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How can I clear previous output in Terminal in Mac OS X?
...unction cls { printf '\33c\e[3J\33c' } line in ~/.profile (or system-wide /etc/profile). This should work for desktop environments in macOS, FreeBSD, Linux etc. Note the extra \33c is for clearing the extra \e[3J literal in non-macOS (basically for Linux/FreeBSD, we only need printf '\33c').
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How do I copy a hash in Ruby?
...oning a hash is preventing modification of the original (for immutability, etc).
– K. Carpenter
Feb 10 '15 at 2:24
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What exactly is the meaning of an API? [closed]
...way for an application to interact with certain system/application/library/etc.
For example, there are API's for OS (WinAPI), API's for other applications (like databases) and for specific libraries (for example, image processing), etc.
APIs are usually developed in a form consumable by a client a...
Find html label associated with a given input
... agents and assistive technologies, so test well and use at your own risk, etc. etc.
Yes, you could also implement this without using jQuery. :-)
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Do login forms need tokens against CSRF attacks?
...acker has access to saved payment information, can redirect the purchases, etc.
– you786
Dec 11 '17 at 21:40
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How do I render a partial of a different format in Rails?
...at, whereas the simple approach specifies the template engine (ERB/builder/etc) as well.
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Can we pass parameters to a view in SQL?
...create a settings table in your database, with columns Id, Param1, Param2, etc. Insert a row into that table containing the values Id=1,Param1=0,Param2=0, etc. Then you can add a join to that table in your view to create the desired effect, and update the settings table before running the view. If y...
How to find time complexity of an algorithm
...to do you end up with time complexities like O(N), O(n2), O(log n), O(n!), etc.. I know I may be asking a lot, but still I can try :{)
– Yasser Shaikh
Jun 14 '12 at 11:33
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T-SQL CASE Clause: How to specify WHEN NULL
... for null, and can be verified even in SQL Server by using case statements etc.)
SELECT NULL = NULL -- Results in NULL
SELECT NULL <> NULL -- Results in NULL
So there is no true/false answer to the question, instead the answer is also null.
This has many implications, for example in
CAS...
Android AlertDialog Single Button
...tDialog.Builder(this);
builder.setMessage("Look at this dialog!")
.setCancelable(false)
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
//do things
}
});
AlertDialog aler...