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std::string to char*
I want to convert a std::string into a char* or char[] data type.
18 Answers
18
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In STL maps, is it better to use map::insert than []?
...y create:
using std::cout; using std::endl;
typedef std::map<int, std::string> MyMap;
MyMap map;
// ...
std::pair<MyMap::iterator, bool> res = map.insert(MyMap::value_type(key,value));
if ( ! res.second ) {
cout << "key " << key << " already exists "
<...
How to convert/parse from String to char in java?
How do I parse a String value to a char type, in Java?
14 Answers
14
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How can I use map and receive an index as well in Scala?
...ted
scala> ci map (i => i+"=#"+ci.count) toList
res0: List[java.lang.String] = List(These=#0,are=#1,words=#2)
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How to create a GUID/UUID in Python
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Well, as you can see above, str(uuid4()) returns a string representation of the UUID with the dashes included, while uuid4().hex returns "The UUID as a 32-character hexadecimal string"
– stuartd
Jan 30 '18 at 10:08
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Case-insensitive string comparison in C++ [closed]
What is the best way of doing case-insensitive string comparison in C++ without transforming a string to all uppercase or all lowercase?
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Common MySQL fields and their appropriate data types
... |
| salt | CHAR(x) | randomly generated string, usually of
fixed length (x)
| digest (md5) | CHAR(32) | |
| phone number | VAR...
Meaning of acronym SSO in the context of std::string
...ral answers referred to "SSO" in the context of optimizing copies of std::string . What does SSO mean in that context?
3 A...
MySQL - length() vs char_length()
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LENGTH() returns the length of the string measured in bytes.
CHAR_LENGTH() returns the length of the string measured in characters.
This is especially relevant for Unicode, in which most characters are encoded in two bytes. Or UTF-8, where the number of by...
const char* concatenation
...ointed to by these pointers. So anything like:
strcat(one,two); // append string two to string one.
will not work. Instead you should have a separate variable(char array) to hold the result. Something like this:
char result[100]; // array to hold the result.
strcpy(result,one); // copy string...