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Guards vs. if-then-else vs. cases in Haskell
...turn ()
handle (ExitFailure code)
| code < 0 = putStrLn . ("internal error " ++) . show . abs $ code
| otherwise = putStrLn . ("user error " ++) . show $ code
BTW. As a style tip, always make a newline after a = or before a | if the stuff after the =/| is too long for one line, o...
Static Classes In Java
... // MyStaticClass x = new MyStaticClass(); // results in compile time error
}
}
// A top-level Java class mimicking static class behavior
public final class MyStaticClass {
private MyStaticClass () { // private constructor
myStaticMember = 1;
}
private static int mySta...
Swift - How to convert String to Double
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Should use Double(myString) ?? 0.0 to avoid init errors
– Rami Alloush
Sep 16 at 3:54
I want...
callback to handle completion of pipe
...
Here's a solution that handles errors in requests and calls a callback after the file is written:
request(opts)
.on('error', function(err){ return callback(err)})
.pipe(fs.createWriteStream(filename))
.on('finish', function (err) {
ret...
SQLite - UPSERT *not* INSERT or REPLACE
...ould
Begin a transaction
Try an insert
Check for primary key violation error
if we got an error do the update
Commit
This way you avoid the select and you are transactionally sound on Sqlite.
share
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How can I get the full object in Node.js's console.log(), rather than '[Object]'?
...ike it would occur with DOM objects, for example. Stringify will throw an "Error: Converting circular structure to JSON".
– Ignacio Lago
Jan 17 '14 at 16:47
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Dependent DLL is not getting copied to the build output folder in Visual Studio
...n upgrade or remove). With this hack, at least you get a nice compile time error reminding you to remove this hack when you remove the dependency, and you still only need to update it in one place.
– jpmc26
Sep 21 '16 at 19:35
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Iterating over each line of ls -l output
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find is broken. Ioften get some bizarro error messages. it wants to give me help when the commandline is perfectly valid, and it seems like once it starts doing this, it won't stop until next reboot MAYBE. it sometimes seems random in nature concerning errors. not ...
How to add images in select list?
... @RousseauAlexandre checking the console on that other site I see 403 errors for author's content. I sent him a message about it since complaining here will not do any good.
– jerrygarciuh
Aug 27 '16 at 17:07
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Null coalescing in powershell
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@BrainSlugs83 The error you're seeing in strict mode is unrelated to the null coalescing options presented. It is just the standard, Powershell checking that a variable is defined first. If you set $myval = $null before doing the test, the er...