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How to get the previous URL in JavaScript?
...the URL of the last page the user visited, if they got to the current page by clicking a link (versus typing directly into the address bar, or I believe in some cases, by submitting a form?). Specified by DOM Level 2. More here.
window.history allows navigation, but not access to URLs in the sessio...
Show a number to two decimal places
...imal places. For the OP's purpose - showing an integer to 2 decimal places by padding it with trailing zeroes - you need a number formatting function, not a rounding function.
– Mark Amery
Mar 16 '14 at 21:38
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InputStream from a URL
...on.connect();
int responseCode = con.getResponseCode();
/* By default the connection will follow redirects. The following
* block is only entered if the implementation of HttpURLConnection
* does not perform the redirect. The exact behavior depends to
* th...
Proper way to catch exception from JSON.parse
... If the try block contains more statements, you can identify the exception by e.name == "SyntaxError", provided you don't have an eval.
– user1158559
Dec 20 '15 at 20:54
1
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Unique constraint on multiple columns
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By using the constraint definition on table creation, you can specify one or multiple constraints that span multiple columns. The syntax, simplified from technet's documentation, is in the form of:
CONSTRAINT constraint_name...
What is [Serializable] and when should I use it?
...eloper can perform actions like sending the object to a remote application by means of a Web Service, passing an object from one domain to another, passing an object through a firewall as an XML string, or maintaining security or user-specific information across applications.
Apply SerializableAttri...
How to escape a pipe char in a code statement in a markdown table?
...with a <code></code> markup which fixes the issues more nicely by preserving the rendering
a | r
------------|-----
`a += x;` | r1
<code>a &#124;= y;</code> | r2
generating the following output
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Memory address of variables in Java
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That is the class name and System.identityHashCode() separated by the '@' character. What the identity hash code represents is implementation-specific. It often is the initial memory address of the object, but the object can be moved in memory by the VM over time. So (briefly) you can't ...
Why is the Android test runner reporting “Empty test suite”?
...nfigurations get corrupted if I refactor the class under test (for example by moving to an new package).
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Encrypt Password in Configuration Files? [closed]
... would like to encrypt the password in that configuration that can be read by my program and decrypted.
10 Answers
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