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A migration to add unique constraint to a combination of columns
...mns. i.e. for a people table, a combination of first_name , last_Name and Dob should be unique.
6 Answers
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Python's most efficient way to choose longest string in list?
I have a list of variable length and am trying to find a way to test if the list item currently being evaluated is the longest string contained in the list. And I am using Python 2.6.1
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Print current call stack from a method in Python code
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Here's an example of getting the stack via the traceback module, and printing it:
import traceback
def f():
g()
def g():
for line in traceback.format_stack():
print(line.strip())
f()
# Prints:
# File "so-stack.py", line 10, in <module>
# f()
# File "so-stack....
How to run mvim (MacVim) from Terminal?
I have MacVim installed and I am trying to set it up as the editor for Git (version control), but I can't run 'mvim' from the command line as it isn't recognised. How do I setup mvim so I can run it from Terminal?
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error: No resource identifier found for attribute 'adSize' in package 'com.google.example' main.xml
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Replace /res/ with /lib/ in your custom layout nampespace.
xmlns:android="http://schemas.android.com/apk/res/android"
in your case, would be:
xmlns:yourApp="http://schemas.android.com/apk/lib/com.yourAppPackege.yourClass"
I hope it helps.
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What does the “@” symbol do in Powershell?
... in PowerShell to initialise arrays. What exactly does the @ symbol denote and where can I read more about it?
5 Answers
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Git: Find the most recent common ancestor of two branches
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@funroll: Or the shorthand for that: git log master...HEAD
– CB Bailey
Sep 8 '14 at 20:32
17
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Is explicitly closing files important?
... Python aren't guaranteed to work this way. For example IronPython, PyPy, and Jython don't use reference counting and therefore won't close the file at the end of the loop.
It's bad practice to rely on CPython's garbage collection implementation because it makes your code less portable. You might...
How do you return from 'gf' in Vim
...windows installed in Unix mode. Thanks to this site I now use the gf command to go to a file under the cursor.
11 Answers...
Python Selenium accessing HTML source
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Best answer so far! The most immediate and clear way to do this, much more compact that the other, still valid, alternative (find_element_by_xpath("//*").get_attribute("outerHTML")(
– 5agado
Mar 28 '14 at 14:16
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