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Django migration strategy for renaming a model and relationship fields
... helpful. But a note - I also had to rename and/or remove PostgreSQL field indexes by hand because, after renaming Foo to Bar, I created a new model named Bar.
– Anatoly Scherbakov
Jun 7 '15 at 18:47
...
What is the difference between RegExp’s exec() function and String’s match() function?
...only when the regex is not global).
Another use with Exec, is getting the index or position, of a match. When you have a variable for your regex, you can use .lastIndex and get the position of the matching. A regex object has .lastIndex, and the regex object is what you do .exec on. Dot match is...
How to disable typing special characters when pressing option key in Mac OS X? [closed]
...ion-b a red colored key - meaning it's a dead key. Double clicking it will allow you to change it from a dead key to an output key. When prompted for the output you can put in the same thing (by pressing Option-b).
Thus it will output the same character but will not be considered a dead key, so In...
How do I remove diacritics (accents) from a string in .NET?
...string> entry in foreign_characters)
{
if(entry.Key.IndexOf (c) != -1)
{
return entry.Value[0];
}
}
return c;
}
public static string RemoveDiacritics(this string s)
{
//StringBuilder sb = new StringB...
How to represent empty char in Java Character class
... main(String[] args) throws Exception {
String s = "abcdefg";
int index = s.indexOf('d');
// delete a char from a char[]
char[] array = s.toCharArray();
char[] tmp = new char[array.length-1];
System.arraycopy(array, 0, tmp, 0, index);
System.arraycopy(array, index+1, tm...
What is the list of valid @SuppressWarnings warning names in Java?
...ble tokens for SupressWarnings is explicit there: help.eclipse.org/galileo/index.jsp?topic=/…
– Peter Štibraný
Sep 8 '09 at 7:27
2
...
Practical uses of git reset --soft?
...D, and generally the branch ref.
Question: what about the working tree and index?
When employed with --soft, moves HEAD, most often updating the branch ref, and only the HEAD.
This differ from commit --amend as:
it doesn't create a new commit.
it can actually move HEAD to any commit (as commit --a...
Is Safari on iOS 6 caching $.ajax results?
...S 6, we are seeing Safari's web view take the liberty of caching $.ajax calls. This is in the context of a PhoneGap application so it is using the Safari WebView. Our $.ajax calls are POST methods and we have cache set to false {cache:false} , but still this is happening. We tried manually ad...
Grep for literal strings
...le, as part of a line in a seperate log file. The search text can contain all sorts of regex special characters, e.g., []().*^$-\ .
...
Pandas DataFrame Groupby two columns and get counts
...e your second question:
In [56]: df.groupby(['col5','col2']).size().reset_index().groupby('col2')[[0]].max()
Out[56]:
0
col2
A 3
B 2
C 1
D 3
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