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How can i tell if an object has a key value observer attached
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The only way to do this is to set a flag when you add an observer.
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SSL Error When installing rubygems, Unable to pull data from 'https://rubygems.org/
I am trying to do the Michael Hartl tutorial. When I attempt to install rails 3.2.14 in my gemset, I get the following issue:
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to_string is not a member of std, says g++ (mingw)
I am making a small vocabulary remembering program where words would would be flashed at me randomly for meanings. I want to use standard C++ library as Bjarne Stroustroup tells us, but I have encountered a seemingly strange problem right out of the gate.
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Is there a performance gain in using single quotes vs double quotes in ruby?
Do you know if using double quotes instead of single quotes in ruby decreases performance in any meaningful way in ruby 1.8 and 1.9.
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How can I format my grep output to show line numbers at the end of the line, and also the hit count?
I'm using grep to match string in a file. Here is an example file:
8 Answers
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Problems with pip install numpy - RuntimeError: Broken toolchain: cannot link a simple C program
I'm trying to install numpy (and scipy and matplotlib) into a virturalenv.
11 Answers
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Use different Python version with virtualenv
...create a venv with a specific Python version is by using that version when setting it up. For example: python3.5 -m venv venv
– tanius
Oct 21 '19 at 21:35
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Why does integer division in C# return an integer and not a float?
Does anyone know why integer division in C# returns an integer and not a float?
What is the idea behind it? (Is it only a legacy of C/C++?)
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Can anyone explain this strange behavior with signed floats in C#?
Here is the example with comments:
11 Answers
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PostgreSQL: How to make “case-insensitive” query
...name::citext);. (But see below.)
Use a case-insensitive collation. This is set when you initialize a
database. Using a case-insensitive collation means you can accept
just about any format from client code, and you'll still return
useful results. (It also means you can't do case-sensitive queries. D...