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How to keep index when using pandas merge
I would like to merge two DataFrames , and keep the index from the first frame as the index on the merged dataset. However, when I do the merge, the resulting DataFrame has integer index. How can I specify that I want to keep the index from the left data frame?
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How to generate a number of most distinctive colors in R?
I am plotting a categorical dataset and want to use distinctive colors to represent different categories. Given a number n , how can I get n number of MOST distinctive colors in R? Thanks.
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How do ports work with IPv6?
...t changed between the two versions is the addressing scheme, DHCP [DHCPv6] and ICMP [ICMPv6]. So basically, anything TCP/UDP related, including the port range (0-65535) remains unchanged.
Edit: Port 0 is a reserved port in TCP but it does exist. See RFC793
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Is there a pretty print for PHP?
I'm fixing some PHP scripts and I'm missing ruby's pretty printer. i.e.
31 Answers
31
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Convert string to title case with JavaScript
...r example? I don't know, why you would want to include anything but spaces and therefore change Jim-Bob to Jim-bob.
– martinczerwi
Jan 9 '13 at 9:17
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How do you loop in a Windows batch file?
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FOR %%A IN (list) DO command parameters
list is a list of any elements, separated by either spaces, commas or semicolons.
command can be any internal or external command, batch file or even - in OS/2 and NT - a list of commands
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PDO closing connection
...ber of other reasons. When connecting or running a query, catch any error, and if it is "MySQL has gone away", attempt to connect again or run the query a second time.
– Frank Forte
Dec 14 '17 at 20:50
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How to calculate cumulative normal distribution?
...f(-1.96)
0.024997895148220435
In other words, approximately 95% of the standard normal interval lies within two standard deviations, centered on a standard mean of zero.
If you need the inverse CDF:
>>> norm.ppf(norm.cdf(1.96))
array(1.9599999999999991)
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How can I handle the warning of file_get_contents() function in PHP?
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Step 1: check the return code: if($content === FALSE) { // handle error here... }
Step 2: suppress the warning by putting an error control operator (i.e. @) in front of the call to file_get_contents():
$content = @file_get_contents($site);
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What are the differences between segment trees, interval trees, binary indexed trees and range trees
...re differences between segment trees, interval trees, binary indexed trees and range trees in terms of:
2 Answers
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