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In postgreSQL what char replaces one other char?


In postgreSQL what char replaces one other char?

By : Mika Well
Date : December 01 2020, 05:00 PM
it helps some times for example 'a%' means all records that starts with a, no matter the length. , Use the underscore character to match any single character:
code :
SELECT * FROM your_table WHERE column LIKE 'a_'
SELECT * FROM your_table WHERE column LIKE 'a%' AND CHAR_LENGTH(column) = 2


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Function overloading for char, signed char or unsigned char parameter type in terms of compiling template

Function overloading for char, signed char or unsigned char parameter type in terms of compiling template


By : Syed Anuar
Date : March 29 2020, 07:55 AM
wish helps you If you want a type trait like that, you will have to make one yourself:
code :
template <typename T>
struct is_char
{
    static const bool value = std::is_same<T, char>::value ||
            std::is_same<T, signed char>::value ||
            std::is_same<T, unsigned char>::value;
};

template <typename T>
void f(T t, typename std::enable_if<is_char<T>::value>::type* = 0)
{
} 
C++ Error: no match to call <class constructor (char*&, char*&, char*&, char*&)

C++ Error: no match to call <class constructor (char*&, char*&, char*&, char*&)


By : Pbr18
Date : March 29 2020, 07:55 AM
With these it helps What I'm trying to do with this program is I have a MySQL result table, and I am iterating through the rows. Each row has 5 columns and I want to store each field into the private data members of a class. Then once I have that class, I want to push_back the class into a vector of the class type. So in my main.cpp I have: , This is wrong:
code :
Wine w,
// ...
w(row[0], row[1], row[2], row[3], row[4]);
w = Wine(row[0], row[1], row[2], row[3], row[4]);
Why do I get this error message: "undefined reference to `PerformChat(char*, char*, char*, char*, char*)'"

Why do I get this error message: "undefined reference to `PerformChat(char*, char*, char*, char*, char*)'"


By : Den Volokhovskyi
Date : March 29 2020, 07:55 AM
wish of those help I am trying to compile my program that uses ChatScript libraries. This is my code inside a file named main.cpp : , I could compile my program with this command:
code :
g++ -std=c++11 main.cpp constructCode.cpp duktape/duktape.cpp evserver.cpp csocket.cpp cs_ev.c dictionarySystem.cpp englishTagger.cpp factSystem.cpp json.cpp functionExecute.cpp english.cpp infer.cpp javascript.cpp jsmn.cpp markSystem.cpp mysql.cpp mongodb.cpp os.cpp outputSystem.cpp patternSystem.cpp postgres.cpp privatesrc.cpp scriptCompile.cpp spellcheck.cpp secure.cpp systemVariables.cpp tagger.cpp testing.cpp textUtilities.cpp tokenSystem.cpp topicSystem.cpp userCache.cpp userSystem.cpp variableSystem.cpp mainSystem.cpp -o myapp -L/usr/lib64 -lrt -lcurl -pthread -Ievserver -DDISCARDSERVER=1 -DDISCARDPOSTGRES=1 -DDISCARDMONGO=1 -DDISCARDMYSQL=1 -DEVSERVER=1 -DEVSERVER_FORK=1
What is this error? cannot convert 'char**' to 'char*' for argument '1' to 'char* strcpy(char*, const char*)

What is this error? cannot convert 'char**' to 'char*' for argument '1' to 'char* strcpy(char*, const char*)


By : user5863282
Date : March 29 2020, 07:55 AM
I wish this helpful for you
code :
char * name[NAME_LEN];
 ^   ^  ^   ^
 |   |  |   |
 |   |  |  is an array of NAME_LEN
 |   | name
 |  pointers to
char
char name[NAME_LEN];
 ^    ^   ^
 |    |   |
 |    |  is an array of NAME_LEN
 |   name
char
Cannot invoke copyOf(char[], int) on the array type char[] in the function "public ArrayList<char[]> sort(Arr

Cannot invoke copyOf(char[], int) on the array type char[] in the function "public ArrayList<char[]> sort(Arr


By : mbonkowski
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further The object char[] does not have a .copyOf method. You can replace that with Arrays.copyOf(array, size)
code :
int size = ((chars.get(i + 1).length - chars.get(i).length) + chars.get(i).length);
char[] c = Arrays.copyOf(chars.get(i), size);
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