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structure vs class in swift language
...assed to a function
Value Type:
Struct, Enum, Tuple
struct String, struct Array(Set, Dictionary)
When you assign or pass value type a new copy of data is created. Actually the copy on write - COW mechanism is used with some optimisations, for example the copy is created when object is modified
Whe...
HTTP URL Address Encoding in Java
...uilder resultStr = new StringBuilder();
for (char ch : input.toCharArray()) {
if (isUnsafe(ch)) {
resultStr.append('%');
resultStr.append(toHex(ch / 16));
resultStr.append(toHex(ch % 16));
} else {
result...
What are attributes in .NET?
... control and fill out an entry in the list:
// done for each control type
array <Object ^>
// get all the custom attributes
^attributes = controltype->GetCustomAttributes (true);
Type
// this is the one we're interested in
^attributetype = ECMMainPageDisplay::ControlDescriptionAtt...
“Inner exception” (with traceback) in Python?
...exception
mechanism that implicitly retains chained exceptions in an array
named @@.
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Get underlying NSData from UIImage
...nal data (which is probably in PNG or JPEG format) but more likely a pixel array or some other internal format. In other words, UIImage(data: foo) will not retain foo.
If you just want to use it elsewhere in your program, the original UIImage will do fine (I presume that's not actually the case he...
Call by name vs call by value in Scala, clarification needed
...Examine the following implementations:
object main {
def main(args: Array[String]) {
def onTime(time: Long) {
while(time != time) println("Time to Nag!")
println("no nags for you!")
}
def onRealtime(time: => Long) {
while(time !...
Matplotlib - global legend and title aside subplots
...ls = []
for i in range(modSize):
legendLabels.append(ax.plot(x,hstack((array([0]),actSum[j,semi,i,semi])), color=plotColor[i%8], dashes=dashes[i%4])[0]) #linestyle=dashs[i%4]
legArgs = dict(title='AM Templates (Hz)',bbox_to_anchor=[.4,1.05],borderpad=0.1,labelspacing=0,handlelength=1.8,ha...
How do I create a Java string from the contents of a file?
...e size of the file, because for a short time the raw file contents (a byte array), and the decoded characters (each of which is 16 bits even if encoded as 8 bits in the file) reside in memory at once. It is safest to apply to files that you know to be small relative to the available memory.
The seco...
List vs tuple, when to use each? [duplicate]
... C, and lists being for homogeneous collections, similar to what you'd use arrays for. But I've never quite squared this with the mutability issue mentioned in the other answers. Mutability has teeth to it (you actually can't change a tuple), while homogeneity is not enforced, and so seems to be a...
How do you implement a class in C? [closed]
...
If you only want one class, use an array of structs as the "objects" data and pass pointers to them to the "member" functions. You can use typedef struct _whatever Whatever before declaring struct _whatever to hide the implementation from client code. There's ...