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Unique random string generation
I'd like to generate random unique strings like the ones being generated by MSDN library.( Error Object ), for example. A string like 't9zk6eay' should be generated.
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What unique features does Firebug have that are not built-in to Firefox?
...ssing several command line commands.
Can't add cookies, just edit existing ones.
No always-on mode and activation per domain (instead of per tab).
There are more things missing, which are tracked in a bug report filed for all the gaps between Firebug and the Firefox DevTools.
Firebug integration
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Interface vs Base class
... for inheritance.
Consequently, because you can usually only inherit from one abstract class (in most statically typed OO languages that is... exceptions include C++) but be able to implement multiple interfaces, it allows you to construct objects in a strictly as required basis.
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Closing JDBC Connections in Pool
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When using Connection Pool, should one close the Connection at the end? If so, isn't the purpose of pooling lost? And if not, how does the DataSource know when a particular instance of Connection is freed up and can be reused? I am a little confused on this on...
Design Pattern for Undo Engine
...ting a structural modeling tool for a civil enginering application. I have one huge model class representing the entire building, which include collections of nodes, line elements, loads, etc. which are also custom classes.
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What are the differences in die() and exit() in PHP?
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aliases allows programmers to use the one which is comfortable with. I remember exit better than die. Some others remember die better than exit.
– mauris
Nov 25 '09 at 6:35
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How to convert a PNG image to a SVG? [closed]
...e.svg" # PNM to SVG
rm "$File.pnm" # Remove PNM
One-line command
If you want to convert many files, you can also use the following one-line command:
( set -x ; for f_png in *.png ; do f="${f_png%.png}" ; convert "$f_png" "$f.pnm" && potrace "$f.pnm" -s -o "$f.svg...
Foreign Key naming scheme
... involved in the key, so it makes it easy to see which tables a particular one (the first one named) depends on (the second one named). In this scenario the complete set of keys would be:
FK_task_user
FK_note_task
FK_note_user
So you can see that tasks depend on users, and notes depend on both ta...
Should the hash code of null always be zero, in .NET
...System.Collections.Generic.HashSet<> accept null as a set member, one can ask what the hash code of null should be. It looks like the framework uses 0 :
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Remove spaces from std::string in C++
...space), str.end());
We should also note that remove_if will make at most one copy of the data. Here is a sample implementation:
template<typename T, typename P>
T remove_if(T beg, T end, P pred)
{
T dest = beg;
for (T itr = beg;itr != end; ++itr)
if (!pred(*itr))
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