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Write to file, but overwrite it if it exists
...he file if it doesn't exist, but overwrites it if it already exists. Right now this script just appends.
8 Answers
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How to 'bulk update' with Django?
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Update:
Django 2.2 version now has a bulk_update.
Old answer:
Refer to the following django documentation section
Updating multiple objects at once
In short you should be able to use:
ModelClass.objects.filter(name='bar').update(name="foo")
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How to convert an OrderedDict into a regular dict in python3
...= OrderedDict([('method', 'constant'), ('data', '1.225')])
d2 = dict(d) # Now a normal dict
Now to check this:
>>> type(d2)
<class 'dict'>
>>> isinstance(d2, OrderedDict)
False
>>> isinstance(d2, dict)
True
NOTE: This also works, and gives same result -
>>&g...
Difference between reduce and foldLeft/fold in functional programming (particularly Scala and Scala
...rList.foldLeft(0)(_ + _))
Took 2589.363031 milli seconds
reduce vs fold
Now this is where it gets a little closer to the FP / mathematical roots, and a little trickier to explain. Reduce is defined formally as part of the MapReduce paradigm, which deals with orderless collections (multisets), Fo...
Does a javascript if statement with multiple conditions test all of them?
...bles, each function may take a long time, and not only is it important to know this short circuits, but in what order. For example:
if (takesSeconds() && takesMinutes())
is much better than
if (takesMinutes() && takesSeconds())
if both are equally likely to return false.
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Do you (really) write exception safe code? [closed]
...sure your code is exception safe. But then, you strive for it, using well-known patterns, and avoiding well-known anti-patterns.
Do you know and/or actually use alternatives that work?
There are no viable alternatives in C++ (i.e. you'll need to revert back to C and avoid C++ libraries, as well as...
Sort Go map values by keys
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Ah, okay. Thank you for teaching me. Now, it is printing all even then all odd. play.golang.org/p/K2y3m4Zzqd How can I get it to alternate so that it is in order?
– gramme.ninja
Apr 28 '14 at 2:20
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What does “Auto packing the repository for optimum performance” mean?
...bjects, so Git initially creates loose objects, then packs them in batches now and then, via automatic invocation of git gc --auto.
If you let Git finish repacking, this won't happen again for a while. It can indeed take a while, especially if you have a lot of large binary objects, but if it's tri...
How to install grunt and how to build script with it
...or combining files together:
npm install grunt-contrib-concat --save-dev
Now you need to setup your Gruntfile.js which will describe your build process. For this sample I just combine two JS files file1.js and file2.js in the js folder and generate app.js:
module.exports = function(grunt) {
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How do I enlarge an EER Diagram in MySQL Workbench?
...mplex schema in MySQL Workbench, and the single page of the EER diagram is now full up. Does anyone know how to enlarge it to two or more pages?
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