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Can I use GDB to debug a running process?
Under linux, can I use GDB to debug a process that is currently running?
8 Answers
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How can I specify a branch/tag when adding a Git submodule?
How does git submodule add -b work?
12 Answers
12
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How do I copy a hash in Ruby?
I'll admit that I'm a bit of a ruby newbie (writing rake scripts, now). In most languages, copy constructors are easy to find. Half an hour of searching didn't find it in ruby. I want to create a copy of the hash so that I can modify it without affecting the original instance.
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How do you create a random string that's suitable for a session ID in PostgreSQL?
I'd like to make a random string for use in session verification using PostgreSQL. I know I can get a random number with SELECT random() , so I tried SELECT md5(random()) , but that doesn't work. How can I do this?
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What are the best practices for using a GUID as a primary key, specifically regarding performance?
I have an application that uses GUID as the Primary Key in almost all tables and I have read that there are issues about performance when using GUID as Primary Key. Honestly, I haven't seen any problem, but I'm about to start a new application and I still want to use the GUIDs as the Primary Keys, b...
Run an untrusted C program in a sandbox in Linux that prevents it from opening files, forking, etc.?
I was wondering if there exists a way to run an untrusted C program under a sandbox in Linux. Something that would prevent the program from opening files, or network connections, or forking, exec, etc?
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What does the function then() mean in JavaScript?
I’ve been seeing code that looks like:
12 Answers
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How efficient can Meteor be while sharing a huge collection among many clients?
Imagine the following case:
4 Answers
4
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Merge and interleave two arrays in Ruby
I have the following code:
11 Answers
11
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How do I check if a string is a number (float)?
What is the best possible way to check if a string can be represented as a number in Python?
33 Answers
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