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What is the best way to use a HashMap in C++?
...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<std::string, int>::iterator i...
Make $JAVA_HOME easily changable in Ubuntu [closed]
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edited Mar 3 '18 at 0:19
answered May 13 '11 at 15:15
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CSS: Change image src on img:hover
... Adriano
2,57644 gold badges2222 silver badges3434 bronze badges
answered Aug 3 '13 at 11:27
Ashis KumarAshis Kumar
6,04622 ...
What is difference between functional and imperative programming languages?
... numbers:
int total = 0;
int number1 = 5;
int number2 = 10;
int number3 = 15;
total = number1 + number2 + number3;
Each statement changes the state of the program, from assigning values to each variable to the final addition of those values. Using a sequence of five statements the program i...
How do I install g++ for Fedora?
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SchwernSchwern
116k2020 gold badges139139 silver badges275275 bronze badges
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Checking a Python module version at runtime
...ent or not). For the python stuff I write that has external dependencies (3rd party libraries), I write a script that users can run to check their python install to see if the appropriate versions of modules are installed.
For the modules that don't have a defined 'version' attribute, you can in...
RichTextBox (WPF) does not have string property “Text”
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answered Sep 29 '12 at 8:32
sma6871sma6871
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Rails Root directory path?
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In Rails 3 and newer:
Rails.root
which returns a Pathname object. If you want a string you have to add .to_s. If you want another path in your Rails app, you can use join like this:
Rails.root.join('app', 'assets', 'images', 'logo...
Convert String array to ArrayList [duplicate]
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Marcel Bro
4,15633 gold badges3434 silver badges6161 bronze badges
answered May 10 '12 at 8:41
Lalit BhudiyaLalit Bhu...
How to upgrade rubygems
... by aptitude or apt-get.
– Anuj
Nov 30 '12 at 9:18
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