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What requirement was the tuple designed to solve?
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When writing programs it is extremely common to want to logically group together a set of values which do not have sufficient commonality to justify making a class.
Many programming languages allow you to logically group together a set of otherwise unrelated values without creating ...
How to get users to read error messages?
... how hard you try, do not use colours to identify the message...psychologically, it's akin to waving a red-flag to the bull!
Use neutral sounding words to convey minimal reaction and how to proceed!
It may be better to show a dialog box listing the neutral error message and to include a checkbox ind...
Why is it a bad practice to return generated HTML instead of JSON? Or is it?
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I'm a bit on both sides, actually :
When what I need on the javascript side is data, I use JSON
When what I need on the javascript side is presentation on which I will not do any calculation, I generally use HTML
The main advantage of using HTML is w...
How to display double quotes(") Symbol in a TextView?
...tring 2\" end message'
android:id="@+id/lblAboutPara3"
android:autoLink="web"/>
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What are the differences between the different saving methods in Hibernate?
...g of the methods. Mainly these are based on the API though as I don't use all of these in practice.
saveOrUpdate
Calls either save or update depending on some checks. E.g. if no identifier exists, save is called. Otherwise update is called.
save
Persists an entity. Will assign an identifier if...
What is ViewModel in MVC?
...y represents the data that you want to use, nothing else. You can imagine all the unnecessary code and validation if you have a domain model with 30 properties and you only want to update a single value. Given this scenario you would only have this one value/property in the view model and not all ...
Proper use of 'yield return'
...must have the complete list before returning.
By using yield-return, you really only need to have the next item before returning.
Among other things, this helps spread the computational cost of complex calculations over a larger time-frame. For example, if the list is hooked up to a GUI and the us...
CSRF protection with CORS Origin header vs. CSRF token
...ng), at least not, if we trust the W3C spec to be implemented correctly in all modern browsers (can we?)
At the end of the day you have to "trust" the client browser to safely store user's data and protect the client-side of the session. If you don't trust the client browser, then you should stop u...
Are (non-void) self-closing tags valid in HTML5?
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In HTML 4, <foo / (yes, with no > at all) means <foo> (which leads to <br /> meaning <br>> (i.e. <br>&gt;) and <title/hello/ meaning <title>hello</title>). This is an SGML rule that browsers did a very poor job of su...
Python subprocess.Popen “OSError: [Errno 12] Cannot allocate memory”
Note: This question was originally asked here but the bounty time expired even though an acceptable answer was not actually found. I am re-asking this question including all details provided in the original question.
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