...ct is hardly unique (not a good "natural key"). Also, enforcing uniqueness and referencing the column in foreign keys is typically cheaper with a 4-byte integer (or even an 8-byte bigint) than with a string stored as text or varchar. Don't use names of basic data types like date as identifiers. Whi...

.../program F=filename") File not supplied. Usage: ./program F=filename> and > cat("File not supplied.\nUsage: ./program F=filename","\n") File not supplied. Usage: ./program F=filename > The reason print() doesn't do what you want is that print() shows you a version of the object from th...

This is more of a general question about the difference between text/xml and application/xml . I am fairly new to writing webservices (REST - Jersey). I have been producing application/xml since it is what shows up in most tutorials / code examples that I have been using to learn, but I recentl...

I have been using with success, grand central dispatch in my apps, but I was wondering what is the real advantage of using something like this: ...

... exists in memory, that doesn't yet contain any domain data ("real" data), and then populating it with domain data (such as from a database, from the network, or from a file system). From Erick Robertson's comments on this answer: deserialization == instantiation + hydration If you don't need...

My site uses http and https protocol; it doesn't affect the content. My site uses jQuery ajax calls, which fills some areas on the page, too. ...

... As others have already said, parameters passed through the command line can be accessed in batch files with the notation %1 to %9. There are also two other tokens that you can use: %0 is the executable (batch file) name as specified in the command line. %* is all parameters specified i...

...erating over a map with a range loop, the iteration order is not specified and is not guaranteed to be the same from one iteration to the next. Since Go 1 the runtime randomizes map iteration order, as programmers relied on the stable iteration order of the previous implementation. If you require a ...

What is the purpose of @RenderSection and how does it function? I understand what bundles do, but I have yet to figure out what this does and it's probably important. ...

...he axes title plt.rc('axes', labelsize=MEDIUM_SIZE) # fontsize of the x and y labels plt.rc('xtick', labelsize=SMALL_SIZE) # fontsize of the tick labels plt.rc('ytick', labelsize=SMALL_SIZE) # fontsize of the tick labels plt.rc('legend', fontsize=SMALL_SIZE) # legend fontsize plt.rc('fig...