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What is the difference between syntax and semantics in programming languages?

...d before the first executable statement (this feature has been dropped in C99. C99 and latter allow mixed type declarations.) Semantics is about the meaning of the sentence. It answers the questions: is this sentence valid? If so, what does the sentence mean? For example: x++; //...
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Load data from txt with pandas

... Chrisji 29922 silver badges1313 bronze badges answered Feb 4 '14 at 7:53 pietrovismarapietrovismara ...
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Form onSubmit determine which submit button was pressed [duplicate]

... Peter BaileyPeter Bailey 99.9k2828 gold badges174174 silver badges198198 bronze badges ...
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Rails: Missing host to link to! Please provide :host parameter or set default_url_options[:host]

...arlos Castillo 2,86422 gold badges1111 silver badges99 bronze badges 17 ...
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Foreign Key to non-primary key

...eep track of the same room, and a soft-delete field, like RM_Status, where 99 means 'deleted', and <> 99 means 'active'. So when you create the first room, you insert RM_UID and RM_ApertureID as the same value as RM_UID. Then, when you terminate the room to a date, and re-establish it with ...
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How to get a list of file names in different lines

... Johan KotlinskiJohan Kotlinski 23k99 gold badges7070 silver badges9999 bronze badges ...
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Why does PEP-8 specify a maximum line length of 79 characters? [closed]

...y thinks that 79 is optimal, but there's no obvious gain in changing it to 99 or 119 or whatever your preferred line length is. I think the choices are these: follow the rule and find a worthwhile cause to battle for, or provide some data that demonstrates how readability and productivity vary with ...
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How do I create a list of random numbers without duplicates?

... This will return a list of 10 numbers selected from the range 0 to 99, without duplicates. import random random.sample(range(100), 10) With reference to your specific code example, you probably want to read all the lines from the file once and then select random lines from the saved list ...
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Is there a “do … while” loop in Ruby?

...close enough to do...while to cause problems. – user1992284 Jun 12 '13 at 9:54 4 ...
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Regular expression to match non-ASCII characters?

...39\u093D\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097F\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BD\u09CE\u09DC\u09DD\u09DF-\u09E1\u09F0\u09F1\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A72-\u0A74\u0A85-\u...