why UIView variables could not create retain cycle problem?iphone/ipad - parent UIView is blocking touches from getting to subviews - why?UIView not retaining subviewsDoes the absence of a “likely to lead to a retain cycle” warning imply a strong reference cycle will not be created?Retain Cycle on Retain Cyclesweak variable with a strong reference in a block: does not create a retain cycle?Retain Cycle in Swift delegateNo Retain Cycle, But why still got retain cycle warning?Retaining cycle with passing objectsRetain cycle concernMemory management: retain cycle with weak var, non retain cycle with unowned. Why?
Why is python script running in background consuming 100 % CPU?
Can anyone provide me info what this is?
Why were early aviators' trousers flared at the thigh?
Why could the Lunar Ascent Engine be used only once?
In how many ways can we partition a set into smaller subsets so the sum of the numbers in each subset is equal?
What is the backup for a glass cockpit, if a plane loses power to the displays/controls?
Why didn't Daenerys' advisers suggest assassinating Cersei?
How to convince boss to spend notice period on documentation instead of new projects
Character had a different name in the past. Which name should I use in a flashback?
Isn't Kirchhoff's junction law a violation of conservation of charge?
Why does string strummed with finger sound different from the one strummed with pick?
Managing heat dissipation in a magic wand
If you attack a Tarrasque while swallowed, what AC do you need to beat to hit it?
Can a problematic AL DM/organizer prevent me from running a separate AL-legal game at the same store?
How can I prevent Bash expansion from passing files starting with "-" as argument?
Windows reverting changes made by Linux to FAT32 partition
Failing students when it might cause them economic ruin
Have the writers and actors of Game Of Thrones responded to its poor reception?
How does the "reverse syntax" in Middle English work?
Cycling to work - 30 mile return
Why would Thor need to strike a building with lightning to attack enemies?
Can 2 light bulbs of 120V in series be used on 230V AC?
FIFO data structure in pure C
Would it be possible to set up a franchise in the ancient world?
why UIView variables could not create retain cycle problem?
iphone/ipad - parent UIView is blocking touches from getting to subviews - why?UIView not retaining subviewsDoes the absence of a “likely to lead to a retain cycle” warning imply a strong reference cycle will not be created?Retain Cycle on Retain Cyclesweak variable with a strong reference in a block: does not create a retain cycle?Retain Cycle in Swift delegateNo Retain Cycle, But why still got retain cycle warning?Retaining cycle with passing objectsRetain cycle concernMemory management: retain cycle with weak var, non retain cycle with unowned. Why?
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty height:90px;width:728px;box-sizing:border-box;
When I searched code of UIView , I could not understand that why superview and subviews properities does not create retain cycle?
extension UIView {
open var superview: UIView? get
open var subviews: [UIView] get
open var window: UIWindow? get
uiview swift4.2 retain-cycle
asked Mar 20 at 13:09
ahmetvefa53ahmetvefa53
739
add a comment |
When I searched code of UIView , I could not understand that why superview and subviews properities does not create retain cycle?
extension UIView {
open var superview: UIView? get
open var subviews: [UIView] get
open var window: UIWindow? get
uiview swift4.2 retain-cycle
asked Mar 20 at 13:09
ahmetvefa53ahmetvefa53
739
add a comment |
When I searched code of UIView , I could not understand that why superview and subviews properities does not create retain cycle?
extension UIView {
open var superview: UIView? get
open var subviews: [UIView] get
open var window: UIWindow? get
uiview swift4.2 retain-cycle
asked Mar 20 at 13:09
ahmetvefa53ahmetvefa53
739
When I searched code of UIView , I could not understand that why superview and subviews properities does not create retain cycle?
