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What is the best way to use a HashMap in C++?
...lude <cassert>
int main(int argc, char **argv)
{
std::map<std::string, int> m;
m["hello"] = 23;
// check if key is present
if (m.find("world") != m.end())
std::cout << "map contains key world!\n";
// retrieve
std::cout << m["hello"] << '\n';
std::map&...
&& (AND) and || (OR) in IF statements
...uated. And this is very useful. For example, if you need to test whether a String is not null or empty, you can write:
if (str != null && !str.isEmpty()) {
doSomethingWith(str.charAt(0));
}
or, the other way around
if (str == null || str.isEmpty()) {
complainAboutUnusableString();
} ...
Android Replace “…” with ellipsis character
...
@TusharPandey- if your code is <string name="searching">Searching...</string> then it will look something like <string name="searching">Searching&#x2026</string>
– Jadeye
Apr 18 '15 at 20:33
...
How to avoid “Permission denied” when using pip with virtualenv
...env permission problems might occur when you create the virtualenv as sudo and then operate without sudo in the virtualenv.
As found out in your question's comment, the solution here is to create the virtualenv without sudo to be able to work (esp. write) in it without sudo.
...
How can I get “Copy to Output Directory” to work with Unit Tests?
... folder and then the tests are executed. The issue I'm having is that not all the files in the Debug/bin directory are copied to the TestResults project.
...
Pair/tuple data type in Go
...ng the final exercise of the Tour of Go , I decided I needed a queue of ( string , int ) pairs. That's easy enough:
3 Ans...
How to get a reversed list view on a list in Java?
...
Guava provides this: Lists.reverse(List)
List<String> letters = ImmutableList.of("a", "b", "c");
List<String> reverseView = Lists.reverse(letters);
System.out.println(reverseView); // [c, b, a]
Unlike Collections.reverse, this is purely a view... it doesn't a...
Is it valid to define functions in JSON results?
... "basic types" supported are:
Number (integer, real, or floating
point)
String (double-quoted Unicode
with backslash escaping)
Boolean
(true and false)
Array (an ordered
sequence of values, comma-separated
and enclosed in square brackets)
Object (collection of key:value
pairs, comma-separated and...
Moment js date time comparison
...os_Angeles.
If you want to parse a value as UTC, then use:
moment.utc(theStringToParse)
Or, if you want to parse a local value and convert it to UTC, then use:
moment(theStringToParse).utc()
Or perhaps you don't need it at all. Just because the input value is in UTC, doesn't mean you have to ...
The difference between Classes, Objects, and Instances
...ject's code. An object is an instance of a class
for example if you say
String word = new String();
the class is the String class, which describes the object (instance) word.
When a class is declared, no memory is allocated so class is just a template.
When the object of the class is declared...