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@Basic(optional = false) vs @Column(nullable = false) in JPA
What's the difference between @Basic(optional = false) and @Column(nullable = false) in JPA persistence?
2 Answers
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Global variables in Javascript across multiple files
...pers.js file. Simply create a script tag above the include for helpers.js and define it there.
<script type='text/javascript' >
var myFunctionTag = false;
</script>
<script type='text/javascript' src='js/helpers.js'></script>
...
<script type='text/javascript' ...
How to read a text file reversely with iterator in C#
I need to process a large file, around 400K lines and 200 M. But sometimes I have to process from bottom up. How can I use iterator (yield return) here? Basically I don't like to load everything in memory. I know it is more efficient to use iterator in .NET.
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'any' vs 'Object'
I am looking at TypeScript code and noticed that they use:
6 Answers
6
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Node.js/Express.js App Only Works on Port 3000
...a Node.js/Express.js app running on my server that only works on port 3000 and I'm trying to figure out why. Here's what I've found:
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Convert string to a variable name
...ttp://www.r-bloggers.com/converting-a-string-to-a-variable-name-on-the-fly-and-vice-versa-in-r/
To convert a string to a variable:
x <- 42
eval(parse(text = "x"))
[1] 42
And the opposite:
x <- 42
deparse(substitute(x))
[1] "x"
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List of Delphi language features and version in which they were introduced/deprecated
Before I begin, I would like to point out that I have honestly and genuinely searched repeatedly and exhaustively via Google for such a thing, and been unable to find one.
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How to manually expand a special variable (ex: ~ tilde) in bash
...ted this there have been far better answers than my admittedly rudimentary and pretty bad answer (I was young, don't kill me).
The other solutions in this thread are safer and better solutions. Preferably, I'd go with either of these two:
Charle's Duffy's solution
Håkon Hægland's solution
O...
How to set username and password for SmtpClient object in .NET?
...of the constructor, one uses info from web.config, one specifies the host, and one the host and port. But how do I set the username and password to something different from the web.config? We have the issue where our internal smtp is blocked by some high security clients and we want to use their smt...
What is the difference between allprojects and subprojects
...e tell me what exactly is the difference between the "allprojects" section and the "subprojects" one? Just the parent directory? Does anyone use both? If so, do you have general rules that determines what typically is put in each one?
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