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Error: free(): invalid next size (fast):
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It means that you have a memory error. You may be trying to free a pointer that wasn't allocated by malloc (or delete an object that wasn't created by new) or you may be trying to free/delete such an object more than once. You may be overflowing a buffer or otherwise writing to memor...
How to Get True Size of MySQL Database?
...length + index_length ) / 1024 / 1024 "database size in MB",
sum( data_free )/ 1024 / 1024 "free space in MB"
FROM information_schema.TABLES
GROUP BY table_schema;
Or in a single line for easier copy-pasting:
SELECT table_schema "database name", sum( data_length + index_length ) / 1024 / 102...
What is a Context Free Grammar?
Can someone explain to me what a context free grammar is? After looking at the Wikipedia entry and then the Wikipedia entry on formal grammar, I am left utterly and totally befuddled. Would someone be so kind as to explain what these things are?
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Best PHP IDE for Mac? (Preferably free!) [closed]
I need to find a good PHP IDE for Mac , but would prefer a free one.
3 Answers
3
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What's the best free C++ profiler for Windows? [closed]
...rofiler in order to find the bottleneck in my C++ code. I'd like to find a free, non-intrusive, and good profiling tool. I'm a game developer, and I use PIX for Xbox 360 and found it very good, but it's not free. I know the Intel VTune , but it's not free either.
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What's a good (free) visual merge tool for Git? (on windows) [closed]
...e comments:
If you guys happen to use Visual Studio (Community Edition is free), try the tool that is shipped with it: vsDiffMerge.exe. It's really awesome and easy to use.
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SQL Client for Mac OS X that works with MS SQL Server [closed]
...QL
Navicat
Valentina Studio
TablePlus
Java-Based
Oracle SQL Developer (free)
SQuirrel SQL (free, open source)
Razor SQL
DB Visualizer
DBeaver (free, open source)
SQL Workbench/J (free, open source)
JetBrains DataGrip
Metabase (free, open source)
Netbeans (free, open source, full development envi...
Recommended add-ons/plugins for Microsoft Visual Studio [closed]
...recommend any good add-ons or plugins for Microsoft Visual Studio ?
Freebies are preferred, but if it is worth the cost then that's fine.
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What are Runtime.getRuntime().totalMemory() and freeMemory()?
...ct meaning of Runtime.getRuntime().totalMemory() , Runtime.getRuntime().freeMemory() , and Runtime.getRuntime().maxMemory() is.
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Why aren't python nested functions called closures?
...all the variables available in that context.
If a function does not use free variables it doesn't form a closure.
If there is another inner level which uses free variables -- all previous levels save the lexical environment ( example at the end )
function attributes func_closure in python < 3...