大约有 8,000 项符合查询结果（耗时：0.0235秒） [XML]
STL or Qt containers?
... 1 byte. E.g. the largest .size() I could have of QVector<float> on x86_64 Linux gcc was 536870907 elements (2²⁹-5), while std::vector<float> successfully allocated 4294967295 elements (2³²-1; didn't try more due to lack of RAM for this (this size already takes 16 GiB)).
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Is gcc 4.8 or earlier buggy about regular expressions?
....
$ clang --version
clang version 3.9.0 (tags/RELEASE_390/final)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
$ ./a.out # compiled with 'clang -lstdc++'
<regex> works, look: true
Here be Dragons
This is totally unsupported and relies on the detection of pr...
List of Delphi language features and version in which they were introduced/deprecated
... necessarily do this)
Eight new DEFINEs have been added:
ALIGN_STACK
CPUX86
CPUX64
MACOS (Mac operating system)
MACOS32
PC_MAPPED_EXCEPTIONS
PIC
WIN64
Full unit scope names are now required in your uses clause.
{$ExcessPrecision on/off} compiler directive (x64 only)
The build-in types differ de...
Why are margin/padding percentages in CSS always calculated against width?
...r from @ChuckKollars after playing with this JSFiddle (on Chrome 46.0.2490.86) and referring to this post (written in Chinese).
A major reason against the infinite calculation conjecture is that: using width faces the same infinite calculation problem.
Have a look at this JSFiddle, the parent di...
What is RSS and VSZ in Linux memory management
...this to make sense, you have to understand the basics of paging: How does x86 paging work? and in particular that the OS can allocate virtual memory via page tables / its internal memory book keeping (VSZ virtual memory) before it actually has a backing storage on RAM or disk (RSS resident memory).
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Is “inline” without “static” or “extern” ever useful in C99?
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> I get a linker error (undefined reference to f)
Works here: Linux x86-64, GCC 4.1.2. May be a bug in your compiler; I don't see anything in the cited paragraph from the standard that forbids the given program. Note the use of if rather than iff.
An inline definition provides an alternati...
IntelliJ beginning of file keyboard shortcut
...e end. vote this comment if you are on windows!
– Gab是好人
Jul 21 '15 at 14:41
1
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Convert a Git folder to a submodule retrospectively?
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86
To isolate a subdirectory into its own repository, use filter-branch on a clone of the original...
How do I show the changes which have been staged?
... what it means "index" in this context? Thanks!
– Gab是好人
Apr 18 '16 at 13:23
2
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How is Docker different from a virtual machine?
... fact: Before 1998 it was thought to be impossible to achieve this on the x86 architecture because there was no way to do this kind of interception. The folks at VMware were the first who had an idea to rewrite the executable bytes in memory for privileged calls of the guest OS to achieve this.
The ...