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How to create Android Facebook Key Hash?

...of your app on facebook. To get there, go to developers.facebook.com/apps, select your app, go to Edit settings and scroll down. After that, wait a few minutes until the changes take effect. share | ...
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Meaning of 'const' last in a function declaration of a class?

... had the following extra method declaration: class foobar { ... const char* bar(); } The method bar() is non-const and can only be accessed from non-const values. void func1(const foobar& fb1, foobar& fb2) { const char* v1 = fb1.bar(); // won't compile const char* v2 = fb2.bar()...
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[源码实例] c/c++获取网卡mac地址 - C/C++ - 清泛网 - 专注C/C++及内核技术

...]; }ASTAT, * PASTAT; ASTAT Adapter; void getmac_one (int lana_num,char *pMicID) { NCB ncb; UCHAR uRetCode; memset( &ncb, 0, sizeof(ncb) ); ncb.ncb_command = NCBRESET; ncb.ncb_lana_num = lana_num; // 指定网卡号 // 首先对选定的网卡发送一个NCBRESET命令...
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Best way to specify whitespace in a String.Split operation

...yStr.Split(null); //Or myStr.Split() or: string[] ssize = myStr.Split(new char[0]); then white-space is assumed to be the splitting character. From the string.Split(char[]) method's documentation page. If the separator parameter is null or contains no characters, white-space characters are assume...
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How to document a method with parameter(s)?

...nts which is a compact, machine-readable syntax: from typing import Dict, Union def foo(i: int, d: Dict[str, Union[str, int]]) -> int: """ Explanation: this function takes two arguments: `i` and `d`. `i` is annotated simply as `int`. `d` is a dictionary with `str` keys and value...
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Format date and time in a Windows batch script

...ces with zeros. Short explanation of how substrings work: %VARIABLE:~num_chars_to_skip,num_chars_to_keep% So to get just the year from a date like "29.03.2018" use: %DATE:~6,4% ^-----skip 6 characters ^---keep 4 characters ...
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Make first letter of a string upper case (with maximum performance)

...C# 8 public static class StringExtensions { public static string FirstCharToUpper(this string input) => input switch { null => throw new ArgumentNullException(nameof(input)), "" => throw new ArgumentException($"{nameof(input)} cannot be empty", n...
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Code Golf: Lasers

The shortest code by character count to input a 2D representation of a board, and output 'true' or 'false' according to the input . ...
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How do I set a conditional breakpoint in gdb, when char* x points to a string whose value equals “he

Can I specify that I want gdb to break at line x when char* x points to a string whose value equals "hello" ? If yes, how? ...
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Find index of last occurrence of a sub-string using T-SQL

...X, followed again by REVERSE to restore the original order. For instance: SELECT mf.name ,mf.physical_name ,reverse(left(reverse(physical_name), charindex('\', reverse(physical_name)) -1)) from sys.master_files mf shows how to extract the actual database file names from from their "physic...