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Use email address as primary key?

...an't say that a proposed key is not unique based on hypotheticals without knowing the context. e.g. from the phone company's point of view, a telephone number uniquely identifies a customer, by definition. Yes, you can say, "But what if there are two or three people who might answer when you call th...
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How can I remove an SSH key?

...p. If necessary you can also open seahorse and delete the keys from there. Now you should be able to do git push without a problem. Another workaround: What you really want to do is to turn off gpg-keyring-daemon altogether. Go to System --> Preferences --> Startup Applications, and unselec...
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Extract date (yyyy/mm/dd) from a timestamp in PostgreSQL

...estamp; timestamp --------------------- 2010-01-01 12:00:00 Now we'll cast it to a date: wconrad=# select '2010-01-01 12:00:00'::timestamp::date; date ------------ 2010-01-01 On the other hand you can use date_trunc function. The difference between them is that the latter ...
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Android buildscript repositories: jcenter VS mavencentral

...ted .gradle files with mavencentral() buildscript repositories whereas now there's jcenter() . 4 Answers ...
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How do I deploy Node.js applications as a single executable file? [duplicate]

Supposed I have written a Node.js application, and I now would like to distribute it. Of course, I want to make it easy for the user, hence I do not want him to install Node.js, run npm install and then manually type node app.js . ...
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How well is Unicode supported in C++11?

...le to focus on an encoding that was superseded over 20 years ago, I don't know‡. It's not like support for more encodings is bad or anything, but UCS-2 shows up too often here. I would say that char16_t is obviously meant for storing UTF-16 code units. However, this is one part of the s...
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How to work with Git branches and Rails migrations

... @pisaruk I know you answered this six years ago, but reading I'm curious what an example of a non-reversible migration would be. I'm having a hard time imagining a situation. I guess the simplest would be a dropped column containing a ...
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Why no ICloneable?

... ICloneable is considered a bad API now, since it does not specify whether the result is a deep or a shallow copy. I think this is why they do not improve this interface. You can probably do a typed cloning extension method, but I think it would require a diff...
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WatiN or Selenium? [closed]

...ution. Script creation tools are independent projects; there are 2 that I know of: Wax (Excel based, hosted on CodePlex) and WatiN Test Record (hosted on SourceForge). Neither is as robust as Selenium IDE. Very good IE support. Can attach and detach to/from running instances. Can access native wind...
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How to list imported modules?

...like 'import %s as %s' % (val.__name__, name) where the yield statement is now. – André C. Andersen May 7 '17 at 19:30 add a comment  |  ...