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Oracle: how to UPSERT (update or insert into a table?)
...swered Oct 27 '08 at 11:12
Tony AndrewsTony Andrews
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Java associative-array
How can I create and fetch associative arrays in Java like I can in PHP?
15 Answers
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How to read data when some numbers contain commas as thousand separator?
... some of the numerical values are expressed as strings with commas as thousand separator, e.g. "1,513" instead of 1513 . What is the simplest way to read the data into R?
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Why `null >= 0 && null
...utine that increments the value of a variable by 1 if its type is number and assigns 0 to the variable if not, where the variable is initially null or undefined .
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LINQ with groupby and count
...g>, where each Grouping itself exposes the Key used to create the group and also is an IEnumerable<T> of whatever items are in your original data set. You just have to call Count() on that Grouping to get the subtotal.
foreach(var line in data.GroupBy(info => info.metric)
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If list index exists, do X
In my program, user inputs number n , and then inputs n number of strings, which get stored in a list.
12 Answers
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Gmail Error :The SMTP server requires a secure connection or the client was not authenticated. The s
...in from different time zone or IP Address Computer. Your production server and the mail id you have used both are in different time zone. Choose either of these two solutions:
1) Log in to production server via remote access, and sign in to gmail once with your credentials. They will ask for the co...
How to add multiple files to Git at the same time
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git commit -a is shorthand for git commit --all, so yes, it will.
– dax
Jul 12 '16 at 15:15
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How can I configure NetBeans to insert tabs instead of a bunch of spaces?
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Go to Tools-> Options-> Editor-> Formatting and uncheck Expand tabs to spaces:
Ensure you also pick coherent values for "Number of Spaces per indent" and "Tab Size".
Additionally, you can check all the items in the Language combo and make sure they all use the ge...
Drop all duplicate rows across multiple columns in Python Pandas
The pandas drop_duplicates function is great for "uniquifying" a dataframe. However, one of the keyword arguments to pass is take_last=True or take_last=False , while I would like to drop all rows which are duplicates across a subset of columns. Is this possible?
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