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Is there a more elegant way of adding an item to a Dictionary safely?

I need to add key/object pairs to a dictionary, but I of course need to first check if the key already exists otherwise I get a " key already exists in dictionary " error. The code below solves this but is clunky. ...
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Are “elseif” and “else if” completely synonymous?

Are elseif and else if completely synonymous, or is there a difference? 2 Answers ...
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Character Limit in HTML

How do you impose a character limit on a text input in HTML? 6 Answers 6 ...
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What does void* mean and how to use it?

Today when I was reading others' code, I saw something like void *func(void* i); , what does this void* mean here for the function name and for the variable type, respectively? ...
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what is the difference between ?:, ?! and ?= in regex?

I searched for the meaning of these expressions but couldn't understand the exact difference between them. This is what they say: ...
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How do I set a textbox's text to bold at run time?

I'm using Windows forms and I have a textbox which I would occassionally like to make the text bold if it is a certain value. ...
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Is there any way to create a blank solution (.sln) file first and then add projects?

Visual studio has always annoyed me because (to my knowledge) you cannot create a solution first and then add new/existing projects to it. The only way I know how to create a solution is to create a project and specify the solution name for it. ...
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Why do you need to create a cursor when querying a sqlite database?

I'm completely new to Python's sqlite3 module (and SQL in general for that matter), and this just completely stumps me. The abundant lack of descriptions of cursor objects (rather, their necessity) also seems odd. ...
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Is it safe to assume strict comparison in a JavaScript switch statement?

I have a variable that can either be boolean false , or an integer (including 0). I want to put it in a switch statement like: ...
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How to delete a record in Django models?

I want to delete a particular record. Such as 5 Answers 5 ...