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ReactJS Two components communicating

... arrange those components. A few example scenarios that come to mind right now: <Filters /> is a child component of <List /> Both <Filters /> and <List /> are children of a parent component <Filters /> and <List /> live in separate root components entirely. Th...
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Create an index on a huge MySQL production table without table locking

...ating MySQL's Schema without downtime Thusfar, there's only one method I know of to update a MySql schema and not suffer an availability outage. Circular masters: Master A has your MySQL database running on it Bring Master B into service and have it replicate writes from Master A ( B is a slave ...
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What is the difference between MOV and LEA?

I would like to know what the difference between these instructions is: 12 Answers 12 ...
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Can local storage ever be considered secure? [closed]

...ll but one of these concerns does not apply to the WebCrypto API, which is now reasonably well supported. For an offline app, you must still design and implement a secure keystore. Aside: If you are using Node.js, use the builtin crypto API. Native-Javascript Cryptography (pre-WebCrypto) I presu...
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Custom domain for GitHub project pages

...tells GitHub to use this repo to handle traffic to this domain. 4. Wait Now wait 5 minutes, your project page should now be live. share | improve this answer | follow ...
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Should IBOutlets be strong or weak under ARC?

... footprint was crucial, hence there was view unloading. That changed as we now have more and more RAM, and Apple optimized UIViews in iOS 6, so that on memory warnings, a lot of memory can be freed without unloading the view. – Tammo Freese Sep 4 '16 at 16:11 ...
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What is the difference between Spring, Struts, Hibernate, JavaServer Faces, Tapestry?

May I know what is the difference between:- 9 Answers 9 ...
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How to make vi redraw screen?

... I've been using ctrl+L for such purposes for 35 years now, what's wrong with it? share | improve this answer | follow | ...
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Why is there a difference in checking null against a value in VB.NET and C#?

... the VB.NET semantics, which in essence gives NULL the semantics "I don't know yet". Then the comparison of 5 to "I don't know yet". is naturally "I don't know yet"; ie NULL. This has the additional advantage of mirroring the behaviour of NULL in (most if not all) SQL databases. This is also a more ...
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What's the reason I can't create generic array types in Java?

...s) contain, at runtime, information about its component type. So you must know the component type when you create the array. Since you don't know what T is at runtime, you can't create the array. share | ...