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- Performance difference of if if vs if else if - Stack Overflow
@xbonez: Never underestimate compilers I wouldn't be surprised if both pieces of code ended up with the same assembly (in C, where == cannot be overloaded) as the compiler could infer that only one of the conditions can be true (assuming that the if-branch does not modify the value being tested) That is, assuming that the result of both versions is the same and types are basic types, the
- java - (AND) and || (OR) in IF statements - Stack Overflow
Java has 5 different boolean compare operators: , , |, ||, ^ and are "and" operators, | and || "or" operators, ^ is "xor" The single ones will check every parameter, regardless of the values, before checking the values of the parameters The double ones will first check the left parameter and its value and if true (||) or false ( ) leave the second one untouched Sound compilcated? An
- 403 Forbidden vs 401 Unauthorized HTTP responses - Stack Overflow
Edit: RFC2616 is obsolete, see RFC9110 401 Unauthorized: If the request already included Authorization credentials, then the 401 response indicates that authorization has been refused for those credentials 403 Forbidden: The server understood the request, but is refusing to fulfill it From your use case, it appears that the user is not authenticated I would return 401
- python - How to exit an if clause - Stack Overflow
What sorts of methods exist for prematurely exiting an if clause? There are times when I'm writing code and want to put a break statement inside of an if clause, only to remember that those can o
- How do I check whether a file exists without exceptions?
Note: your program will not be 100% robust if it cannot handle the case where a file already exists or doesn't exist at the time you actually try to open or create it respectively The filesystem is concurrently accessible to multiple programs, so the existance-check you did prior to these actions might already be outdated by the time your program acts on it
- Check if a given key already exists in a dictionary
I wanted to test if a key exists in a dictionary before updating the value for the key I wrote the following code: if 'key1' in dict keys(): print "blah" else: print "boo" I think this is not
- r - if - else if - else statement and brackets - Stack Overflow
I understand the usual way to write an "if - else if" statement is as follow:
- How do I find out which process is listening on a TCP or UDP port on . . .
PowerShell TCP Get-Process -Id (Get-NetTCPConnection -LocalPort YourPortNumberHere) OwningProcess This shows several columns of information about the process The Id column is the PID you need if you want to kill it with taskkill PID <pid> UDP Get-Process -Id (Get-NetUDPEndpoint -LocalPort YourPortNumberHere) OwningProcess cmd netstat -a -b (Add -n to stop it trying to resolve hostnames
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