extension UIView {
open var superview: UIView? get
open var subviews: [UIView] get
open var window: UIWindow? get
uiview swift4.2 retain-cycle
uiview swift4.2 retain-cycle
asked Mar 20 at 13:09
ahmetvefa53ahmetvefa53
739
asked Mar 20 at 13:09
ahmetvefa53ahmetvefa53
739
asked Mar 20 at 13:09
ahmetvefa53ahmetvefa53
739
asked Mar 20 at 13:09
ahmetvefa53ahmetvefa53
739
asked Mar 20 at 13:09
ahmetvefa53ahmetvefa53
739
739
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
A computed property is just a pair of a getter and a setter (or, in this case, it's a read-only property which is only a getter). The declaration doesn't tell you how any underlying data that the property uses might be stored or memory-managed.
answered Mar 23 at 18:35
newacctnewacct
96.9k23136197
add a comment |
I could not understand that why superview and subviews properities does not create retain cycle?
It's because the view hierarchy is a directed graph with respect to retains. Views retain their subviews, but subviews don't retain their superviews.
answered Mar 23 at 20:29
CalebCaleb
111k17155244
add a comment |
Your Answer
StackExchange.ifUsing("editor", function ()
StackExchange.using("externalEditor", function ()
StackExchange.using("snippets", function ()
StackExchange.snippets.init();
);
);
, "code-snippets");
StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "1"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);
else
createEditor();
);
function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);
);
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f55261522%2fwhy-uiview-variables-could-not-create-retain-cycle-problem%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
A computed property is just a pair of a getter and a setter (or, in this case, it's a read-only property which is only a getter). The declaration doesn't tell you how any underlying data that the property uses might be stored or memory-managed.
answered Mar 23 at 18:35
newacctnewacct
96.9k23136197
add a comment |
A computed property is just a pair of a getter and a setter (or, in this case, it's a read-only property which is only a getter). The declaration doesn't tell you how any underlying data that the property uses might be stored or memory-managed.
answered Mar 23 at 18:35
newacctnewacct
96.9k23136197
add a comment |
A computed property is just a pair of a getter and a setter (or, in this case, it's a read-only property which is only a getter). The declaration doesn't tell you how any underlying data that the property uses might be stored or memory-managed.
answered Mar 23 at 18:35
newacctnewacct
96.9k23136197
A computed property is just a pair of a getter and a setter (or, in this case, it's a read-only property which is only a getter). The declaration doesn't tell you how any underlying data that the property uses might be stored or memory-managed.
answered Mar 23 at 18:35
newacctnewacct
96.9k23136197
answered Mar 23 at 18:35
newacctnewacct
96.9k23136197
answered Mar 23 at 18:35
newacctnewacct
96.9k23136197
answered Mar 23 at 18:35
newacctnewacct
96.9k23136197
96.9k23136197
add a comment |
add a comment |
I could not understand that why superview and subviews properities does not create retain cycle?
It's because the view hierarchy is a directed graph with respect to retains. Views retain their subviews, but subviews don't retain their superviews.
answered Mar 23 at 20:29
CalebCaleb
111k17155244
add a comment |
I could not understand that why superview and subviews properities does not create retain cycle?
It's because the view hierarchy is a directed graph with respect to retains. Views retain their subviews, but subviews don't retain their superviews.
answered Mar 23 at 20:29
CalebCaleb
111k17155244
add a comment |
I could not understand that why superview and subviews properities does not create retain cycle?
It's because the view hierarchy is a directed graph with respect to retains. Views retain their subviews, but subviews don't retain their superviews.
answered Mar 23 at 20:29
CalebCaleb
111k17155244
I could not understand that why superview and subviews properities does not create retain cycle?
It's because the view hierarchy is a directed graph with respect to retains. Views retain their subviews, but subviews don't retain their superviews.
answered Mar 23 at 20:29
CalebCaleb
111k17155244
answered Mar 23 at 20:29
CalebCaleb
111k17155244
answered Mar 23 at 20:29
CalebCaleb
111k17155244
answered Mar 23 at 20:29
CalebCaleb
111k17155244
111k17155244
add a comment |
add a comment |
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f55261522%2fwhy-uiview-variables-could-not-create-retain-cycle-problem%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
