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What do two question marks together mean in C#?
...h;
else
FormsAuth = new FormsAuthenticationWrapper();
In English, it means "If whatever is to the left is not null, use that, otherwise use what's to the right."
Note that you can use any number of these in sequence. The following statement will assign the first non-null Answer# to Answer (if...
Disable assertions in Python
...ng>", line 1, in <module>
AssertionError
Note that by disable I mean it also does not execute the expression that follows it:
$ python -Oc "assert 1/0"
$ python -c "assert 1/0"
Traceback (most recent call last):
File "<string>", line 1, in <module>
ZeroDivisionError: integ...
Naming convention for unique constraint
...get a sequence number since there can be only one. The 2-char alpha suffix meanings are:
PK: Primary Key
AK: Alternate Key
FK: Foreign Key
IX: IndeX
CK: ChecK
DF: DeFault
I generally want to group metadata/system catalog data by the controlling object rather than by object type.
...
SBT stop run without exiting
...e, forked JVM, as described at Forking, then you can kill that JVM (by any means your operating system offers) without affecting sbt's JVM:
fork in run := true
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Check if a string matches a regex in Bash script
...ere an empty variable can be easily and accidentally introduced anytime by means like misspelling, I don't think allowing empty variables to be matched is a robust feature. Apparently the author of GNU expr agrees with me.
– Penghe Geng
Jul 9 '19 at 17:55
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REST HTTP status codes for failed validation or invalid duplicate
...ation, that's Wikipedia, i.e. someone's opinion on "what HTTP status codes mean"; note that the page essentialy says "this is what Apache means with 403, this is what IIS means with 403", and nowhere does it reference the official RFC. You seem to be repeating "403 means whatever Apache says". NOT. ...
Private vs Public in Cache-Control
... degree of security, it can still be seen by agents in the middle. It just means that no "honest" agent will give it to someone else instead of a freshly generated response.
– Jon Hanna
Aug 16 '10 at 11:31
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Python memory usage of numpy arrays
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This answer still creates an array, so I think you mean "without the need to convert from a list to an array". Although it is true that GWW's answer first creates a list and then converts it to an array, that's beside the point, since the OP already has an array... The point ...
How can I convert a file pointer ( FILE* fp ) to a file descriptor (int fd)?
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@Novelocrat: I didn't mean that there's no need to #include anything. I merely meant that it is always easy to find the name of the proper header for a standard function. I.e. it is not really critical to mention the exact header name in the answe...
Difference between solr and lucene
...requirements outweigh search customization requirements.
NOTE:
I don't mean that Solr is hard to customize. Solr is very flexible and provides a lot of pluggable API points, allowing you to throw-in your code.
There are people, falling under 'have to use Lucene' camp, but still prefer Solr to ...