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What does “dereferencing” a pointer mean?
...his way C encodes text in memory is known as ASCIIZ.
For example, if the string literal happened to be at address 0x1000 and p a 32-bit pointer at 0x2000, the memory content would be:
Memory Address (hex) Variable name Contents
1000 'a' == 97 (ASCII)
1001...
(grep) Regex to match non-ASCII characters?
...
[^\x00-\x7F] and [^[:ascii:]] miss some control bytes so strings can be the better option sometimes. For example cat test.torrent | perl -pe 's/[^[:ascii:]]+/\n/g' will do odd things to your terminal, where as strings test.torrent will behave.
...
What's wrong with this 1988 C code?
...colon after the 1 and the 0, when IN and OUT got replaced in the code, the extra semicolon after the number produced invalid code, for instance this line:
else if (state == OUT)
Ended up looking like this:
else if (state == 0;)
But what you wanted was this:
else if (state == 0)
Solution: re...
Is there a way to loop through a table variable in TSQL without using a cursor?
... --decrease count
END
No Cursors, no temporary tables, no extra columns.
The USERID column must be a unique integer, as most Primary Keys are.
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Typedef function pointer?
...he original type, for instance
typedef int myinteger;
typedef char *mystring;
typedef void (*myfunc)();
using them like
myinteger i; // is equivalent to int i;
mystring s; // is the same as char *s;
myfunc f; // compile equally as void (*f)();
As you can see, you...
How do I break a string over multiple lines?
In YAML, I have a string that's very long. I want to keep this within the 80-column (or so) view of my editor, so I'd like to break the string. What's the syntax for this?
...
Read error response body in Java
...nges for encoding or other things. Works in current environment.)
private String dispatch(HttpURLConnection http) throws Exception {
try {
return readStream(http.getInputStream());
} catch(Exception ex) {
readAndThrowError(http);
return null; // <- never gets here...
Use space as a delimiter with cut command
...pplications to specify the option and option-argument in the same argument string without intervening characters.
In other words: In this case, because -d's option-argument is mandatory, you can choose whether to specify the delimiter as:
(s) EITHER: a separate argument
(d) OR: as a value dire...
SHFileOperation函数总结（文件夹的移动、复制、删除） - C/C++ - 清泛网 -...
...leOperation用法总结：
//删除文件或者文件夹
bool DeleteFile(char * lpszPath)
{
SHFILEOPSTRUCT FileOp={0};
FileOp.fFlags = FOF_ALLOWUNDO | //允许放回回收站
FOF_NOCONFIRMATION; //不出现确认对话框
FileOp.pFrom = lpszPath;
FileOp.pTo = NULL; //一定要是NULL
FileOp...
Get/pick an image from Android's built-in Gallery app programmatically
...r own action
private static final int SELECT_PICTURE = 1;
private String selectedImagePath;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
findViewById(R.id.Button01)
.setOnCl...