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Convert a String In C++ To Upper Case
...ing glibc's toupper in a loop.) There's a dynamic_cast of the locale that doesn't get hoisted out of the per-char loop. See my answer. On the plus side, this may be properly UTF-8 aware, but the slowdown doesn't come from handling UTF-8; it comes from using a dynamic_cast to re-check the locale e...
What do the crossed style properties in Google Chrome devtools mean?
...SS properties. At times, some of these properties are struck-through. What do these properties mean?
5 Answers
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What is the “right” JSON date format?
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JSON itself does not specify how dates should be represented, but JavaScript does.
You should use the format emitted by Date's toJSON method:
2012-04-23T18:25:43.511Z
Here's why:
It's human readable but also succinct
It sorts correc...
What do two question marks together mean in C#?
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@Gusdor ?? is left associative, so a ?? b ?? c ?? d is equivalent to ((a ?? b) ?? c ) ?? d. "The assignment operators and the ternary operator (?:) are right associative. All other binary operators are left associative." Source: ...
Exporting functions from a DLL with dllexport
I'd like a simple example of exporting a function from a C++ Windows DLL.
4 Answers
4
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What are the use cases of Graph-based Databases (http://neo4j.org/)? [closed]
...that the data being stored by the system and the operations the system was doing with the data were exactly the weak spot of relational databases and were exactly the strong spot of graph databases. The system needed to store collections of objects that lack a fixed schema and are linked together by...
What is the difference between Google App Engine and Google Compute Engine?
...-as-a-Service. It means that you simply deploy your code, and the platform does everything else for you. For example, if your app becomes very successful, App Engine will automatically create more instances to handle the increased volume.
Read more about App Engine
Compute Engine is an Infrastruct...
Is there a reason that we cannot iterate on “reverse Range” in ruby?
...efined by its start and end, not by its contents. "Iterating" over a range doesn't really make sense in a general case. Consider, for example, how you would "iterate" over the range produced by two dates. Would you iterate by day? by month? by year? by week? It's not well-defined. IMO, the fact that...
Is it good practice to NULL a pointer after deleting it?
...ndard C++, the NULL define from C is somewhat different) avoids crashes on double deletes.
Consider the following:
Foo* foo = 0; // Sets the pointer to 0 (C++ NULL)
delete foo; // Won't do anything
Whereas:
Foo* foo = new Foo();
delete foo; // Deletes the object
delete foo; // Undefined behavio...
How do I delete an exported environment variable?
...This should work per terminal instance. Generally, each time a terminal window is opened, it will load up variables from various places such as ~/.bashrc, ~/.profile, etc. Any variables you set in one terminal instance will not carry over to another. If you have a variable which seems to be set auto...