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What does `m_` variable prefix mean?
... variables that are member variables. So when you're using them later, you don't need to see where they're defined to know their scope. This is also great if you already know the scope and you're using something like intelliSense, you can start with m_ and a list of all your member variables are sho...
Python subprocess/Popen with a modified environment
... slightly modified environment is a very common case. That's how I tend to do it:
8 Answers
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JS: iterating over result of getElementsByClassName using Array.forEach
I want to iterate over some DOM elements, I'm doing this:
11 Answers
11
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What is a reasonable code coverage % for unit tests (and why)? [closed]
...ode coverage should I aim
for?”
The great master replied:
“Don’t worry about coverage, just write some good tests.”
The programmer smiled, bowed, and
left.
...
Later that day, a second programmer
asked the same question.
The great master pointed at a pot o...
How to send a stacktrace to log4j?
...d get the following on the standard output (like, say, the console) if you do a e.printStackTrace() :
11 Answers
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How do I replace text in a selection?
...at I wanted. I finally found the answer I was looking for, on a mac if you do ⌘ + option + F it will bring up a Find-Replace bar at the bottom of your editor which is local to the file you have open.
There is an icon option which when hovered over says "In Selection" that you can select to find a...
Difference between rake db:migrate db:reset and db:schema:load
...migrate and rake db:reset is pretty clear in my head. The thing which I don't understand is how rake db:schema:load different from the former two.
...
Iterating each character in a string using Python
...
As Johannes pointed out,
for c in "string":
#do something with c
You can iterate pretty much anything in python using the for loop construct,
for example, open("file.txt") returns a file object (and opens the file), iterating over it iterates over lines in that file...
How do you effectively model inheritance in a database?
...orts, querying, multi-application use, business intelligence, etc.) then I do not recommend any kind of a simple mapping from objects to tables.
Many people think of a row in a database table as an entity (I spent many years thinking in those terms), but a row is not an entity. It is a proposition....
Executing multi-line statements in the one-line command-line?
...
you could do
echo -e "import sys\nfor r in range(10): print 'rob'" | python
or w/out pipes:
python -c "exec(\"import sys\nfor r in range(10): print 'rob'\")"
or
(echo "import sys" ; echo "for r in range(10): print 'rob'") | pyt...