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What is a “callback” in C and how are they implemented?
...dlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include "../../common_typedef.h"
typedef void (*call_back) (S32, S32);
void test_call_back(S32 a, S32 b)
{
printf("In call back function, a:%d \t b:%d \n", a, b);
}
void call_callback_func(call_back back)...
How to upper case every first letter of word in a string? [duplicate]
I have a string: "hello good old world" and i want to upper case every first letter of every word, not the whole string with .toUpperCase(). Is there an existing java helper which does the job?
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Add spaces before Capital Letters
Given the string "ThisStringHasNoSpacesButItDoesHaveCapitals" what is the best way to add spaces before the capital letters. So the end string would be "This String Has No Spaces But It Does Have Capitals"
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How to safely upgrade an Amazon EC2 instance from t1.micro to large? [closed]
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IP address of new instance will be different. Am I right? So we need to change dns record ?
– gandil
May 5 '11 at 13:40
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Is it better in C++ to pass by value or pass by constant reference?
...or large objects that implement proper move constructors (such as vectors, strings …), the second case is then vastly more efficient than the first. Therefore, it is recommended to use pass by value if the function takes ownership of the argument, and if the object type supports efficient moving.
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Count occurrences of a char in a string using Bash
I need to count the number of occurrences of a char in a string using Bash.
7 Answers
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How would you count occurrences of a string (actually a char) within a string?
...mething where I realised I wanted to count how many / s I could find in a string, and then it struck me, that there were several ways to do it, but couldn't decide on what the best (or easiest) was.
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Remove all occurrences of char from string
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Try using the overload that takes CharSequence arguments (eg, String) rather than char:
str = str.replace("X", "");
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How to give System property to my test via Gradle and -D
... This doesn't work for me (tested using System.getProperties().stringPropertyNames().forEach(System.out::println); in the Java code, it doesn't appear)
– CLOVIS
Jul 9 '18 at 20:09
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Check substring exists in a string in C
I'm trying to check whether a string contains a substring in C like:
12 Answers
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