appear on your Android device. Rooting your device allows you the ability to fully customize just about every graphic on your device. You can load custom themes that totally change the look and feel of your device.
As mentioned earlier, custom ROM’s can allow you to update to the latest version of the Android OS before they are officially released. This is a great feature for those who are tech-savvy and want to stay on top of the latest and greatest software updates before it hits the mainstream crowd. This is also useful if you have an outdated device that is no longer being updated by the manufacturer.
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