大约有 43,000 项符合查询结果（耗时：0.0499秒） [XML]
I want to get the type of a variable at runtime
...ant to convert the type into a value, so you can store it, pass it around, etc. This involves reflection, and you'll be using either ClassTag or a TypeTag. For example:
val x: Any = 5
import scala.reflect.ClassTag
def f[T](v: T)(implicit ev: ClassTag[T]) = ev.toString
f(x) // returns the string "An...
What is an uninterruptible process?
...uest of the driver, and when the actual device (hard disk / network card / etc) delivers the data, ignore it. An OS kernel should be made in a way that NO developer can screw it up.
– Dexter
Jan 25 '17 at 10:24
...
How do I discover memory usage of my application in Android?
...f the device, since some of that RAM is needed for the radio, DMA buffers, etc).
MemFree is the amount of RAM that is not being used at all. The number you see here is very high; typically on an Android system this would be only a few MB, since we try to use available memory to keep processes runn...
Why is the .bss segment required?
...mple part of the .data section. But the details vary depending on the o/s etc.
– Jonathan Leffler
Aug 16 '16 at 18:42
|
show 14 more commen...
Call An Asynchronous Javascript Function Synchronously
...n my case, are writing a glorified shell script with no callbacks, events, etc.), DO NOT DO THIS!
But here's how you can do this:
./calling-file.js
var createClient = require('sync-rpc');
var mySynchronousCall = createClient(require.resolve('./my-asynchronous-call'), 'init data');
var param1 = '...
How to use PrimeFaces p:fileUpload? Listener method is never invoked or UploadedFile is null / throw
...eName = uploadedFile.getFileName();
String contentType = uploadedFile.getContentType();
byte[] contents = uploadedFile.getContents(); // Or getInputStream()
// ... Save it, now!
}
Or if you want non-ajax file upload:
<h:form enctype="multipart/form-data">
<p:fileUpload mo...
What is the difference between LL and LR parsing?
...sers come in many flavors (LR(0), SLR(1), LALR(1), LR(1), IELR(1), GLR(0), etc.) and are far more powerful. They also tend to have much more complex and are almost always generated by tools like yacc or bison. LL parsers also come in many flavors (including LL(*), which is used by the ANTLR tool),...
Valid values for android:fontFamily and what they map to?
...ince you can limit the search to only the API's, blog posts, release notes etc.
– Ahmad
Oct 30 '13 at 22:50
8
...
When to use static vs instantiated classes
...cally use objects when working with unique things like a photo, user, post etc and use static when its meant for general things?
– Robert Rocha
Apr 2 '16 at 21:29
1
...
How can bcrypt have built-in salts?
... rainbow tables, which are lists of common passwords, or just brute force, etc... of different passwords but hashed. Without salt, the hash for a password in database A would be the same as a hash for a password in database B. Salt merely changes up the hash values making it harder for someone who...