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Why use symbols as hash keys in Ruby?
...cause they are only stored once.
Symbols in Ruby are basically "immutable strings" .. that means that they can not be changed, and it implies that the same symbol when referenced many times throughout your source code, is always stored as the same entity, e.g. has the same object id.
Strings on t...
Convert string to a variable name
I am using R to parse a list of strings in the form:
10 Answers
10
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How would you make a comma-separated string from a list of strings?
What would be your preferred way to concatenate strings from a sequence such that between every two consecutive pairs a comma is added. That is, how do you map, for instance, ['a', 'b', 'c'] to 'a,b,c' ? (The cases ['s'] and [] should be mapped to 's' and '' , respectively.)
...
How to check String in response body with mockMvc
... andReturn() and use the returned MvcResult object to get the content as a String.
See below:
MvcResult result = mockMvc.perform(post("/api/users").header("Authorization", base64ForTestUser).contentType(MediaType.APPLICATION_JSON)
.content("{\"userName\":\"testUserDetails\",\"firstName...
Java String array: is there a size of method?
...
Yes, .length (property-like, not a method):
String[] array = new String[10];
int size = array.length;
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How do I convert from stringstream to string in C++?
How do I convert from std::stringstream to std::string in C++?
4 Answers
4
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Python 2.7 getting user input and manipulating as string without quotations
I want to get a string from a user, and then to manipulate it.
8 Answers
8
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Callback functions in Java
...itor{
int doJob(int a, int b);
}
public static void main(String[] args) {
Visitor adder = new Visitor(){
public int doJob(int a, int b) {
return a + b;
}
};
Visitor multiplier = new Visitor(){
public int d...
Difference between == and === in JavaScript [duplicate]
...lity the objects being
compared must have the same type and:
Two strings are strictly equal when they have the same sequence of
characters, same length, and same
characters in corresponding positions.
Two numbers are strictly equal when they are numerically equal (have
the same num...
Find string between two substrings [duplicate]
How do I find a string between two substrings ( '123STRINGabc' -> 'STRING' )?
20 Answers
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