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Regarding 'main(int argc, char *argv[])' [duplicate]
...] = 1
argv[ 5 ] = 4
argv[ 6 ] = 5
[The char strings "2", "8" etc. can be converted to number using some character to number conversion function, e.g. atol() (link)]
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Initializing a static std::map in C++
...the following way (since C++17):
// Example
template<>
class StringConverter<CacheMode> final
{
public:
static auto convert(CacheMode mode) -> const std::string&
{
// validate...
return s_modes.at(mode);
}
private:
static inline const std::map<...
EF Code First: How do I see 'EntityValidationErrors' property from the nuget package console?
...
I converted Richards answer to an extension method :
public static int SaveChangesWithErrors(this DbContext context)
{
try
{
return context.SaveChanges();
}
catch (DbEntityVali...
Array.Copy vs Buffer.BlockCopy
...hen you're provided with an array of primitives (say, shorts), and need to convert it to an array of bytes (say, for transmission over a network). I use this method frequently when dealing with audio from the Silverlight AudioSink. It provides the sample as a short[] array, but you need to convert...
How do I specify the exit code of a console application in .NET?
... You say that 0 is the standard value for success, and yet when converting 0/1 to boolean, 0 is false and 1 is true! It may be more accurate to say that an exit code of 0 means "no error", rather than "success", as the exit code is an ErrorResult not simply a Result.
...
How to create PDFs in an Android app? [closed]
... can then open this dummy activity, take a screenshot programmatically and convert that image to pdf using this library. Of course there are limitations such as not being able to scroll, not more than one page,but for a limited application this is quick and easy. Hope this helps someone!
...
How to use R's ellipsis feature when writing your own function?
...
You can convert the ellipsis into a list with list(), and then perform your operations on it:
> test.func <- function(...) { lapply(list(...), class) }
> test.func(a="b", b=1)
$a
[1] "character"
$b
[1] "numeric"
So your ...
Sending HTTP POST Request In Java
...ing a POST request is easy in vanilla Java. Starting with a URL, we need t convert it to a URLConnection using url.openConnection();. After that, we need to cast it to a HttpURLConnection, so we can access its setRequestMethod() method to set our method. We finally say that we are going to send data...
How to iterate a loop with index and element in Swift
...arrays.
In this array I wanted to filter odd or even indexed elements and convert them from Ints to Doubles. So enumerate() gets you index and the element, then filter checks the index, and finally to get rid of the resulting tuple I map it to just the element.
let evens = arrayOfValues.enumerate(...
Does Java casting introduce overhead? Why?
...ception.
Taken from JavaWorld: The cost of casting
Casting is used to convert between
types -- between reference types in
particular, for the type of casting
operation in which we're interested
here.
Upcast operations (also called
widening conversions in the Java
Language Spec...