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Artificially create a connection timeout error
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answered Sep 19 '08 at 10:02
AlexanderAlexander
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Check if something is (not) in a list in Python
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answered May 2 '12 at 0:18
orlporlp
88k2929 gold badges177177 silver badges271271 bronze badges
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Get index of array element faster than O(n)
...['a', 'b', 'c']
hash = Hash[array.map.with_index.to_a] # => {"a"=>0, "b"=>1, "c"=>2}
hash['b'] # => 1
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How to iterate over a JavaScript object?
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906
For most objects, use for .. in :
for (let key in yourobject) {
console.log(key, yourobject[...
Replacing all non-alphanumeric characters with empty strings
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250
Use [^A-Za-z0-9].
Note: removed the space since that is not typically considered alphanumeric....
How to get client's IP address using JavaScript?
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50 Answers
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pip install from git repo branch
... git+https://github.com/tangentlabs/django-oscar-paypal.git@issue/34/oscar-0.6
And specify the branch name without the leading /.
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Padding characters in printf
...ength of the second string if you want ragged-right lines.
pad=$(printf '%0.1s' "-"{1..60})
padlength=40
string2='bbbbbbb'
for string1 in a aa aaaa aaaaaaaa
do
printf '%s' "$string1"
printf '%*.*s' 0 $((padlength - ${#string1} - ${#string2} )) "$pad"
printf '%s\n' "$string2"
str...
MongoDB数据导出导入工具：mongoexport,mongoimport - 大数据 & AI - 清泛...
...，集合中数据如下：
> db.students.find()
{ "_id" : ObjectId("5031143350f2481577ea81e5"), "classid" : 1, "age" : 20, "name" : "kobe" }
{ "_id" : ObjectId("5031144a50f2481577ea81e6"), "classid" : 1, "age" : 23, "name" : "nash" }
{ "_id" : ObjectId("5031145a50f2481577ea81e7"), "classid" :...