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Concept behind these four lines of tricky C code
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The number 7709179928849219.0 has the following binary representation as a 64-bit double:
01000011 00111011 01100011 01110101 01010011 00101011 00101011 01000011
+^^^^^^^ ^^^^---- -------- -------- -------- -------- -------- --------
+...
Meaning of “[: too many arguments” error from if [] (square brackets)
...:
VARIABLE=$(/some/command);
# returns "hello world"
if [ $VARIABLE == 0 ]; then
# fails as if you wrote:
# if [ hello world == 0 ]
fi
The same will be true for any function call that puts down a string containing spaces or other special characters.
Easy fix
Wrap the variable output i...
Check if a string contains a substring in SQL Server 2005, using a stored procedure
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401
CHARINDEX() searches for a substring within a larger string, and returns the position of the ma...
Java rounding up to an int using Math.ceil
Why does it still return 4? 157/32 = 4.90625 , I need to round up, I've looked around and this seems to be the right method.
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How do I pass parameters into a PHP script through a webpage?
...rg2
... and then accessing them in the script thusly:
<?php
// $argv[0] is '/path/to/wwwpublic/path/to/script.php'
$argument1 = $argv[1];
$argument2 = $argv[2];
?>
What you need to be doing when passing arguments through HTTP (accessing the script over the web) is using the query string a...
Is ASCII code 7-bit or 8-bit?
...told me ASCII is 8-bit character coding scheme. But it is defined only for 0-127 codes which means it can be fit into 7-bits. So can't it be argued that ASCII bit is actually 7-bit code?
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How do I reset a sequence in Oracle?
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Here is a good procedure for resetting any sequence to 0 from Oracle guru Tom Kyte. Great discussion on the pros and cons in the links below too.
tkyte@TKYTE901.US.ORACLE.COM>
create or replace
procedure reset_seq( p_seq_name in varchar2 )
is
l_val number;
begin
exe...
Is it possible to read from a InputStream with a timeout?
...vailable()
It is always acceptable for System.in.available() to return 0.
I've found the opposite - it always returns the best value for the number of bytes available. Javadoc for InputStream.available():
Returns an estimate of the number of bytes that can be read (or skipped over)
from thi...
Is there a way to make a link clickable in the OSX Terminal?
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edited Jul 7 '12 at 15:06
Joshua Muheim
10.4k66 gold badges5858 silver badges116116 bronze badges
ans...
Cancellation token in Task constructor: why?
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Eliahu Aaron
3,15122 gold badges2020 silver badges3232 bronze badges
answered Sep 14 '10 at 21:38
Max GalkinMax Galkin
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