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When is null or undefined used in JavaScript? [duplicate]
... undefined is of type undefined.
I should also note that null is valid in JSON but undefined is not:
JSON.parse(undefined); //syntax error
JSON.parse(null); //null
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...
libcurl的使用总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
....h即可）
curl/lib/.lib/ ： lib文件目录（有libcurl.a和libcurl.so，注意，如果这两个文件在同一目录下，-lcurl默认是链接.so滴）
二.函数简要说明
在基于LibCurl的程序里，主要采用callback function （回调函数）的形式完成传输...
jQuery UI datepicker change event not caught by KnockoutJS
...r()),
$el = $(element);
//handle date data coming via json from Microsoft
if (String(value).indexOf('/Date(') == 0) {
value = new Date(parseInt(value.replace(/\/Date\((.*?)\)\//gi, "$1")));
}
var current = $el.datepicker("getDate");
...
How do I call the default deserializer from a custom deserializer in Jackson
...tatic final long serialVersionUID = 7923585097068641765L;
private final JsonDeserializer<?> defaultDeserializer;
public UserEventDeserializer(JsonDeserializer<?> defaultDeserializer)
{
super(User.class);
this.defaultDeserializer = defaultDeserializer;
}
@Override pub...
Get list of data-* attributes using javascript / jQuery
...w. I had been using beautify.js from jsbeautifier.org to pretty print the JSON. Apparently that link is broken now. But, that was overkill since JSON.stringify() has JSON formatting built in.
– gilly3
Feb 20 '15 at 17:40
...
How to pretty print XML from the command line?
Related: How can I pretty-print JSON in (unix) shell script?
8 Answers
8
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How to trigger a build only if changes happen on particular set of files
...${job_name}/"
FILTER_PATH="path/to/folder/to/monitor"
python_func="import json, sys
obj = json.loads(sys.stdin.read())
ch_list = obj['changeSet']['items']
_list = [ j['affectedPaths'] for j in ch_list ]
for outer in _list:
for inner in outer:
print inner
"
_affected_files=`curl --silent ${JO...
How to find Unused Amazon EC2 Security groups
... assigned to Instances
for groupId in `aws ec2 describe-instances --output json | jq -r ".Reservations[].Instances[].SecurityGroups[].GroupId" | sort | uniq`
do
if [ $EC2LOOP -eq 0 ];
then
DEL_GROUP="'$groupId'"
else
DEL_GROUP=$DEL_GROUP",'$groupId'"
fi
let EC2LOO...
Read file data without saving it in Flask
...:
import io
from pathlib import Path
def test_my_upload(self, accept_json):
"""Test my uploads endpoint for POST."""
data = {
"filePath[]": "/tmp/bin",
"manifest[]": (io.StringIO(str(Path(__file__).parent /
"pat...
What to use as an initial version? [closed]
...a pitfall if you using npm. If you start with 0, caret sign "^" in package.json will behave different. docs.npmjs.com/misc/semver#caret-ranges-123-025-004 You can use 0.x instead of ^0. in package json for this scenario. Therefore, 1.x is a bit more easy to start and use.
– Sam...