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How do I tokenize a string in C++?
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C++ standard library algorithms are pretty universally based around iterators rather than concrete containers. Unfortunately this makes it hard to provide a Java-like split function in the C++ standard library, even though nobody a...
Career day in kindergarten: how to demonstrate programming in 20 minutes? [closed]
I was invited to the kindergarten group of my elder daughter to talk and answer the kids' questions about my profession. There are 26 kids of age 4-6 in the group, plus 3 teachers who are fairly scared of anything related to programming and IT themselves, but bold enough to learn new tricks. I would...
How to print a int64_t type in C
C99 standard has integer types with bytes size like int64_t. I am using the following code:
6 Answers
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Add primary key to existing table
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drop constraint and recreate it
alter table Persion drop CONSTRAINT <constraint_name>
alter table Persion add primary key (persionId,Pname,PMID)
edit:
you can find the constraint name by using the query below:
select OBJECT_NAME(...
How do I put an already-running process under nohup?
I have a process that is already running for a long time and don't want to end it.
11 Answers
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Convert a Git folder to a submodule retrospectively?
Quite often it is the case that you're writing a project of some kind, and after a while it becomes clear that some component of the project is actually useful as a standalone component (a library, perhaps). If you've had that idea from early on, then there's a fair chance that most of that code is ...
Get string character by index - Java
...letter); // Prints f
If you want more information on the Character class and the toString method, I pulled my info from the documentation on Character.toString.
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C++ template constructor
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As far as I understand, it's impossible to have it (because it would conflict with the default constructor - am I right?)
You are wrong. It doesn't conflict in any way. You just can't call it ever.
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How should one use std::optional?
I'm reading the documentation of std::experimental::optional and I have a good idea about what it does, but I don't understand when I should use it or how I should use it. The site doesn't contain any examples as of yet which leaves it harder for me to grasp the true concept of this object. When...
sed one-liner to convert all uppercase to lowercase?
....txt > output.txt for GNU sed works fine too
– Asfand Qazi
Apr 13 '17 at 8:49
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@ekkis OSX is ...