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Rails check if yield :area is defined in content_for
...ring at the layout level based on the actual template has defined content_for(:an__area) , any idea how to get this done?
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How do you query for “is not null” in Mongo?
...n empty string which means "", it will be returned.It is the same behavior for
db.collection_name.find({"filed_name":{$ne:null}});
Extra validation:
Okay, so we are not finished yet we need an extra condition.
db.collection_name.
find({ "field_name":{$type:2},$where:"this.field_name.length >...
pandas dataframe columns scaling with sklearn
...min_max_scaler to some of the columns. Ideally, I'd like to do these transformations in place, but haven't figured out a way to do that yet. I've written the following code that works:
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Basic http file downloading and saving to disk in python?
I'm new to Python and I've been going through the Q&A on this site, for an answer to my question. However, I'm a beginner and I find it difficult to understand some of the solutions. I need a very basic solution.
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When do I use the PHP constant “PHP_EOL”?
...s, PHP_EOL is ostensibly used to find the newline character in a cross-platform-compatible way, so it handles DOS/Unix issues.
Note that PHP_EOL represents the endline character for the current system. For instance, it will not find a Windows endline when executed on a unix-like system.
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Python extract pattern matches
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You need to capture from regex. search for the pattern, if found, retrieve the string using group(index). Assuming valid checks are performed:
>>> p = re.compile("name (.*) is valid")
>>> result = p.search(s)
>>> result
<_sre.SRE_Matc...
Determine project root from a running node.js application
...unning node.js process? Something like the equivalent of Rails.root , but for Node.js. I'm looking for something that is as predictable and reliable as possible.
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How do I show the value of a #define at compile-time?
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BOOST_PP_STRINGIZE seems a excellent solution for C++, but not for regular C.
Here is my solution for GNU CPP:
/* Some test definition here */
#define DEFINED_BUT_NO_VALUE
#define DEFINED_INT 3
#define DEFINED_STR "ABC"
/* definition to expand macro then apply to prag...
Team city unmet requirement: MSBuildTools12.0_x86_Path exists
...from MSBuild Download.
edit: the answer link was broken. Here is the link for Microsoft Build Tools 2015 (most recently until today):
https://www.microsoft.com/en-us/download/details.aspx?id=48159
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Python function overloading
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What you are asking for is called multiple dispatch. See Julia language examples which demonstrates different types of dispatches.
However, before looking at that, we'll first tackle why overloading is not really what you want in python.
Why N...