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How to check if a value exists in a dictionary (python)

...t() [0.32004380226135254, 0.31716084480285645, 0.3171098232269287] EDIT: And in case you wonder why... the reason is that each of the above returns a different type of object, which may or may not be well suited for lookup operations: >>> type(d.viewvalues()) <type 'dict_values'> &...
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Jquery insert new row into table at a certain index

... You can use .eq() and .after() like this: $('#my_table > tbody > tr').eq(i-1).after(html); The indexes are 0 based, so to be the 4th row, you need i-1, since .eq(3) would be the 4th row, you need to go back to the 3rd row (2) and inse...
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How to declare Return Types for Functions in TypeScript

...eturn type is specified on the greet() function. Change the type to number and you'll get warnings. class Greeter { greeting: string; constructor (message: string) { this.greeting = message; } greet() : string { return "Hello, " + this.greeting; } } var greeter...
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Position Absolute + Scrolling

With the following HTML and CSS 4 Answers 4 ...
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How to check if all of the following items are in a list?

...nificantly different than "less than or equal to". It's unusual for the standard library does this--it smells like legacy API to me. Use the equivalent and more clearly-named method, set.issubset. Note that you don't need to convert the argument to a set; it'll do that for you if needed. set(['a...
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Mocking a class: Mock() or patch()?

I am using mock with Python and was wondering which of those two approaches is better (read: more pythonic). 2 Answers ...
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Concatenate two string literals

... He writes that "the new idea is that we can use + to concatenate a string and a string literal - or, for that matter, two strings (but not two string literals). ...
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Grep regex NOT containing string

...p to check against a syslog file. They are usually matching an IP address and log entry; 3 Answers ...
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How do you round to 1 decimal place in Javascript?

...railing zeros // So, just make sure it is the last step before output, // and use a number format during calculations! EDIT: Add round with precision function... Using this principle, for reference, here is a handy little round function that takes precision... function round(value, precision) {...
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lock(new object()) — Cargo cult or some crazy “language special case”?

I'm reviewing some code written by a consultant, and while dozens of red flags have already popped up, I can't wrap my head around the following snippet: ...