大约有 23,000 项符合查询结果（耗时：0.0249秒） [XML]
Is it possible to print a variable's type in standard C++?
... typedef typename std::remove_reference<T>::type TR;
std::unique_ptr<char, void(*)(void*)> own
(
#ifndef _MSC_VER
abi::__cxa_demangle(typeid(TR).name(), nullptr,
nullptr, nullptr),
#else
nullptr,
#e...
Quickly find whether a value is present in a C array?
...s, then you're not getting maximum performance.
; r0 = count, r1 = source ptr, r2 = comparison value
stmfd sp!,{r4-r11} ; save non-volatile registers
mov r3,r0,LSR #3 ; loop count = total count / 8
pld [r1,#128]
ldmia r1!,{r4-r7} ; pre load first set
loop_top:
pld [r1,#128]...
Structure padding and packing
...
That's exactly why, if you look at IP, UDP, and TCP header layouts, you'd see that all integer fields are aligned.
– Nikolai Fetissov
May 24 '14 at 15:09
...
Is gcc's __attribute__((packed)) / #pragma pack unsafe?
...on't yet have the full details of this, but using __builtin_assume_aligned(ptr, align) seems to get gcc to generate the correct code. When I a more concise answer (and hopefully a bug report) I'll update my answer.
– Daniel Santos
Jul 30 '14 at 22:23
...
deciding among subprocess, multiprocessing, and thread in Python?
...some other (writable) descriptors or sockets, some exceptional conditions (TCP out-of-band PUSH'd packets, for example), or a TIMEOUT.
Thus the Twisted programming model is built around handling these events then looping on the resulting "main" handler, allowing it to dispatch the events to your han...
In Functional Programming, what is a functor?
...; it shows how to use functors to build more complex protocol layers (like TCP) on type of simpler layers (like IP or even directly over Ethernet). Each layer is implemented as a functor that takes as a parameter the layer below it. The structure of the software actually reflects the way people th...
Understanding the meaning of the term and the concept - RAII (Resource Acquisition is Initialization
... example, if you use reference-counting smart pointers (like boost::shared_ptr) and create a graph-like structure with a cycle you risk facing a memory leak because the objects in a cycle will prevent each other from being released. Garbage collection would help against this.
...
What are the key differences between Apache Thrift, Google Protocol Buffers, MessagePack, ASN.1 and
...zation, the objects could (but not mandated) be sent between machines over TCP/IP. In SOAP, you started with a WSDL document that fully describes the available services (remote methods) and the expected arguments/objects. Those objects were sent via XML. In Thrift, the .thrift file fully describes t...
C dynamically growing array
...xamples such as this gem where it's revealed that array[index] is actually ptr[index] in disguise... "The definition of the subscript operator [] is that E1[E2] is identical to (*((E1)+(E2)))" You can't refute the std
– autistic
Jun 29 '18 at 2:45
...
In practice, what are the main uses for the new “yield from” syntax in Python 3.3?
...data can be both sent from and to a generator.
(If we were talking about TCP, yield from g might mean "now temporarily disconnect my client's socket and reconnect it to this other server socket".)
BTW, if you are not sure what sending data to a generator even means, you need to drop everything an...