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What is the difference between “text” and new String(“text”)?
...would ever want to use the new String(anotherString) constructor. From the API:
String(String original) : Initializes a newly created String object so that it represents the same sequence of characters as the argument; in other words, the newly created string is a copy of the argument string. Un...
Removing all empty elements from a hash / YAML?
How would I go about removing all empty elements (empty list items) from a nested Hash or YAML file?
20 Answers
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Is it bad practice to have a constructor function return a Promise?
...create and initialize a new instance. It should set up data structures and all instance-specific properties, but not execute any tasks. It should be a pure function without side effects if possible, with all the benefits that has.
What if I want to execute things from my constructor?
That shou...
String's Maximum length in Java - calling length() method
... int.
public int length()
Refer http://docs.oracle.com/javase/7/docs/api/java/lang/String.html#length()
So the maximum value of int is 2147483647.
String is considered as char array internally,So indexing is done within the maximum range.
This means we cannot index the 2147483648th member.So...
Rails formatting date
I am posting a date to an API and the required format is as follows:
4 Answers
4
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log4j vs logback [closed]
...ments the SLF4J API. This means that if you are using logback, you are actually using the SLF4J API. You could theoretically use the internals of the logback API directly for logging, but that is highly discouraged. All logback documentation and examples on loggers are written in terms of the SLF4J ...
Basic HTTP and Bearer Token Authentication
...sible. But as also stated ""The user agent MUST choose to use one of the challenges with the strongest auth-scheme it understands and request credentials from the user based upon that challenge." So like i have written 2 days ago i needed to pass the token to a non-standard header which is absolutel...
Using HTML5/Canvas/JavaScript to take in-browser screenshots
...mplementation of it into sending feedbacks like you described.
The script allows you to create feedback forms which include a screenshot, created on the client's browser, along with the form. The screenshot is based on the DOM and as such may not be 100% accurate to the real representation as it do...
PHP/MySQL insert row then get 'id'
...ithin its own isolated session, which is where the ID comes from when you call mysql_insert_id() from your PHP (or LAST_INSERT_ID() in MySQL)
– rodrigo-silveira
Sep 26 '12 at 18:22
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Efficient SQL test query or validation query that will work across all (or most) databases
...for idleness. For example, the JDBC pooling library c3p0 has a property called preferredTestQuery , which gets executed on the connection at configured intervals. Similarly, Apache Commons DBCP has validationQuery .
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