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Subtract days from a DateTime

... That error usually occurs when you try to subtract an interval from DateTime.MinValue or you want to add something to DateTime.MaxValue (or you try to instantiate a date outside this min-max interval). Are you sure you're not assi...
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Remove final character from string [duplicate]

...is empty. Well, it will return an empty string still, but you won't get an error. – kindall Mar 18 '13 at 13:58 1 ...
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How to check if two arrays are equal with JavaScript? [duplicate]

...eProperties to attach to Array.prototype, since that would fail with a key error if we passed in an undefined value (that is however a fine design decision if you want to do so). This only answers OPs original question. function arraysEqual(a,b) { /* Array-aware equality checker: ...
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What is The Rule of Three?

... into trouble: "I pushed a person into a vector and now I get crazy memory errors!" Remember that by default, copying an object means copying its members, but copying the name member merely copies a pointer, not the character array it points to! This has several unpleasant effects: Changes via a ca...
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Multiple INSERT statements vs. single INSERT with multiple VALUES

... (the sort in the plan only has one ORDER BY column) and no divide by zero error is raised. If duplicates are added to the table then the sort operator shows two order by columns and the expected error is raised. share ...
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What is in your Mathematica tool bag? [closed]

... to address when implementing a full solution of this kind (like capturing error messages properly), but one must appreciate the fact that it is not only possible to do things like this, but practical. On a personal note, it is features like this that makes the notebook interface the center of my p...
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What is “entropy and information gain”?

...rees (nor is it guaranteed to be globally-optimal one w.r.t classification error). This is in fact an NP-complete problem... – Amro May 29 '15 at 15:16 1 ...
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What is the purpose of Flask's context stacks?

... knows about the app application, but during create_all() it will throw an error complaining about there not being an application context. This error is justified; you never told Flask what application it should be dealing with when running the create_all method. You might be wondering why you don'...
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Why is it necessary to set the prototype constructor?

...TE: Much edited as my previous answer was confusingly written and had some errors that I missed in my rush to answer. Thanks to those who pointed out some egregious errors. Basically, it's to wire subclassing up correctly in Javascript. When we subclass, we have to do some funky things to make sure...
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c# why can't a nullable int be assigned null as a value [duplicate]

... Did you actually try this? It should give the error "Cannot implicitly convert type 'object' to 'int?'. An explicit conversion exists (are you missing a cast?)" – Ben Voigt Sep 7 '16 at 18:01 ...