大约有 3,621 项符合查询结果（耗时：0.0206秒） [XML]
In Firebase, is there a way to get the number of children of a node without loading all the node dat
...odes:
var upvotesRef = new Firebase('https://docs-examples.firebaseio.com/android/saving-data/fireblog/posts/-JRHTHaIs-jNPLXOQivY/upvotes');
upvotesRef.transaction(function (current_value) {
return (current_value || 0) + 1;
});
For more info, see https://www.firebase.com/docs/transactions.html
...
Cocoa: What's the difference between the frame and the bounds?
... @Honey, I'm a little rusty on my iOS skills since I've been working on Android for the last year. I believe the root view of a View Controller fills the screen, so its frame and bounds should be the same.
– Suragch
Nov 17 '17 at 2:58
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What is the purpose of a stack? Why do we need it?
...virtual machine. As opposed to a register based VM, the Dalvik VM used in Android operating systems is an example of that.
The stack in the VM is virtual, it is up to the interpreter or the just-in-time compiler to translate the VM instructions into actual code that runs on the processor. Which i...
Separate REST JSON API server and client? [closed]
...e a web one, but it sets you up for easily creating other clients (iPhone, Android).
Cons:
Backwards Compatibility. This is more related to an API than your direct question, but once your API is out there, you can't just break it or you break all your clients two. This doesn't mean you have to m...
Passing Data between View Controllers
...ameters not in a place when you're making the call, but in some other one. Android has a better approach in this regard - when you start an Activity you can pass any data (well, almost) via its starting Intent. Easy. No need to cast or something. Passing return values back to caller is an essential ...
How to parse/format dates with LocalDateTime? (Java 8)
...e: There's a backport of java.time to Java 6 and 7: ThreeTen-Backport. For Android it has ThreeTenABP.
[1] Not just that they are not stripes, but there also some weird extremes. For instance, some neighboring pacific islands have +14:00 and -11:00 time zones. That means, that while on one island, ...
Quickly find whether a value is present in a C array?
...erience is anecdotal/worthless and require proof. I used GCC 4.8 (from the Android NDK 9C) to generate the following output with optimization -O2 (all optimizations turned on including loop unrolling). I compiled the original C code presented in the question above. Here's what GCC produced:
.L9: cm...
How to create GUID / UUID?
... and the non-rfc-compliant generateQuickGuid:
Desktop Android
broofa: 1617ms 12869ms
e1: 636ms 5778ms
e2: 606ms 4754ms
e3: 364ms 3003ms
e4: 329ms 2015ms
e5: 147ms 1156ms
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中文网（自研/维护）拓展 · App Inventor 2 中文网
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CreateShortcut(name,icon,packageName,duplicate)
在 Android 手机桌面上创建快捷方式。
Sidebar
Component for Sidebar
属性
None
事件
AfterSelecting(itemPosition,itemValue,iconCode)
菜...
resizes wrong; appears to have unremovable `min-width: min-content`
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¹ Value may be prefixed. According to one reader, this has no effect in Android 4.1.2 Stock Browser and possibly other old versions; I have not had time to verify this.
² All links to the Gecko source in this answer refer to the 5065fdc12408 changeset, committed 29ᵗʰ July 2013; you may wish ...