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JavaScript by reference vs. by value [duplicate]
...anges the underlying primitive or object, it just points the variable to a new primitive or object.
However, changing a property of an object referenced by a variable does change the underlying object.
So, to work through some of your examples:
function f(a,b,c) {
// Argument a is re-assigne...
is not JSON serializable
...ur case, self.get_queryset() contains a mix of django objects and dicts inside.
One option is to get rid of model instances in the self.get_queryset() and replace them with dicts using model_to_dict:
from django.forms.models import model_to_dict
data = self.get_queryset()
for item in data:
it...
check if directory exists and delete in one command unix
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}
);
...
Pretty printing XML with javascript
...atchev's answer:
var prettifyXml = function(sourceXml)
{
var xmlDoc = new DOMParser().parseFromString(sourceXml, 'application/xml');
var xsltDoc = new DOMParser().parseFromString([
// describes how we want to modify the XML - indent everything
'<xsl:stylesheet xmlns:xsl="...
git still shows files as modified after adding to .gitignore
...use of an earlier commit, so in order to remove them, you have to create a new commit that removes them from the repository.
– mcls
Jul 19 '16 at 5:47
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Rails 4 image-path, image-url and asset-url no longer work in SCSS files
...loy the a digest appendix will be changed and user's browser will download new version of images.
– Alex Kojin
Aug 17 '17 at 6:47
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How to configure 'git log' to show 'commit date'
...unction () {
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}
);
...
How to format a UTC date as a `YYYY-MM-DD hh:mm:ss` string using NodeJS?
...a toISOString method. You're asking for a slight modification of ISO8601:
new Date().toISOString()
> '2012-11-04T14:51:06.157Z'
So just cut a few things out, and you're set:
new Date().toISOString().
replace(/T/, ' '). // replace T with a space
replace(/\..+/, '') // delete the d...
Most efficient way to increment a Map value in Java
....util.HashMap;
import java.util.Map;
...
Map<String, Integer> freq = new HashMap<String, Integer>();
...
int count = freq.containsKey(word) ? freq.get(word) : 0;
freq.put(word, count + 1);
TestForNull
import java.util.HashMap;
import java.util.Map;
...
Map<String, Integer> freq ...
How can I get dict from sqlite query?
...e docs:
import sqlite3
def dict_factory(cursor, row):
d = {}
for idx, col in enumerate(cursor.description):
d[col[0]] = row[idx]
return d
con = sqlite3.connect(":memory:")
con.row_factory = dict_factory
cur = con.cursor()
cur.execute("select 1 as a")
print cur.fetchone()["a"]
...