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Difference between python3 and python3m executables

... will also contribute to the file name: --with-pydebug (flag: d) --with-pymalloc (flag: m) --with-wide-unicode (flag: u) via PEP 3149. Regarding the m flag specifically, this is what Pymalloc is: Pymalloc, a specialized object allocator written by Vladimir Marangozov, was a feature added to Python...
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Transparent ARGB hex value

...6 35% — 59 30% — 4D 25% — 40 20% — 33 15% — 26 10% — 1A 5% — 0D 0% — 00 How is it calculated? FF is number written in hex mode. That number represent 255 in decimal. For example, if you want 42% to calculate you need to find 42% of numbeer 255 and convert that number to hex. 255 *...
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MISCONF Redis is configured to save RDB snapshots

... linux machines) but a lot of the times BGAVE fails because the fork can't allocate memory. Many times the fork fails to allocate memory (although the machine has enough RAM available) because of a conflicting optimization by the OS. As can be read from Redis FAQ: Redis background saving schema rel...
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C++对象布局及多态探索之菱形结构虚继承 - C/C++ - 清泛网 - 专注C/C++及内核技术

...00426C0A push esi 06 00426C0B push edi 07 00426C0C push ecx 08 00426C0D lea edi,[ebp+FFFFFF34h] 09 00426C13 mov ecx,33h 10 00426C18 mov eax,0CCCCCCCCh 11 00426C1D rep stos dword ptr [edi] 12 00426C1F pop ecx 13 00426C20 mov dword ptr [ebp-8],ecx 14 00426C23 mov eax,dword ptr [ebp-8...
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What does the M stand for in C# Decimal literal notation?

... From C# specifications: var f = 0f; // float var d = 0d; // double var m = 0m; // decimal (money) var u = 0u; // unsigned int var l = 0l; // long var ul = 0ul; // unsigned long Note that you can use an uppercase or lowercase notation. ...
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When should I use mmap for file access?

...programs; program A which reads in a 1MB file into a buffer creating with malloc, and program B which mmaps the 1MB file into memory. If the operating system has to swap part of A's memory out, it must write the contents of the buffer to swap before it can reuse the memory. In B's case any unmodif...
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How to convert an NSTimeInterval (seconds) into minutes

...Calendar currentCalendar]; // Create the NSDates NSDate *date1 = [[NSDate alloc] init]; NSDate *date2 = [[NSDate alloc] initWithTimeInterval:theTimeInterval sinceDate:date1]; // Get conversion to months, days, hours, minutes unsigned int unitFlags = NSHourCalendarUnit | NSMinuteCalendarUnit | NSD...
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Passing a 2D array to a C++ function

... What about passing dynamically allocated arrays to functions in C++? In C11 standard it can be done for statically and dynamically allocated arrays like that fn(int col,int row, int array[col][row]): stackoverflow.com/questions/16004668/… I have made the...
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Undefined reference to static class member

...me figuring out that if the class definition is in a header file, then the allocation of the static variable should be in the implementation file, not the header. – shanet Jul 14 '12 at 3:06 ...
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Is there a way to cause git-reflog to show a date alongside each entry?

...ed-by: Jeff King (peff). (Merged by Junio C Hamano -- gitster -- in commit 0d32799, 08 Aug 2016) The rev-list options is updated: The reflog designator in the output may be shown as ref@{Nth} (where Nth is the reverse-chronological index in the reflog) or as ref@{timestamp} (with the timestam...