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Advantage of switch over if-else statement
What's the best practice for using a switch statement vs using an if statement for 30 unsigned enumerations where about 10 have an expected action (that presently is the same action). Performance and space need to be considered but are not critical. I've abstracted the snippet so don't hate m...
Difference between \n and \r?
What’s the difference between \n (newline) and \r (carriage return)?
10 Answers
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Error : BinderProxy@45d459c0 is not valid; is your activity running?
What is this error... i haven't found any discussion on this error in the stackoverflow community Detailed :-
9 Answers
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Why use pointers? [closed]
...haracter (\0) were found. And this is where things start to get dangerous. What if you accidentally try and print a variable of the type integer instead of a char pointer with the %s formatter?
char* a = "Hello";
int b = 120;
printf("Second char is: %s", b);
This would print whatever is found on ...
(Built-in) way in JavaScript to check if a string is a valid number
...N These last two may be different
parseInt('12a5') // 12 from what you expected to see.
Floats
Bear in mind that, unlike +num, parseInt (as the name suggests) will convert a float into an integer by chopping off everything following the decimal point (if you want to use parseInt() b...
Test if remote TCP port is open from a shell script
...1 bash -c 'cat < /dev/null > /dev/tcp/google.com/81'
$ echo $?
124
What's happening here is that timeout will run the subcommand and kill it if it doesn't exit within the specified timeout (1 second in the above example). In this case bash is the subcommand and uses its special /dev/tcp hand...
Download old version of package with NuGet
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Dependency info and examining what other properties are available: Get-Package -ListAvailable [-Source X] -Filter Common.Logging -AllVersions | select version, dependencies (or '| get-member' to see all the properties)
– Curtis Yallo...
How do you run a single test/spec file in RSpec?
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Now that's what I call a good answer. Why isn't it marked as "Answer"?
– gmile
May 17 '10 at 14:12
1
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Add Variables to Tuple
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What benefit is there to including the trailing comma?
– Splic
May 25 '18 at 20:16
15
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How to check if an object is an array?
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For what it's worth Object.prototype.string.call(obj) can be spoofed if the object has Symbol.toStringTag on it. That said I am not aware of any environment that ships Symbol.toStringTag but not Array.isArray so this seems safe.
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