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MongoDB: update every document on one field
...ongo only affects the first document and to update all documents resulting from the query one needs to use 'Multi' update flag. Sample code follows...
var collection = db.GetCollection("Foo");
var query = Query.GTE("No", 1); // need to construct in such a way that it will give all 20K //docs.
var u...
Can a dictionary be passed to django models on create?
...is a django database model instance
def toDict( mod ):
import datetime
from decimal import Decimal
import re
#Go through the object, load in the objects we want
obj = {}
for key in mod.__dict__:
if re.search('^_', key):
continue
#Copy my data
if isinstance( mod.__...
What does an underscore in front of an import statement mean?
I saw this example from sqlite3 on GitHub :
4 Answers
4
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Are PHP Variables passed by value or by reference?
...t examples and exactly what I thought would happen. I'm a newcomer to PHP (from Javascript / node.js background) and sometimes it's hard to grok what's going on, but this is very clear!
– TKoL
May 13 '19 at 10:26
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What events does an fire when it's value is changed?
...but only oninput would work in Chrome (and only then when I returned false from the event-handler - otherwise Chrome would repeatedly fire the oninput event)
– Ian Oxley
Oct 15 '10 at 7:51
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Why does Git treat this text file as a binary file?
...
We are both right, but from different perspectives. We both say "Git inspects the contents to determine its type." We both say that to make git know it should be treated as UTF16 the user needs to tell git via .gitattributes etc.
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How do I combine two data frames?
...ta frames. I have a initial data frame, say D . I extract two data frames from it like this:
6 Answers
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How to remove space between axis & area-plot in ggplot2?
...n's answer for further possibilities in the latest versions of ggplot2.
From ?scale_x_continuous about the expand-argument:
Vector of range expansion constants used to add some padding around
the data, to ensure that they are placed some distance away from the
axes. The defaults are to ex...
Compare integer in bash, unary operator expected
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Your problem arises from the fact that $i has a blank value when your statement fails. Always quote your variables when performing comparisons if there is the slightest chance that one of them may be empty, e.g.:
if [ "$i" -ge 2 ] ; then
......
In PHP, what is a closure and why does it use the “use” identifier?
...e's value changes.
Variables defined inside the closure are not accessible from outside the closure either.
Closures and functions have the same speed. Yes, you can use them all over your scripts.
As @Mytskine pointed out probably the best in-depth explanation is the RFC for closures. (Upvote him ...