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argparse store false if unspecified
...fault value of False.
Likewise, store_false will default to True when the command-line argument is not present.
The source for this behavior is succinct and clear: http://hg.python.org/cpython/file/2.7/Lib/argparse.py#l861
The argparse docs aren't clear on the subject, so I'll update them now: h...
Android Studio needs JDK 7 for Android-L mac
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How Do I Use Factory Girl To Generate A Paperclip Attachment?
...ctoryGirl.define block (which isn't what happens in this gist: gist.github.com/313121).
– Sam
Dec 24 '12 at 15:44
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How to Convert all strings in List to lower case using LINQ?
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How do I select the parent form based on which submit button is clicked?
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In Python, how do I create a string of n characters in one line of code?
..._val = "x" * 10 # gives you "xxxxxxxxxx"
And if you want something more complex, like n random lowercase letters, it's still only one line of code (not counting the import statements and defining n):
from random import choice
from string import ascii_lowercase
n = 10
string_val = "".join(choice...
mongodb group values by multiple fields
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This turns out to be very difficult to do, but it can be done though the complexity just increases with the number of items you need to match. To keep it simple we can keep this at 2 matches at most:
db.books.aggregate([
{ "$group": {
"_id": {
"addr": "$addr",
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How does “make” app know default target to build if no target is specified?
Most linux apps are compiled with:
3 Answers
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Show filename and line number in grep output
... also for me. I was in need of searching recursively and used this example command: grep -Hnor "localhost" . This listet up all matches with file name and line number, short and concise.
– Tore Aurstad
Sep 10 '18 at 8:25
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invalid target release: 1.7
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jdk8 can also be used to get jdk7 compliance
– Wolfgang Fahl
Feb 11 '14 at 14:21
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