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How do you make sure email you send programmatically is not automatically marked as spam?

This is a tricky one and I've always relied on techniques, such as permission-based emails (i.e. only sending to people you have permission to send to) and not using blatantly spamish terminology. ...
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mongodb group values by multiple fields

...takes an "pipeline" expression as an argument instead of the "localFields" and "foreignFields" options. This then allows a "self-join" with another pipeline expression, in which we can apply $limit in order to return the "top-n" results. db.books.aggregate([ { "$group": { "_id": "$addr", "...
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Errors: “INSERT EXEC statement cannot be nested.” and “Cannot use the ROLLBACK statement within an I

I have three stored procedures Sp1 , Sp2 and Sp3 . 12 Answers 12 ...
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Replacements for switch statement in Python?

... What if 'a' and 'b' match 1, and 'c' and 'd' match 2? – John Mee Apr 9 '10 at 7:57 14 ...
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How can I remove all objects but one from the workspace in R?

I have a workspace with lots of objects and I would like to remove all but one. Ideally I would like to avoid having to type rm(obj.1, obj.2... obj.n) . Is it possible to indicate remove all objects but these ones ? ...
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Any way to break if statement in PHP?

Is there any command in PHP to stop executing the current or parent if statement, same as break or break(1) for switch / loop . For example ...
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Add unique constraint to combination of two columns

I have a table and, somehow, the same person got into my Person table twice. Right now, the primary key is just an autonumber but there are two other fields that exist that I want to force to be unique. ...
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Determine Whether Integer Is Between Two Other Integers?

... integer is between two other integers (e.g. greater than/equal to 10000 and less than/equal to 30000 )? 11 Answers ...
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Verify if a point is Land or Water in Google Maps

..and then Google-maps "divide the waters from the waters" 18 Answers 18 ...
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How do I pre-populate a jQuery Datepicker textbox with today's date?

...Update: There are reports this no longer works in Chrome. This is concise and does the job (obsolete): $(".date-pick").datepicker('setDate', new Date()); This is less concise, utilizing chaining allows it to work in chrome (2019-06-04): $(".date-pick").datepicker().datepicker('setDate', new Dat...