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逆向工程——二进制炸弹(CSAPP Project) - 操作系统(内核) - 清泛网 - 专注...

...这六个关卡了。 ===============phase_1=============== 知识点:string,函数调用,栈 用了差不多一个星期断断续续地寻找感觉的phase_1,最主要不知道从何入手。虽然phase_1也不过10+行指令,但最初我的出发点错了:完全依靠人工去读...
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How to avoid null checking in Java?

...dition> is a boolean expression and <object> is an object whose toString() method's output will be included in the error. An assert statement throws an Error (AssertionError) if the condition is not true. By default, Java ignores assertions. You can enable assertions by passing the optio...
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What is the rationale for fread/fwrite taking size and count as arguments?

...o compare the result against the requested number of bytes (which requires extra C code and extra machine code). – R.. GitHub STOP HELPING ICE Jul 31 '10 at 0:16 1 ...
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How do you echo a 4-digit Unicode character in Bash?

...3 # Ceiling local p=128 # Accum. bits local s='' # Output string (( c < 0x80 )) && { fast_chr "$c"; echo -n "$REPLY"; return; } while (( c > o )); do fast_chr $(( t = 0x80 | c & 0x3f )) s="$REPLY$s" (( c >>= 6, l++, p += o+1,...
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C++11 tuple 这一篇就够了 - C/C++ - 清泛网 - 专注C/C++及内核技术

...的多个tuple)。 #include <iostream> #include <utility> #include <string> #include <tuple> int main () { std::tuple<float,std::string> mytuple (3.14,"pi"); std::pair<int,char> mypair (10,'a'); auto myauto = std::tuple_cat ( mytuple, mypair ); std::cout << "myauto contai...
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std::stringstream ss; 直接使用ss.str().c_str() 字符串指针可能导致崩溃 ...

std::stringstream ss; 直接使用ss.str().c_str() 字符串指针可能导致崩溃std::stringstream ss;const char* ch = ss str() c_str();call_func(ch);这种写法在系统内存不足时,ss会立马释放内存,字符串指针ch可能会非法访问导致崩溃。代码最好的是 std::s...
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VC/Linux C++ 递归访问目录下所有文件 - c++1y / stl - 清泛IT社区,为创新赋能!

...ent.h&gt; #include &lt;iostream&gt; #include &lt;cstdlib&gt; #include &lt;cstring&gt; using namespace std; void GetFileInDir(string dirName) { &nbsp; &nbsp; DIR* Dir = NULL; &nbsp; &nbsp; struct dirent* file = NULL; &nbsp; &nbsp; if (dirName[dirName.size()-1] != '/') &nbsp; &nbsp; { &nbsp; &nbsp;&nb...
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Pointers in C: when to use the ampersand and the asterisk?

... the pointer. But things work differently when you're working with arrays, strings or when you're calling functions with a pointer copy of a variable. It's difficult to see a pattern of logic inside all of this. ...
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How to concatenate twice with the C preprocessor and expand a macro as in “arg ## _ ## MACRO”?

...quires it to work; you tend to find you need the equivalent trick with the stringizing operator too. Section 6.10.3 of the C99 standard covers 'macro replacement', and 6.10.3.1 covers 'argument substitution'. After the arguments for the invocation of a function-like macro have been identified, ...
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Received an invalid column length from the bcp client for colid 6

...atabase table schema. To avoid this, try exceeding the data-length of the string datatype in the database table. Hope this helps. share | improve this answer | follow ...