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Which SQL query is faster? Filter on Join criteria or Where clause?
...it reduces the result set at the soonest possible moment, but I don't know for sure.
9 Answers
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Perform commands over ssh with Python
...t you want at first, but your needs evolve. You end up changing the helper for the new use case, which changes behavior of the older existing usage. Plan accordingly.
– Scott Prive
Apr 20 '17 at 14:27
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Abort makefile if variable not set
...re going to test many variables, it's worth defining an auxiliary function for that:
# Check that given variables are set and all have non-empty values,
# die with an error otherwise.
#
# Params:
# 1. Variable name(s) to test.
# 2. (optional) Error message to print.
check_defined = \
$(stri...
What are some good Python ORM solutions? [closed]
I'm evaluating and looking at using CherryPy for a project that's basically a JavaScript front-end from the client-side (browser) that talks to a Python web service on the back-end. So, I really need something fast and lightweight on the back-end that I can implement using Python that then speaks to...
How do I find the location of Python module sources?
How do I learn where the source file for a given Python module is installed? Is the method different on Windows than on Linux?
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What is the best practice for “Copy Local” and with project references?
... improve build times. I think that "Copy Local" is wasteful in many cases for us, but I am wondering about best practices.
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bpftrace教程【官方】 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...ore a start timestamp to each. How? We could construct a unique identifier for each read, and use that as the key. But because kernel threads can only be executing one syscall at a time, we can use the thread ID as the unique identifier, as each thread cannot be executing more than one.
nsecs: 自...
What are the best JVM settings for Eclipse? [closed]
What are the best JVM settings you have found for running Eclipse?
16 Answers
16
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Can I zip more than two lists together in Scala?
...t case, it is not possible to do what the question wants, unless you reach for HLists and the like.
– copumpkin
May 3 '16 at 12:54
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How to get a variable name as a string in PHP?
...s to work so I've changed it to that.
function print_var_name($var) {
foreach($GLOBALS as $var_name => $value) {
if ($value === $var) {
return $var_name;
}
}
return false;
}
Edit: to be clear, there is no good way to do this in PHP, which is probably be...