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How to write DataFrame to postgres table?
There is DataFrame.to_sql method, but it works only for mysql, sqlite and oracle databases. I cant pass to this method postgres connection or sqlalchemy engine.
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What's the difference between subprocess Popen and call (how can I use them)?
I want to call an external program from Python. I have used both Popen() and call() to do that.
2 Answers
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What is the difference between Android margin start/end and right/left?
What is difference between Android margin start and right (or margin end and left)?
2 Answers
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Can You Get A Users Local LAN IP Address Via JavaScript?
I know the initial reaction to this question is "no" and "it can't be done" and "you shouldn't need it, you are doing something wrong". What I'm trying to do is get the users LAN IP address, and display it on the web page. Why? Because that's what the page I'm working on is all about, showing as muc...
Logging framework incompatibility
I'm building a small Java app and hoping to use logback for logging.
3 Answers
3
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Match multiline text using regular expression
... assumption.
Pattern.MULTILINE or (?m) tells Java to accept the anchors ^ and $ to match at the start and end of each line (otherwise they only match at the start/end of the entire string).
Pattern.DOTALL or (?s) tells Java to allow the dot to match newline characters, too.
Second, in your case, ...
How do you use String.substringWithRange? (or, how do Ranges work in Swift?)
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You can use the substringWithRange method. It takes a start and end String.Index.
var str = "Hello, playground"
str.substringWithRange(Range<String.Index>(start: str.startIndex, end: str.endIndex)) //"Hello, playground"
To change the start and end index, use advancedBy(n).
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Purpose of asterisk before a CSS property
...immediately before a
property name, the property will be
applied in IE and not in other
browsers. Unlike with the hyphen and
underscore method, the CSS
specification makes no reservations
for the asterisk as a prefix, so use
of this hack could result in
unexpected behavior as the CSS...
How can I sanitize user input with PHP?
...tion somewhere that works well for sanitizing user input for SQL injection and XSS attacks, while still allowing certain types of HTML tags?
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What are the best practices for JavaScript error handling?
I'm looking to start making my JavaScript a bit more error proof, and I'm finding plenty of documentation on using try , catch , finally , and throw , but I'm not finding a ton of advice from experts on when and where to throw errors.
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