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count (non-blank) lines-of-code in bash
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You forgot the anchoring, so it includes wrong files. And an even simpler version with anchoring: find . | egrep '.\.c$|.\.h$' | xargs cat | sed '/^\s*$/d' | wc -l
– Mark Jeronimus
Dec 14 '17 at 16:06
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Git - Difference Between 'assume-unchanged' and 'skip-worktree'
...sed successfully in many environments.
The git update-index man page now includes:
Users often try to use the assume-unchanged and skip-worktree bits to tell Git to ignore changes to files that are tracked.
This does not work as expected, since Git may still check working tree files against ...
Does Go provide REPL?
...oRun) to run and print the output of the current buffer. You still have to include all the boilerplate code of a main Go file, but it still provides a convenient way to quickly test code snippets in your local environment.
HTH
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Postgres DB Size Command
...ollowing psql meta-command to get some details about a specified database, including its size:
\l+ <database_name>
And to get sizes of all databases (that you can connect to):
\l+
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Why is iostream::eof inside a loop condition (i.e. `while (!stream.eof())`) considered wrong?
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What does “%” (percent) do in PowerShell?
...l - Special Characters And Tokens provides description of multiple symbols including %
% (percentage)
1. Shortcut to foreach.
Task: Print all items in a collection.
Solution.
... | % { Write-Host $_ }
2. Remainder of division, same as Mod in VB.
Example:
5 % 2
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Referring to a Column Alias in a WHERE Clause
...er to field aliases in the WHERE clause. (Think of it as the entire SELECT including aliases, is applied after the WHERE clause.)
But, as mentioned in other answers, you can force SQL to treat SELECT to be handled before the WHERE clause. This is usually done with parenthesis to force logical order...
Object-orientation in C
...he sake of simplicity and flexibility: uniform object oriented programming including open classes, metaclasses, property metaclasses, generics, multimethods, delegation, ownership, exceptions, contracts and closures. There is a draft paper (PDF) that describes it.
Exception in C is a C89 implement...
C Macro definition to determine big endian or little endian machine?
...e put into a file called order32.h:
#ifndef ORDER32_H
#define ORDER32_H
#include <limits.h>
#include <stdint.h>
#if CHAR_BIT != 8
#error "unsupported char size"
#endif
enum
{
O32_LITTLE_ENDIAN = 0x03020100ul,
O32_BIG_ENDIAN = 0x00010203ul,
O32_PDP_ENDIAN = 0x01000302ul, ...
How Scalable is SQLite? [closed]
...es was an order of magnitude slower than MySQL without indexes, and I also included a bit about transactions in my second edit. I still think that the progression of the answer makes some sense - it shows my initial naive use of SQLite and how relatively bad the performance was. I expect that those ...