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C++ Tuple vs Struct
...on about tuple and struct and I write some simple benchmarks with the help from one of my colleague to identify the differences in term of performance between tuple and struct. We first start with a default struct and a tuple.
struct StructData {
int X;
int Y;
double Cost;
std::str...
Exposing a port on a live Docker container
...not do this via Docker, but you can access the container's un-exposed port from the host machine.
If you have a container with something running on its port 8000, you can run
wget http://container_ip:8000
To get the container's IP address, run the 2 commands:
docker ps
docker inspect container_name...
Can a local variable's memory be accessed outside its scope?
...rized to be in the room. Nor is there a mysterious force that prevents you from entering a room with a stolen key.
The hotel management is not required to remove your book. You didn't make a contract with them that said that if you leave stuff behind, they'll shred it for you. If you illegally re-e...
How do I check whether a jQuery element is in the DOM?
...s I was typing my question: Call
$foo.parent()
If $f00 has been removed from the DOM, then $foo.parent().length === 0. Otherwise, its length will be at least 1.
[Edit: This is not entirely correct, because a removed element can still have a parent; for instance, if you remove a <ul>, each...
How to get current timestamp in string format in Java? “yyyy.MM.dd.HH.mm.ss”
... is ambiguous as to its exact meaning as it lacks any indication of offset-from-UTC or time zone.
ISO 8601
If you have any say in the matter, I suggest you consider using standard ISO 8601 formats rather than rolling your own. The standard format is quite similar to yours. For example:2016-02-20T03:...
Unbalanced calls to begin/end appearance transitions for
...the tab bar controller's view controllers. Always present view controllers from the topmost view controller, which means in this case ask the tab bar controller to present the overlay view controller on behalf of the view controller. You can still keep any callback delegates to the real view control...
Is it worth using Python's re.compile?
...time it takes to check the cache (a key lookup on an internal dict type).
From module re.py (comments are mine):
def match(pattern, string, flags=0):
return _compile(pattern, flags).match(string)
def _compile(*key):
# Does cache check at top of function
cachekey = (type(key[0]),) + k...
What is the difference between POST and GET? [duplicate]
... request should cause.
and
POST submits data to be processed (e.g., from an HTML form) to the identified resource. The data is included in the body of the request. This may result in the creation of a new resource or the updates of existing resources or both.
So essentially GET is used to r...
How does JavaScript .prototype work?
...slot as a property on an object, internal to the JavaScript engine, hidden from the code you write. The square brackets around [[Prototype]] are deliberate, and are an ECMAScript specification convention to denote internal slots.
The value pointed at by the [[Prototype]] of an object, is colloquia...
When deleting remote git branch “error: unable to push to unqualified destination”
...ch. If you go a git fetch you will see the branch again. It just remove it from your local list of remote branch.
– Patrick Desjardins
Oct 27 '14 at 15:07
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