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Difference between == and ===
...ook at example:
class Person : Equatable {
let ssn: Int
let name: String
init(ssn: Int, name: String) {
self.ssn = ssn
self.name = name
}
static func == (lhs: Person, rhs: Person) -> Bool {
return lhs.ssn == rhs.ssn
}
}
P.S.: Since ssn(social s...
Writing a dict to txt file and reading it back?
...just missing one step. When you read in the file, you are reading it as a string; but you want to turn the string back into a dictionary.
The error message you saw was because self.whip was a string, not a dictionary.
I first wrote that you could just feed the string into dict() but that doesn't ...
What is the use of static constructors?
...hem.
Example: Suppose we had this class:
class ScopeMonitor
{
static string urlFragment = "foo/bar";
static string firstPart= "http://www.example.com/";
static string fullUrl= firstPart + urlFragment;
}
When you access fullUr, it will be "http://www.example.com/foo/bar".
Months late...
Is there a way to instantiate objects from a string holding their class name?
... T> Base * createInstance() { return new T; }
typedef std::map<std::string, Base*(*)()> map_type;
map_type map;
map["DerivedA"] = &createInstance<DerivedA>;
map["DerivedB"] = &createInstance<DerivedB>;
And then you can do
return map[some_string]();
Getting a new ...
Ruby Arrays: select(), collect(), and map()
...] != "" }
That will give you all items where the :qty key isn't an empty string.
official select documentation
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Connecting to remote URL which requires authentication using Java
... new URL(“location address”);
URLConnection uc = url.openConnection();
String userpass = username + ":" + password;
String basicAuth = "Basic " + new String(Base64.getEncoder().encode(userpass.getBytes()));
uc.setRequestProperty ("Authorization", basicAuth);
InputStream in = uc.getInputStream();...
How to capitalize first letter of each word, like a 2-word city? [duplicate]
...Case()
.split(' ')
.map((s) => s.charAt(0).toUpperCase() + s.substring(1))
.join(' ');
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Android Json and null values
...eveloper.android.com/reference/org/json/JSONObject.html#isNull%28java.lang.String%29
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How to get month name from Calendar
...
You will get this way also.
String getMonthForInt(int num) {
String month = "wrong";
DateFormatSymbols dfs = new DateFormatSymbols();
String[] months = dfs.getMonths();
if (num >= 0 && num <= 11 ) {
...
Converting a date string to a DateTime object using Joda Time library
I have a date as a string in the following format "04/02/2011 20:27:05" . I am using Joda-Time library and would like to convert it to DateTime object. I did:
...