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How to log something in Rails in an independent log file?
In rails I want to log some information in a different log file and not the standard development.log or production.log. I want to do this logging from a model class.
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How is the java memory pool divided?
I’m currently monitoring a Java application with jconsole. The memory tab lets you choose between:
4 Answers
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How can I test that a value is “greater than or equal to” in Jasmine?
I want to confirm that a value is a decimal (or 0), so the number should be greater than or equal to zero and less than 1.
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Measure time in Linux - time vs clock vs getrusage vs clock_gettime vs gettimeofday vs timespec_get?
...stand clearly how they are implemented and what are their return values in order to know in which situation I have to use them.
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How to revert a Git Submodule pointer to the commit stored in the containing repository?
...e a git submodule in my main git repo. As I understand it, the main repo stores a SHA value (somewhere...), pointing to the specific commit of the submodule that it is "linked to".
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How to prevent a background process from being stopped after closing SSH client in Linux
I'm working on a Linux machine through SSH (Putty). I need to leave a process running during the night, so I thought I could do that by starting the process in background (with an ampersand at the end of the command) and redirecting stdout to a file.
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Why historically do people use 255 not 256 for database field magnitudes?
...s set to have a magnitude of 255 characters, what is the traditional / historic reason why? I assume it's something to do with paging / memory limits, and performance but the distinction between 255 and 256 has always confused me.
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simulate background-size:cover on or
...onality of background-size:cover on an html element like <video> or <img> ?
18 Answers
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What's the point of malloc(0)?
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According to the specifications, malloc(0) will return either "a null pointer or a unique pointer that can be successfully passed to free()".
This basically lets you allocate nothing, but still pass the "artist" variable to a c...
What does auto&& tell us?
...aying: I will accept any initializer regardless of whether it is an lvalue or rvalue expression and I will preserve its constness. This is typically used for forwarding (usually with T&&). The reason this works is because a "universal reference", auto&& or T&&, will bind to a...