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push_back vs emplace_back
...ap :
std::map<int, Complicated> m;
int anInt = 4;
double aDouble = 5.0;
std::string aString = "C++";
// cross your finger so that the optimizer is really good
m.insert(std::make_pair(4, Complicated(anInt, aDouble, aString)));
// should be easier for the optimizer
m.emplace(4, anInt, aDoub...
Type hinting a collection of a specified type
...types contained within collections. As of November 2015, JetBrains PyCharm 5.0 fully supports Python 3.5 to include Type Hints as illustrated below.
Update 1
As of May 2015, PEP0484 (Type Hints) has been formally accepted. The draft implementation is also available at github under ambv/typehint...
MySQL maximum memory usage
...put any queries in it that are larger than 128MB. dev.mysql.com/doc/refman/5.0/en/query-cache-configuration.html
– agtb
Apr 17 '12 at 14:20
...
ASP.NET WebApi unit testing with Request.CreateResponse
... new HttpConfiguration());
If you are upgrading to webapi 5.0, then you'll need to change this to:
controller.Request = new HttpRequestMessage();
controller.Request.SetConfiguration(new HttpConfiguration());
The reason why you need to do this is because you have to have Request p...
How do I get the current time zone of MySQL?
...sions on application level or using CONVERT_TZ() (dev.mysql.com/doc/refman/5.0/en/…) At least, that's how I always understood how it's supposed to work, looking at the sparse options mySQL provides in this field.
– Pekka
May 29 '10 at 8:47
...
What is the purpose of the word 'self'?
...Vector.length_new = length_global
v = Vector(3, 4)
print(v.length_new()) # 5.0
This works because the first parameter of length_global, can be re-used as the self parameter in length_new. This would not be possible without an explicit self.
Another way of understanding the need for the explicit...
How are cookies passed in the HTTP protocol?
...ge/webp,*/*;q=0.8
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.112 Safari/537.36
Accept-Encoding: gzip, deflate, sdch
Accept-Language: en-US,en;q=0.8,ru;q=0.6
Cookie: name=F
...
Table Header Views in StoryBoards
...f you want to set the table header view. I noticed – maybe an Xcode bug (5.0) - that this would only work when I had moved the view out of the regular hierarchy first; I dragged it all the way to the bottom of the outline for that scene. Then, in a 2nd step, I could move it onto the table view.
...
Is it a good idea to index datetime field in mysql?
...ng elimination of rows between conditions: http://dev.mysql.com/doc/refman/5.0/en/mysql-indexes.html
This makes your datetime column an excellent candidate for an index if you are going to be using it in conditions frequently in queries. If your only condition is BETWEEN NOW() AND DATE_ADD(NOW(), ...
Why would one declare a Java interface method as abstract?
.../or abstract modifier for a method declared in an interface."
For Java SE 5.0: "For compatibility with older versions of the Java platform, it is permitted but discouraged, as a matter of style, to redundantly specify the abstract modifier for methods declared in interfaces."
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