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SQLAlchemy: What's the difference between flush() and commit()?
...ow the original question actually wanted to know about the impact of flush vs. commit for memory purposes. As the ability to persist or not is something the database offers (I think), simply flushing should be sufficient to offload to the database - although committing shouldn't hurt (actually proba...
Is std::vector so much slower than plain arrays?
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community wiki
12 revs, 2 users 99%Loki Astari
48
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Why not use tables for layout in HTML? [closed]
...Is a table less maintainable? I think using a table is easier than using divs and css.
The majority of professional web developers seem to oppose you[citation needed]. That tables are in fact less maintainable should be obvious. Using tables for layout means that changing the corporate layout will...
What is the difference between compile and link function in angularjs
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Best explanation on compile vs link.
– Nexus23
Jan 19 '15 at 16:30
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Why do x86-64 instructions on 32-bit registers zero the upper part of the full 64-bit register?
... @Nubok: Sure, they could have added an encoding of movzx / movsx that takes an immediate argument. Most of the time it's more convenient to have the upper bits zeroed, so you can use a value as an array index (because all regs have to be the same size in an effective address: [rsi + e...
How do you use bcrypt for hashing passwords in PHP?
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community wiki
24 revs, 13 users 77%Andrew Moore
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Why should I use core.autocrlf=true in Git?
... line-endings or electing not to normalize the line-endings works fine (as VS still displays it correctly the offending lines will have been deleted once the conflict has been resolved).
– Rich
Jan 16 '12 at 16:50
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How can I get a count of the total number of digits in a number?
... platforms, on a 64-bit Intel Processor machine, with Windows 10, and with VS2017 v.15.9.17. The following 4 cases have the same effect on performance results:
.NET Framework (x86)
Platform = x86
Platform = AnyCPU, Prefer 32-bit is checked in project settings
.NET Framework (x64)
Platform = x...
Best practices for circular shift (rotate) operations in C++
...h>, while gcc require <x86intrin.h>. An #ifdef takes care of gcc vs. icc, but clang doesn't seem to provide them anywhere, except in MSVC compatibility mode with -fms-extensions -fms-compatibility -fms-compatibility-version=17.00. And the asm it emits for them sucks (extra masking and a C...
Big-O for Eight Year Olds? [duplicate]
...0 | 10000
So take quicksort which is O(n log(n)) vs bubble sort which is O(n^2). When sorting 10 things, quicksort is 3 times faster than bubble sort. But when sorting 100 things, it's 14 times faster! Clearly picking the fastest algorithm is important then. When you ge...