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Create module variables in Ruby
Is there any way to create a variable in a module in Ruby that would behave similar to a class variable? What I mean by this is that it would be able to be accessed without initializing an instance of the module, but it can be changed (unlike constants in modules).
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Permanently adding a file path to sys.path in Python
..., so I decided to add example_file.py to sys.path and import this file in another file to use the file. To do so, I ran the following in IPython.
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What is ng-transclude?
I have seen a number of questions on StackOverflow discussing ng-transclude, but none explaining in layman's terms what it is.
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datetime.parse and making it work with a specific format
I have a datetime coming back from an XML file in the format:
2 Answers
2
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Matplotlib connect scatterplot points with line - Python
I have two lists, dates and values. I want to plot them using matplotlib. The following creates a scatter plot of my data.
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Conditional import of modules in Python
In my program I want to import simplejson or json based on whether the OS the user is on is Windows or Linux. I take the OS name as input from the user. Now, is it correct to do the following?
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How to validate an email address in PHP
..._var() function:
if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
// invalid emailaddress
}
Additionally you can check whether the domain defines an MX record:
if (!checkdnsrr($domain, 'MX')) {
// domain is not valid
}
But this still doesn't guarantee that the mail exists. The only wa...
Can I compile all .cpp files in src/ to .o's in obj/, then link to binary in ./?
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This is pretty easy, unless you don't need to generalize
try something like the code below (but replace space indentation with tabs near g++)
SRC_DIR := .../src
OBJ_DIR := .../obj
SRC_FILES := $(wildcard $(SRC_DIR)/*.cpp)
OBJ_FILES := $(patsubst $(SRC_DIR)/%.cpp,$(OBJ_DIR)/%.o,$(SRC_FILES))...
How can one see content of stack with GDB?
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info frame to show the stack frame info
To read the memory at given addresses you should take a look at x
x/x $esp for hex x/d $esp for signed x/u $esp for unsigned etc. x uses the format syntax, you could also take a look ...
Fastest way to extract frames using ffmpeg?
Hi I need to extract frames from videos using ffmpeg.. Is there a faster way to do it than this:
6 Answers
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