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What is a 'semantic predicate' in ANTLR?
...he grammar into:
number
@init { int N = 0; }
: (Digit { N++; } )+ { N <= 10 }?
;
The parts { int N = 0; } and { N++; } are plain Java statements of which
the first is initialized when the parser "enters" the number rule. The actual
predicate is: { N <= 10 }?, which causes the parser ...
Pushing to Git returning Error Code 403 fatal: HTTP request failed
...t's cause.
Github seems only supports ssh way to read&write the repo, although https way also displayed 'Read&Write'.
So you need to change your repo config on your PC to ssh way:
edit .git/config file under your repo directory
find url=entry under section [remote "origin"]
change it from u...
Simulate low network connectivity for Android [closed]
... page: Android Emulator. Pay attention to next two arguments:
-netdelay <delay>
Set network latency emulation to . Default value is none. See
the table in Network Delay Emulation for supported values.
-netspeed <speed>
Set network speed emulation to . Default value is...
How can I change image tintColor in iOS and WatchKit
...you have not set a Global Tint, theImage will be tinted light blue by default when used as a template image.
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Why do people still use primitive types in Java?
... args) {
Long sum = 0L; // uses Long, not long
for (long i = 0; i <= Integer.MAX_VALUE; i++) {
sum += i;
}
System.out.println(sum);
}
and it takes 43 seconds to run. Taking the Long into the primitive brings it down to 6.8 seconds... If that's any indication why we use p...
How to safely call an async method in C# without await
...; Console.WriteLine(t.Exception),
TaskContinuationOptions.OnlyOnFaulted);
This will allow you to deal with an exception on a thread other than the "main" thread. This means you don't have to "wait" for the call to MyAsyncMethod() from the thread that calls MyAsyncMethod; but, still allows ...
Fast way of counting non-zero bits in positive integer
...
Although those are fast options for single integers, note that algorithms presented in other answers may be potentially vectorised, thus much faster if run across many elements of a large numpy array.
– g...
Testing two JSON objects for equality ignoring child order in Java
... return false;
}
if (_children != null) {
for (Map.Entry<String, JsonNode> en : _children.entrySet()) {
String key = en.getKey();
JsonNode value = en.getValue();
JsonNode otherValue = other.get(key);
if (otherValue == null || ...
How do I use vim registers?
... it will be assigned to the 0 register, as well as being saved in the default " register. The difference between the 0 and " registers is that 0 is only populated with yanked text, whereas the default register is also populated with text deleted using d/D/x/X/c/C/s/S commands.
I find this useful wh...
Is it OK to use == on enums in Java?
...ava, as published by Sun, and part of the JDK:
public abstract class Enum<E extends Enum<E>>
implements Comparable<E>, Serializable {
// [...]
/**
* Returns true if the specified object is equal to this
* enum constant.
*
* @param other the object...