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Why is this program erroneously rejected by three C++ compilers?
I am having some difficulty compiling a C++ program that I've written.
31 Answers
31
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How to format numbers by prepending 0 to single-digit numbers?
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The best method I've found is something like the following:
(Note that this simple version only works for positive integers)
var myNumber = 7;
var formattedNumber = ("0" + myNumber).slice(-2);
console.log(formattedNumber);
For decimals, you could...
String Concatenation using '+' operator
Looking at the string class metadata, I only see the operators == and != overloaded. So how is it able to perform concatenation for the ' + ' operator?
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How can I list (ls) the 5 last modified files in a directory?
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Try using head or tail. If you want the 5 most-recently modified files:
ls -1t | head -5
The -1 (that's a one) says one file per line and the head says take the first 5 entries.
If you want the last 5 try
ls -1t | tail -5
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Why not inherit from List?
When planning out my programs, I often start with a chain of thought like so:
27 Answers
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psql: FATAL: Peer authentication failed for user “dev”
when i create a new user, but it cannot login the database.
I do that like this:
12 Answers
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Android, getting resource ID from string?
I need to pass a resource ID to a method in one of my classes. It needs to use both the id that the reference points to and also it needs the string. How should I best achieve this?
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How to call Base Class's __init__ method from the child class? [duplicate]
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You could use super(ChildClass, self).__init__()
class BaseClass(object):
def __init__(self, *args, **kwargs):
pass
class ChildClass(BaseClass):
def __init__(self, *args, **kwargs):
super(ChildClass, self).__init__(*args, **kwargs)
Your ...
Why is this program valid? I was trying to create a syntax error
I'm running ActiveState's 32 bit ActivePerl 5.14.2 on Windows 7. I wanted to mess around with a Git pre-commit hook to detect programs being checked in with syntax errors. (Somehow I just managed to do such a bad commit.) So as a test program I randomly jotted this:
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List of all index & index columns in SQL Server DB
How do I get a list of all index & index columns in SQL Server 2005+? The closest I could get is:
30 Answers
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