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C fopen vs open
...pen() does not provide the same level of control when opening files, for example create permissions, sharing modes, and more. typically open() and variants provide much more control, close to what the operating system actually provides
– Matt Joiner
Nov 7 '09 a...
window.close and self.close do not close the window in Chrome
...dow.open method.
If you try to use window.close from a Greasemonkey / Tampermonkey / userscript you will get:
Firefox: The error message, "Scripts may not close windows that were not opened by script."
Chrome: just silently fails.
The long-term solution:
The best way to deal with this is t...
What's the difference between a web site and a web application? [closed]
...ites are primarily informational. In this sense, http://cnn.com and http://php.net are websites, not web applications.
Web applications primarily allow the user to perform actions. Google Analytics, gmail, and jslint are web applications.
They are not entirely exclusive. A university website lik...
Date vs DateTime
...y, processing Irish mortgage applications in New Zealand as a non-random example.
– Roger Willcocks
May 7 '19 at 2:27
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No grammar constraints (DTD or XML schema) detected for the document
...ATA)>
<!ELEMENT nameOfChildElement2 (#PCDATA)>
<!ENTITY nbsp " ">
<!ENTITY author "Your Author Name">
]>
Meaning of above lines...
Line 1) Root element defined as "nameOfYourRootElement"
Line 2) Start of element definitions
Line 3) Root element children defined as...
What can I use instead of the arrow operator, `->`?
...ereferencing a pointer and then use the .-operator on that address.
For example:
If you have a an object, anObject, and a pointer, aPointer:
SomeClass anObject = new SomeClass();
SomeClass *aPointer = &anObject;
To be able to use one of the objects methods you dereference the pointer and do...
Algorithm to return all combinations of k elements from n
... set it's best to use a modified gray code algorithm so you aren't holding all of them in memory. These generate the next combination from the previous and avoid repetitions. There are many of these for different uses. Do we want to maximize the differences between successive combinations? minimize?...
Selecting a row of pandas series/dataframe by integer index
I am curious as to why df[2] is not supported, while df.ix[2] and df[2:3] both work.
6 Answers
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Regex, every non-alphanumeric character except white space or colon
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[^a-zA-Z\d\s:]
\d - numeric class
\s - whitespace
a-zA-Z - matches all the letters
^ - negates them all - so you get - non numeric chars, non spaces and non colons
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Get list of databases from SQL Server
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This does not work. Perhaps you meant > 4? Tables 5 & 6 are user tables.
– Outside the Box Developer
Aug 24 '11 at 19:58
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