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Why prefer two's complement over sign-and-magnitude for signed numbers?
...enting numbers, they would be 0010 and 1001, respectively (I'm sticking to 4 bits for size). In the two's complement way, they are 0010 and 1111. Now, let's say I want to add them.
Two's complement addition is very simple. You add numbers normally and any carry bit at the end is discarded. So they'...
How to generate random SHA1 hash to use as ID in node.js?
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4 Answers
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Active
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Bash Templating: How to build configuration files from templates with Bash?
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64
You can use this:
perl -p -i -e 's/\$\{([^}]+)\}/defined $ENV{$1} ? $ENV{$1} : $&/eg' < ...
Why aren't variable-length arrays part of the C++ standard?
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jchamp
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answered Dec 11 '09 at 10:28
Johannes Schaub - litbJohannes Schau...
git-svn: how do I create a new svn branch via git?
...swer like this:
Copying https://scm-server.com/svn/portal/trunk at r8914 to https://scm-server.com/svn/portal/branches/auth_bug...
And without the -n switch the server probably adds something like:
Found possible branch point: https://scm-server.com/svn/portal/trunk => https://scm-serve...
How to check if a stored procedure exists before creating it
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answered Jan 15 '10 at 14:22
QuassnoiQuassnoi
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Linux command (like cat) to read a specified quantity of characters
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194
head works too:
head -c 100 file # returns the first 100 bytes in the file
..will extract th...
Polymorphism in C++
...onversions allow code such as:
double a(double x) { return x + 2; }
a(3.14);
a(42);
Applying the earlier test:
To be polymorphic, [a()] must be able to operate with values of at least two distinct types (e.g. int and double), finding and executing type-appropriate code.
a() itself runs cod...
How to convert JSON to CSV format and store in a variable
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154
A more elegant way to convert json to csv is to use the map function without any framework:
var...
How to easily map c++ enums to strings
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MSaltersMSalters
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