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std::unique_lock or std::lock_guard?
...will be locked only once on construction and unlocked on destruction.
So for use case B you definitely need a std::unique_lock for the condition variable. In case A it depends whether you need to relock the guard.
std::unique_lock has other features that allow it to e.g.: be constructed without l...
Big O, how do you calculate/approximate it?
Most people with a degree in CS will certainly know what Big O stands for .
It helps us to measure how well an algorithm scales.
...
Converting a string to int in Groovy
..." as Integer
If you need to check whether the String can be converted before performing the conversion, use
String number = "66"
if (number.isInteger()) {
int value = number as Integer
}
Deprecation Update
In recent versions of Groovy one of the toInteger() methods has been deprecated. Th...
Disabling contextual LOB creation as createClob() method threw error
I am using Hibernate 3.5.6 with Oracle 10g. I am seeing the below exception during initialization but the application itself is working fine. What is the cause for this exception? and how it can be corrected?
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XML parsing of a variable string in JavaScript
I have a variable string that contains well-formed and valid XML. I need to use JavaScript code to parse this feed.
10 An...
Add Keypair to existing EC2 instance
...ply it to the instances so I can SSH in? Obtaining the exisiting pem file for the keypair the instances were created under is currently not an option.
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Is it possible to add an HTML link in the body of a MAILTO link [duplicate]
...on 2 of RFC 2368 says that the body field is supposed to be in text/plain format, so you can't do HTML.
However even if you use plain text it's possible that some modern mail clients would render a URL as a clickable link anyway, though.
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How to check if one of the following items is in a list?
I'm trying to find a short way to see if any of the following items is in a list, but my first attempt does not work. Besides writing a function to accomplish this, is the any short way to check if one of multiple items is in a list.
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Remove carriage return in Unix
...an just blindly within a file (you may have them in the middle of strings for all I know). Using this test file with a CR at the end of the first line only:
$ cat infile
hello
goodbye
$ cat infile | od -c
0000000 h e l l o \r \n g o o d b y e \n
0000017
dos2unix is the...
Java's Interface and Haskell's type class: differences and similarities?
...I noticed its type class , which is supposed to be a great invention that originated from Haskell.
10 Answers
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