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How to write DataFrame to postgres table?
... the table
conn = engine.raw_connection()
cur = conn.cursor()
output = io.StringIO()
df.to_csv(output, sep='\t', header=False, index=False)
output.seek(0)
contents = output.getvalue()
cur.copy_from(output, 'table_name', null="") # null values become ''
conn.commit()
...
Remove directory which is not empty
...amed function to rimraf ;)
/**
* Remove directory recursively
* @param {string} dir_path
* @see https://stackoverflow.com/a/42505874/3027390
*/
function rimraf(dir_path) {
if (fs.existsSync(dir_path)) {
fs.readdirSync(dir_path).forEach(function(entry) {
var entry_path = ...
How to get request URI without context path?
...a prefix pattern, then you can just use HttpServletRequest#getPathInfo().
String pathInfo = request.getPathInfo();
// ...
Assuming that the servlet in your example is mapped on /secure, then this will return /users which would be the information of sole interest inside a typical front controller ...
ASP.NET MVC - Set custom IIdentity or IPrincipal
...ce
interface ICustomPrincipal : IPrincipal
{
int Id { get; set; }
string FirstName { get; set; }
string LastName { get; set; }
}
CustomPrincipal
public class CustomPrincipal : ICustomPrincipal
{
public IIdentity Identity { get; private set; }
public bool IsInRole(string role) ...
Storing integer values as constants in Enum manner in java [duplicate]
...e() {
return constValue;
}
}
public static void main(String[] args) {
System.out.println("Name: " + PAGE.SIGN_CREATE.name());
System.out.println("Ordinal: " + PAGE.SIGN_CREATE.ordinal());
System.out.println("Const: " + PAGE.SIGN_CREATE.constValue());
...
How can I get file extensions with JavaScript?
...not a path, for practical reasons, I think it should be return filename.substring(0,1) === '.' ? '' : filename.split('.').slice(1).pop() || ''; This takes care of .file (Unix hidden, I believe) kind of files too. That is if you want to keep it as a one-liner, which is a bit messy to my taste.
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What are the underlying data structures used for Redis?
...u asked, here is the underlying implementation of every Redis data type.
Strings are implemented using a C dynamic string library so that we don't pay (asymptotically speaking) for allocations in append operations. This way we have O(N) appends, for instance, instead of having quadratic behavior.
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MySQL - Rows to Columns
...le of years late, I had to use MAX instead of SUM because my itemValue are strings, not numerical values.
– Merricat
Jun 17 at 17:55
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Search text in fields in every table of a MySQL database
I want to search in all fields from all tables of a MySQL database a given string, possibly using syntax as:
24 Answers
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Is it possible dynamically to add String to String.xml in Android?
Is it possible to have placeholders in string values in string.xml that can be assigned values at run time?
13 Answers
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