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What is an undefined reference/unresolved external symbol error and how do I fix it?
...o longer significant. Each preprocessing token is converted into a token. (2.7). The
resulting tokens are syntactically and semantically analyzed and
translated as a translation unit. [SNIP]
Translated translation units and instantiation units are combined as follows: [SNIP]
All external entity refe...
What is the best way to solve an Objective-C namespace collision?
...times the initials refer to the project, e.g. Adium prefixes classes with "AI" (as there is no company behind it of that you could take the initials). Apple prefixes classes with NS and says this prefix is reserved for Apple only.
...
How to configure MongoDB Java driver MongoOptions for production use?
...rite backlog so we have this on false (the default) in production.
j *(NEW 2.7+)*. Boolean that when set to true forces MongoDB to wait for a successful journaling group commit before returning. If you have journaling enabled you can enable this for additional durability. Refer to http://www.mongodb...
Why aren't python nested functions called closures?
...ions written like this the ability to have "internal memory". As of Python 2.7 this is not possible. If you try
def initCounter():
x = 0;
def counter ():
x += 1 ##Error, x not defined
print x
return counter
count = initCounter();
count(); ##Error
count();
count();
Yo...
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What is the difference between Google App Engine and Google Compute Engine?
...behind a Google Cloud Load Balancer. Limited to
supported runtimes: Python 2.7, Java 7 and 8, Go 1.6-1.9, and PHP
5.5. In Java, there is some support for Servlets but not the full J2EE standard.
App Engine Flex
Pros
Can use a custom runtime
Native integration with GCE networking
Version and tra...
File input 'accept' attribute - is it useful?
Implementing a file upload under html is fairly simple, but I just noticed that there is an 'accept' attribute that can be added to the <input type="file" ...> tag.
...
Why does Ruby have both private and protected methods?
...ave to) call it with self to separate it from local variables."
Since Ruby 2.7 the self receiver can be explicit, self.some_private_method is allowed. (Any other explicit receiver is still disallowed, even if the runtime value is the same as self.)
In Ruby, these distinctions are just advice from...
What is the formal difference in Scala between braces and parentheses, and when should they be used?
...ith a different error message (unexpected comma). You'd have to go back to 2.7 or 2.8 to get the original error, probably.
– Daniel C. Sobral
Aug 2 '19 at 8:30
...
Difference between DateTime and Time in Ruby
...ied Time.new(2012,6,30,23,59,60,0) in different Ruby versions, from 2.0 to 2.7, and always got 2012-07-01 00:00:00 +0000.
– michau
Jul 22 '19 at 15:34
...