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JavaScript get element by name
...
The reason you're seeing that error is because document.getElementsByName returns a NodeList of elements. And a NodeList of elements does not have a .value property.
Use this instead:
document.getElementsByName("acc")[0].value
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Sort ArrayList of custom Objects by property
... }
});
Since java-8
You can now write the last example in a shorter form by using a lambda expression for the Comparator:
Collections.sort(Database.arrayList,
(o1, o2) -> o1.getStartDate().compareTo(o2.getStartDate()));
And List has a sort(Comparator) method, so you ca...
Map a network drive to be used by a service
... XP and Server 2008 x64 R2)
For this hack you will need SysinternalsSuite by Mark Russinovich:
Step one:
Open an elevated cmd.exe prompt (Run as administrator)
Step two:
Elevate again to root using PSExec.exe:
Navigate to the folder containing SysinternalsSuite and execute the following command
p...
How do servlets work? Instantiation, sessions, shared variables and multithreading
... ServletConfig. Those servlets are initialized in the same order specified by that value (1 is 1st, 2 is 2nd, etc). If the same value is specified for more than one servlet, then each of those servlets is loaded in the same order as they appear in the web.xml, web-fragment.xml, or @WebServlet classl...
How to determine the version of the C++ standard used by the compiler?
How do you determine what version of the C++ standard is implemented by your compiler? As far as I know, below are the standards I've known:
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What are all the valid self-closing elements in XHTML (as implemented by the major browsers)?
...t are all the valid self-closing elements (e.g. ) in XHTML (as implemented by the major browsers)?
13 Answers
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Gcc error: gcc: error trying to exec 'cc1': execvp: No such file or directory
...d other internal commands for different languages.
taken from this answer by Alan Shutko.
Solution for: Ubuntu / Linux Mint
sudo apt-get update
sudo apt-get install --reinstall build-essential
Solution for: Docker-alpine environment
If you are in docker-alpine environment install the build-base pa...
How can I increment a date by one day in Java?
...ys using DATE, DAY_OF_MONTH or even DAY_OF_YEAR - they all are incremented by modulus. So considering Calendar of 31-12-1970, add(DAY_OF_YEAR, 1) or roll(), however roll() finally calls add(), will give 01-01-1970. I guess the only correct way is to set time with milliseconds. As for me, I'm nev...
How to get the current date/time in Java [duplicate]
..., most people who know about these things recommended Joda-time as having (by far) the best Java APIs for doing things involving time point and duration calculations.
With Java 8 and later, the standard java.time package is recommended. Joda time is now considered "obsolete", and the Joda mainta...
What is so bad about singletons? [closed]
...member of the GoF 's patterns book , but it lately seems rather orphaned by the developer world. I still use quite a lot of singletons, especially for factory classes , and while you have to be a bit careful about multithreading issues (like any class actually), I fail to see why they are so awfu...