Try deleting index.lock file in your .git directory. rm -f .git/index.lock Such problems generally occur when you execute two git commands simultaneously; maybe one from the command prompt and one from an IDE.
Well, data.str().c_str() yields a char const* but your function Printfunc() wants to have char*s. Based on the name, it doesn’t change the arguments but merely prints them and/or uses them to name a file, in which case you should probably fix your declaration to be The alternative might be to turn the char const* into a char* but fixing the declaration is preferable:
You are trying to decode an object that is already decoded. You have a str, there is no need to decode from UTF-8 anymore. Simply drop the .decode(‘utf-8’) part: As for your fetch() call, you are explicitly asking for just the first message. Use a range if you want to retrieve more messages. See the documentation: The message_set options to commands below is a … Read more
Use ? at the end for characters: [A-Za-z]? This will match at most 1 presence of a character (lower or upper case).
Moving to an existing branch If you want to move your commits to an existing branch, it will look like this: You can store uncommitted edits to your stash before doing this, using git stash. Once complete, you can retrieve the stashed uncommitted edits with git stash pop Moving to a new branch WARNING: This method works because you … Read more
list.toString() is good enough. The interface List does not define a contract for toString(), but the AbstractCollection base class provides a useful implementation that ArrayList inherits.
In C language, objects with static storage duration have to be initialized with constant expressions, or with aggregate initializers containing constant expressions. A “large” object is never a constant expression in C, even if the object is declared as const. Moreover, in C language, the term “constant” refers to literal constants (like 1, ‘a’, 0xFF and so on), enum members, and results of … Read more
The double arrow operator, =>, is used as an access mechanism for arrays. This means that what is on the left side of it will have a corresponding value of what is on the right side of it in array context. This can be used to set values of any acceptable type into a corresponding index of … Read more
The address-operator & requires a variable to take the address from. The result of your cast (long)u32_Time is a temporary that does not necessarily reside in memory and therefore has no address that could be taken. So if that piece of code ever compiled somewhere it was a nonstandard compiler extension. The standard, §5.3.1,3 demands: The result of the … Read more
A functor is pretty much just a class which defines the operator(). That lets you create objects which “look like” a function: There are a couple of nice things about functors. One is that unlike regular functions, they can contain state. The above example creates a function which adds 42 to whatever you give it. … Read more