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Immutable vs Unmodifiable collection
...odifiable collection, you can't rely on the contents not changing.
An immutable collection guarantees that nothing can change the collection any more. If it wraps a modifiable collection, it makes sure that no other code has access to that modifiable collection. Note that although no code can chang...
What is the effect of extern “C” in C++?
...
11: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND _GLOBAL_OFFSET_TABLE_
12: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND _Z1gv
13: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND eg
Interpretation
We see that:
ef and eg were stored in symbols with the same name as in ...
typedef struct vs struct definitions [duplicate]
...he identifiers are defined. The compiler will search the global identifier table and after S has not been found it will search for S within the class identifiers.
The code presented before behaves in the same way:
typedef struct S {
int x;
} T;
void S() {} // correct [*]
//void T() {} // e...
Swift native base class or NSObject
...r by using the '@objc' decoration. Otherwise it will follow a static- and vtable-dispatch style, like C++.
6 Answers
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How can I use NSError in my iPhone App?
... // init dictionary to be used to populate error object
NSMutableDictionary* details = [NSMutableDictionary dictionary];
[details setValue:@"ran out of money" forKey:NSLocalizedDescriptionKey];
// populate the error object with the details
*error = [NSError err...
What “things” can be injected into others in Angular.js?
...
Rather that just fill in the table with "yes" and "no" with no explanation, I'll go into a little bit more detail.
[Note, added after finishing: this ended up being... quite a bit longer than I expected. There's a tl;dr at the bottom, but I hope this pr...
Why does sun.misc.Unsafe exist, and how can it be used in the real world?
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VM "intrinsification." ie CAS (Compare-And-Swap) used in Lock-Free Hash Tables
eg:sun.misc.Unsafe.compareAndSwapInt
it can make real JNI calls into native code that contains special instructions for CAS
read more about CAS here http://en.wikipedia.org/wiki/Compare-and-swap
The sun.misc.Unsafe fu...
Solr vs. ElasticSearch [closed]
...Maturity: Solr is more mature, but ES has grown rapidly and I consider it stable
Performance: hard to judge. I/we have not done direct performance benchmarks. A person at LinkedIn did compare Solr vs. ES vs. Sensei once, but the initial results should be ignored because they used non-expert setup ...
Scala: What is a TypeTag and how do I use it?
...flect.ClassTag[List[Int]] =↩
ClassTag[class scala.collection.immutable.List]
As one can see above, they don't care about type erasure, therefore if one wants "full" types TypeTag should be used:
scala> typeTag[List[Int]]
res105: reflect.runtime.universe.TypeTag[List[Int]] = TypeTag[s...
Insert code into the page context using a content script
...eed to use DOMContentLoaded event inside the exposed code to wait for DOM.
Table of contents
Method 1: Inject another file
Method 2: Inject embedded code
Method 2b: Using a function
Method 3: Using an inline event
Dynamic values in the injected code
Method 1: Inject another file
This is the easies...