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Exact difference between CharSequence and String in java [duplicate]
...h can be modified
Any method which accepts a CharSequence can operate on all of these equally well. Any method which only accepts a String will require conversion. So using CharSequence as an argument type in all the places where you don't care about the internals is prudent. However you should us...
Checking network connection
...t have a working internet connection, the DNS lookup itself may block the call to urllib_request.urlopen for more than a second. Thanks to @rzetterberg for pointing this out.
If the fixed IP address above is not working, you can find a current IP address for google.com (on unix) by running
% dig...
How to decode Unicode escape sequences like “\u00ed” to proper UTF-8 encoded characters?
...PHP that can decode Unicode escape sequences like " \u00ed " to " í " and all other similar occurrences?
7 Answers
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typeof !== “undefined” vs. != null
...gument, or as a global variable), I think the best way to do it is:
if (my_variable === undefined)
jQuery does it, so it's good enough for me :-)
Otherwise, you'll have to use typeof to avoid a ReferenceError.
If you expect undefined to be redefined, you could wrap your code like this:
(functi...
jquery disable form submit on enter
...
Usually form is submitted on Enter when you have focus on input elements.
We can disable Enter key (code 13) on input elements within a form:
$('form input').on('keypress', function(e) {
return e.which !== 13;
});
DEMO: ...
Error - trustAnchors parameter must be non-empty
...and what truststore is being used you can add the property javax.net.debug=all and then filter the logs about truststore. You can also play with the property javax.net.ssl.trustStore to specify a specific truststore. For example :
java -Djavax.net.debug=all -Djavax.net.ssl.trustStore=/Another/...
Change case of a file on Windows?
... of files in our git-controlled codebase that I'd like to rename. Specifically, I just want to change the case of the file, so that sourceCode.java becomes SourceCode.java , for example. The catch: I'm on a Windows box, and the filesystem thinks those are the same file name.
...
Is it acceptable and safe to run pip install under sudo?
...ns together will get me back on track :)
– markwalker_
Feb 22 '13 at 16:40
1
also, for installing...
MIN/MAX vs ORDER BY and LIMIT
... DBMSes have limit/offset or equivalent, and it is used in the majority of apps I have worked on (not as an alternative to MIN, but for other purposes such as pagination.)
– finnw
Jan 9 '09 at 1:36
...
SVN:externals equivalent in Git?
...ss to set up and then is very easy for other users, because it is automatically included when the repository is checked out or cloned. This can be a convenient way to include a dependency in your project.
It is easy to pull changes from the other project, but complicated to submit changes back. And ...