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Why am I getting a “401 Unauthorized” error in Maven?
...on already exists in the repository. So you might find that by publishing from the command line it works, but then when you do it from a script it fails (because it didn't exist in the repository the first time around). Either publish using a different version number, or delete the old artefact on...
How to capture no file for fs.readFileSync()?
...y, fs.readFileSync throws an error when a file is not found. This error is from the Error prototype and thrown using throw, hence the only way to catch is with a try / catch block:
var fileContents;
try {
fileContents = fs.readFileSync('foo.bar');
} catch (err) {
// Here you get the error when ...
Why is “using namespace std;” considered bad practice?
...foo;
using namespace bar;
Everything works fine, and you can call Blah() from Foo and Quux() from Bar without problems. But one day you upgrade to a new version of Foo 2.0, which now offers a function called Quux(). Now you've got a conflict: Both Foo 2.0 and Bar import Quux() into your global nam...
How do you exit from a void function in C++?
How can you prematurely exit from a function without returning a value if it is a void function? I have a void method that needs to not execute its code if a certain condition is true. I really don't want to have to change the method to actually return a value.
...
What is the difference between indexOf() and search()?
...rgument
str.indexOf('k') // 3
str.indexOf('k',4) // 11 (it start search from 4th position)
special in search()
search value can be regular expression
str.search('book') // 8
str.search(/book/i) // 0 ( /i =case-insensitive (Book == book)
reference
...
What do the python file extensions, .pyc .pyd .pyo stand for?
...ult in malfunctioning programs. Currently only __doc__ strings are removed from the bytecode, resulting in more compact ‘.pyo’ files. Since some programs may rely on having these available, you should only use this option if you know what you're doing.
A program doesn't run any faster when it ...
Does Spring @Transactional attribute work on a private method?
...the proxy. -- This is normally the case if the annotated method is invoked from another bean.
This has two implications:
Because private methods must not be invoked from another bean (the exception is reflection), their @Transactional Annotation is not taken into account.
If the method is public, b...
ERROR 1396 (HY000): Operation CREATE USER failed for 'jack'@'localhost'
... a bug. It is a documentation conspiracy - docs vary in one critical place from version to version.
13.7.1.2. DROP USER Syntax
...
DROP USER user [, user] ...
...
DROP USER 'jeffrey'@'localhost';
If you specify only the user name part of the account name, a host name part of '%' is use...
Proper MIME media type for PDF files
...ignment is defined in RFC 3778, The application/pdf Media Type, referenced from the MIME Media Types registry.
MIME types are controlled by a standards body, The Internet Assigned Numbers Authority (IANA). This is the same organization that manages the root name servers and the IP address space.
T...
Are negative array indexes allowed in C?
...
That is correct. From C99 §6.5.2.1/2:
The definition of the subscript
operator [] is that E1[E2] is
identical to (*((E1)+(E2))).
There's no magic. It's a 1-1 equivalence. As always when dereferencing a pointer (*), you need to b...