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How to debug an apache virtual host configuration?
...ck configuration files for syntax errors:
# Red Hat-based (Fedora, CentOS) and OSX
httpd -t
# Debian-based (Ubuntu)
apache2ctl -t
# MacOS
apachectl -t
List virtual hosts
To list all virtual hosts, and their locations:
# Red Hat-based (Fedora, CentOS) and OSX
httpd -S
# Debian-based (Ubuntu)
apac...
AngularJS : Where to use promises?
...to be a complete answer to your question, but hopefully this will help you and others when you try to read the documentation on the $q service. It took me a while to understand it.
Let's set aside AngularJS for a moment and just consider the Facebook API calls. Both the API calls use a callback m...
Base64 Java encode and decode a string [duplicate]
I want to encode a string into base64 and transfer it through a socket and decode it back.
6 Answers
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Why does the is operator return false when given null?
...e) type
One would be implicitly assuming that a type is a set of values, and that assignment compatibility of a value y with a variable of type X is nothing more nor less than checking whether y is a member of set x.
Though that is an extremely common way of looking at types, that is not the onl...
base64 encoded images in email signatures
...d by the email system in question (they get sent as attachments generally) and as linked images (requiring permission to display them in the email received).
...
How do I concatenate multiple C++ strings on one line?
...ilverMöls The OP declares s on a different line in the equivalent C# code and in his non-compiling C++ code. His desired C++ is s += "Hello world, " + "nice to see you, " + "or not."; which can be written s.append("Hello world, ").append("nice to see you, ").append("or not.");
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How to convert list of key-value tuples into dictionary?
...
This gives me the same error as trying to split the list up and zip it. ValueError: dictionary update sequence element #0 has length 1916; 2 is required
THAT is your actual question.
The answer is that the elements of your list are not what you think they are. If you type myList[0]...
difference between foldLeft and reduceLeft in Scala
I have learned the basic difference between foldLeft and reduceLeft
7 Answers
7
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What is the difference between _tmain() and main() in C++?
...n does.
_tmain is a Microsoft extension.
main is, according to the C++ standard, the program's entry point.
It has one of these two signatures:
int main();
int main(int argc, char* argv[]);
Microsoft has added a wmain which replaces the second signature with this:
int wmain(int argc, wchar_t* ...
Java List.add() UnsupportedOperationException
...t about this by reading the documentation of UnsupportedOperationException and List.add(), which documents this to be an "(optional operation)". The precise meaning of this phrase is explained at the top of the List documentation.
As a workaround you can create a copy of the list to a known-modifia...