大约有 41,000 项符合查询结果(耗时:0.0368秒) [XML]

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What is the point of function pointers?

...at, float) -> float function typedef int (TMyClass::*pt2Member)(float, char, char); // defines a symbol pt2Member, pointer to a (float, char, char) -> int function // belonging to the class TMyClass The only time I have ever seen function pointers used where functors could not was in Bo...
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Coding Practices which enable the compiler/optimizer to make a faster program

...w customer\n" "3) Destroy\n" "4) Launch Nasal Demons\n" "Enter selection: "; static const size_t Menu_Text_Length = sizeof(Menu_Text) - sizeof('\0'); //... std::cout.write(Menu_Text, Menu_Text_Length); The efficiency of this technique can be visually demonstrated. :-) Don't use print...
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Are Javascript arrays sparse?

... answered May 29 '19 at 1:52 Charles MerriamCharles Merriam 16.4k55 gold badges6262 silver badges7272 bronze badges ...
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How to format a Java string with leading zero?

... your own function. That would be a much better general solution than the selected answer. docjar.com/html/api/org/apache/commons/lang/… – kaliatech Oct 29 '10 at 13:01 3 ...
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How to print a int64_t type in C

...t: #include <stdio.h> #include <stdint.h> int main(int argc, char *argv[]) { int64_t a = 1LL << 63; uint64_t b = 1ULL << 63; printf("a=%jd (0x%jx)\n", a, a); printf("b=%ju (0x%jx)\n", b, b); return 0; } Compiling this code with gcc -Wall -pedantic -...
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How can I perform a reverse string search in Excel without using VBA?

...STITUTE(A1," ",""))))) If your original strings could contain a pipe "|" character, then replace both in the above with some other character that won't appear in your source. (I suspect Brad's original was broken because an unprintable character was removed in the translation). Bonus: How it work...
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How do I design a class in Python?

...on could help you create one just as easily. Maybe you could stay: Query().select('Country').from_table('User').where('Country == "Brazil"'). It doesn't matter exactly the syntax -- that is your job! -- the key is the object is helping you hide something, in this case the data necessary to store and...
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OceanBase使用libeasy原理源码分析:服务器端 - 数据库(内核) - 清泛网 - ...

...EASY_OK,则signal信号量,从而工作线程被唤醒。 典型的,select请求这种需要回复多个包给MySQL客户端的场景使用的都是这种模式 其它诸如只需要回复一个包给MySQL客户端的DML操作,例如INSERT,UPDATE等也使用这种模式,只是工作线程...
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What does the Q_OBJECT macro do? Why do all Qt objects need this macro?

...ual const QMetaObject *metaObject() const; virtual void *qt_metacast(const char *); virtual int qt_metacall(QMetaObject::Call, int, void **); static inline QString tr(const char *s, cons t char *c = nullptr, int n = -1) { return staticMetaObject.tr(s, c, n); } __attribute__ ((__deprecated__)) static...
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Can I use a function for a default value in MySql?

... update previously existing rows, like this: UPDATE app_users SET uuid = (SELECT uuid()); share | improve this answer | follow | ...