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What is the difference between typeof and instanceof and when should one be used vs. the other?
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@Luke generally a bad idea to use "new String" like this. that creates a "string object" rather than a string primitive. see section here developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/…
– Colin D
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How to export all collections in MongoDB?
I want to export all collections in MongoDB by the command:
26 Answers
26
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Invert “if” statement to reduce nesting
...cked this code from the refactoring catalog. This specific refactoring is called: Replace Nested Conditional with Guard Clauses.
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Convert a Git folder to a submodule retrospectively?
...d after a while it becomes clear that some component of the project is actually useful as a standalone component (a library, perhaps). If you've had that idea from early on, then there's a fair chance that most of that code is in its own folder.
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How to determine whether code is running in DEBUG / RELEASE build?
...EBUG changed to another variable name such as DEBUG_MODE.
then conditionally code for DEBUG in your source files
#ifdef DEBUG
// Something to log your sensitive data here
#else
//
#endif
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How to initialize a vector in C++ [duplicate]
...p;arr[0]+N; }
And then you can do this without having to repeat the size all over:
int vv[] = { 12,43 };
std::vector<int> v(begin(vv), end(vv));
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How to find memory leak in a C++ code/project?
...e software tools
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Understand the operator basics. The C++ operator new allocates heap memory. The delete operator frees heap memory. For every new, you should use a delete so that you free the same memory you allocated:
char* str = new char [30]; // Allocate 30 bytes to house a string.
delete ...
Converting XML to JSON using Python?
... It's already been mentioned in newer answers. It still only covers a small subset of valid XML constructs, but probably the majority of what people use in practice.
– Dan Lenski
Dec 5 '18 at 11:48
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What are attributes in .NET?
...ur objects/methods/properties.
For example I might declare an Attribute called: DisplayOrder so I can easily control in what order properties should appear in the UI. I could then append it to a class and write some GUI components that extract the attributes and order the UI elements appropriately...
How to put multiple statements in one line?
...pproximate what you want.
As for the try ... except thing: It would be totally useless without the except. try says "I want to run this code, but it might throw an exception". If you don't care about the exception, leave away the try. But as soon as you put it in, you're saying "I want to handle a ...