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Multiple commands on same line
...t use ^J as command separator in a string because it is inserting the NULL character terminating the string. however you can use <CR> = "\n".
– Tinmarino
Aug 10 '17 at 13:24
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ATL正则表达式库使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
...来进行匹配了，Match方法的原型如下：
BOOL Match(const RECHAR *szIn, CAtlREMatchContext *pContext, const RECHAR **ppszEnd=NULL)
参数的含义很明显，不过需要注意到第一个参数的型别是：const RECHAR * szIN，是一个 const指针，这表明我们可以方...
How do I get extra data from intent on Android?
...TRING);
getArguments().getBoolean(ARG_SECTION_BOOL);
getArguments().getChar(ARG_SECTION_CHAR);
getArguments().getByte(ARG_SECTION_DATA);
}
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C dynamically growing array
...praised and used for its "exponential but much less violently than base-2" characteristics, but easier to calculate. The +8 means that arrays which are reasonably small don't end up doing too many copies. It adds a multiplicative term allowing the array to quickly grow if its size is irrelevant. In ...
How should one use std::optional?
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@Rapptz Line 256: union storage_t { unsigned char dummy_; T value_; ... } Line 289: struct optional_base { bool init_; storage_t<T> storage_; ... } How is that not "a T and a bool"? I completely agree the implementation is very tricky and nontrivial, but conceptua...
How to append a newline to StringBuilder
... edited Mar 15 '19 at 16:20
Charles Giguere
4711 silver badge99 bronze badges
answered Dec 3 '15 at 18:00
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Can C++ code be valid in both C++03 and C++11 but do different things?
... them is much less likely to occur.
String literals
#define u8 "abc"
const char* s = u8"def"; // Previously "abcdef", now "def"
and
#define _x "there"
"hello "_x // Previously "hello there", now a user defined string literal
Type conversions of 0
In C++11, only literals are integer null pointer co...
How can we prepend strings with StringBuilder?
... O(n^2) time.
A naive approach would be to add an offset into the backing char[] buffer as well as the length. When there is not enough room for a prepend, move the data up by more than is strictly necessary. This can bring performance back down to O(n log n) (I think). A more refined approach is t...
How to sum up an array of integers in C#
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Point taken. Yet, the following saves 18 chars compared to your sample: foreach (int i in arr) sum += i;
– Jørn Schou-Rode
Mar 16 '10 at 11:44
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How to initialize all the elements of an array to any specific value in java
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[Incidentally, memset in C or C++ is only of any real use for arrays of char.]
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