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How long is the SHA256 hash?
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346
A sha256 is 256 bits long -- as its name indicates.
Since sha256 returns a hexadecimal repres...
My attempt at value initialization is interpreted as a function declaration, and why doesn't A a(())
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edited Jun 28 '18 at 10:23
vll
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answered Sep 15 '...
how do you filter pandas dataframes by multiple columns
...={}
for g in ['male', 'female']:
dic[g]=defaultdict(dict)
for y in [2013, 2014]:
dic[g][y]=df[(df[Gender]==g) & (df[Year]==y)] #store the DataFrames to a dict of dict
EDIT:
A demo for your getDF:
def getDF(dic, gender, year):
return dic[gender][year]
print genDF(dic, 'male', 2014)...
How do I add files without dots in them (all extension-less files) to the gitignore file?
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3 Answers
3
Active
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mongodb/mongoose findMany - find all documents with IDs listed in array
...ame.
model.find({
'_id': { $in: [
mongoose.Types.ObjectId('4ed3ede8844f0f351100000c'),
mongoose.Types.ObjectId('4ed3f117a844e0471100000d'),
mongoose.Types.ObjectId('4ed3f18132f50c491100000e')
]}
}, function(err, docs){
console.log(docs);
});
This method will ...
Gradient of n colors ranging from color 1 and color 2
...orRampPalette(c("black", "white"))
colfunc(10)
# [1] "#000000" "#1C1C1C" "#383838" "#555555" "#717171" "#8D8D8D" "#AAAAAA"
# [8] "#C6C6C6" "#E2E2E2" "#FFFFFF"
And just to show it works:
plot(rep(1,10),col=colfunc(10),pch=19,cex=3)
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How to make a new line or tab in XML (eclipse/android)?
... aleksandrbel
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answered Dec 30 '12 at 15:05
Boris StrandjevBoris Strandjev
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C pointer to array/array of pointers disambiguation
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13 Answers
13
Active
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Display open transactions in MySQL
...L docs: http://dev.mysql.com/doc/refman/5.0/en/mysql-tips.html
4.5.1.6.3. Disabling mysql Auto-Reconnect
If the mysql client loses its connection to the server while sending a statement, it immediately and automatically tries to reconnect once to the server and send the statement again. How...
Postgresql aggregate array
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163
Use array_agg: http://www.sqlfiddle.com/#!1/5099e/1
SELECT s.name, array_agg(g.Mark) as marks ...