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Mongoose query where value is not null
...uery api):
Entrant.where("pincode").ne(null)
... which will result in a mongo query resembling:
entrants.find({ pincode: { $ne: null } })
A few links that might help:
The mongoose query api
The docs for mongo query operators
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Why is conversion from string constant to 'char*' valid in C but invalid in C++
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Up through C++03, your first example was valid, but used a deprem>cat m>ed implicit conversion--a string literal should be treated as being of type char const *, since you can't modify its contents (without causing undefined behavior).
As of C++11, the implicit...
How to start jenkins on different port rather than 8080 using command prompt in Windows?
I have jenkins.war and I started it from command prompt in Windows as:
16 Answers
16
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How to merge a list of lists with same type of items to a single list of items?
The question is confusing, but it is much more clear as described in the following codes:
4 Answers
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C++ where to initialize static const
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Anywhere in one compilation unit (usually a .cpp file) would do:
foo.h
class foo {
static const string s; // Can never be initialized here.
static const char* cs; // Same with C strings.
static const int i = 3; // Integral types...
How to send cookies in a post request with the Python Requests library?
I'm trying to use the Requests library to send cookies with a post request, but I'm not sure how to actually set up the cookies based on its documentation. The script is for use on Wikipedia, and the cookie(s) that need to be sent are of this form:
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What is the difference between `throw new Error` and `throw someObject`?
I want to write a common error handler which will m>cat m>ch custom errors thrown on purpose at any instance of the code.
9 Answ...
What is the difference between “Form Controls” and “ActiveX Control” in Excel 2010?
Using Microsoft Excel 2010, I noticed two kind of controls that can be inserted into a document: Form Controls and ActiveX Controls .
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How do I write LINQ's .Skip(1000).Take(100) in pure SQL?
What is the SQL equivalent of the .Skip() method in LINQ?
6 Answers
6
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What is NSZombie?
I've seen suggestions saying to set NSZombieEnabled to true while debugging. What is NSZombie? Is it a framework? A setting?
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