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How to switch between hide and view password
Is there a clever way to let the user switch between hide and view password in an android EditText?
A number of PC based apps let the user do this.
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“Inner exception” (with traceback) in Python?
My background is in C# and I've just recently started programming in Python. When an exception is thrown I typically want to wrap it in another exception that adds more information, while still showing the full stack trace. It's quite easy in C#, but how do I do it in Python?
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Implementing INotifyPropertyChanged - does a better way exist?
...ropertyChanged
{
// boiler-plate
public event PropertyChangedEventHandler PropertyChanged;
protected virtual void OnPropertyChanged(string propertyName)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null) handler(this, new PropertyChangedEven...
Sample random rows in dataframe
...propriate function that would return a specified number of rows picked up randomly without replacement from a data frame in R language? Can anyone help me out?
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How to truncate milliseconds off of a .NET DateTime
...ue. SQL Server of course keeps some precision of milliseconds on the time, and when read into a .NET DateTime, it includes those milliseconds. The incoming request to the system, however, does not offer that precision, so I need to simply drop the milliseconds.
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Java exception not caught?
...ptly for reason S, then the try statement completes abruptly for reason S (and reason R is discarded).
So, when there is a catch block that throws an exception:
try {
// ...
} catch (Exception e) {
throw new Exception("2");
}
but there is also a finally block that also throws an exceptio...
Where to place JavaScript in an HTML file?
...rs download components.
Of course Levi's comment "just before you need it and no sooner" is really the correct answer, i.e. "it depends".
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Java - escape string to prevent SQL injection
I'm trying to put some anti sql injection in place in java and am finding it very difficult to work with the the "replaceAll" string function. Ultimately I need a function that will convert any existing \ to \\ , any " to \" , any ' to \' , and any \n to \\n so that when the string is e...
What is the recommended batch size for SqlBulkCopy?
...s my SQL Server instance. Using a custom IDataReader, it parses flat files and inserts them into a database using SQLBulkCopy. A typical file has about 6M qualified rows, averaging 5 columns of decimal and short text, about 30 bytes per row.
Given this scenario, I found a batch size of 5,000 to be...
How to copy from CSV file to PostgreSQL table with headers in CSV file?
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I think the problem with this command is, that you have to be the DB superuser. \copy works as normal user, too
– Exocom
Feb 8 '14 at 13:00
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