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Overload with different return type in Java?
Why is it not possible to overload a function just by changing the return type? Will that change in a future version of Java?
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Assign pandas dataframe column dtypes
I want to set the dtype s of multiple columns in pd.Dataframe (I have a file that I've had to manually parse into a list of lists, as the file was not amenable for pd.read_csv )
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How to split last commit into two in Git
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You should use the index. After doing a mixed reset ("git reset HEAD^"), add
the first set of changes into the index, then commit them. Then commit the
rest.
You can use "git add" to put all changes made in a file to the index. If you
don't want to stage every modificatio...
File Upload using AngularJS
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<input data-my-Directive type="file" name="file">
PHP:
if (isset($_FILES['file']) && $_FILES['file']['error'] == 0) {
// uploads image in the folder images
$temp = explode(".", $_FILES["file"]["name"]);
$newfilename = substr(md5(time()), 0, 10) . '.' . end($temp);
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The modulo operation on negative numbers in Python
I've found some strange behaviour in Python regarding negative numbers:
8 Answers
8
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efficient circular buffer?
...larlist(4, [1, 2, 3, 4, 5]) # [2, 3, 4, 5] (4 items)
circularlist(4, set([1, 2, 3, 4, 5])) # [2, 3, 4, 5] (4 items)
circularlist(4, (1, 2, 3, 4, 5)) # [2, 3, 4, 5] (4 items)
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im...
data.frame rows to a list
...es of xy.df to be the names of the output list, you can do:
xy.list <- setNames(split(xy.df, seq(nrow(xy.df))), rownames(xy.df))
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Dynamically select data frame columns using $ and a character value
...m to extract that column from a data.frame. For example, consider the data set mtcars and some variable names stored in a character vector cols . When I try to select a variable from mtcars using a dynamic subset of cols , nether of these work
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How can I transform string to UTF-8 in C#?
...database field structure i phpmyadmin [ or any other control panel] should set to utf8-gerneral-ci
2) you should change your string [Ex. textbox1.text] to byte, therefor
2-1) define byte[] st2;
2-2) convert your string [textbox1.text] to unicode [ mmultibyte string] by :
byte[] st2 = System.Te...
How to access the last value in a vector?
Suppose I have a vector that is nested in a dataframe one or two levels. Is there a quick and dirty way to access the last value, without using the length() function? Something ala PERL's $# special var?
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