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Mongoimport of json file
...,
exec:"/share/home/01482/XXXXX/appker/ranger/NPB3.3.1/NPB3.3-MPI/bin/ft.D.64",
numNodes:"4",
sha1:"5a79879235aa31b6a46e73b43879428e2a175db5",
execEpoch:1336766742,
execModify:{"$date" : 1343779200000},
startTime:{"$date" : 1343779200000},
numCores:"64",
sizeT:{bss:"1881400168",text:"239574",data:"2...
What's the meaning of interface{}?
...akes a copy of b rather than point at b for the same reason that var c uint64 = b makes a copy: if b later changes, s and c are supposed to have the original value, not the new one.
Values stored in interfaces might be arbitrarily large, but only one word is dedicated to holding the value in the i...
How do I check which version of NumPy I'm using?
...David CDavid C
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How to add a new row to an empty numpy array
... proper dimensionality.
>>> arr
array([], shape=(0, 3), dtype=int64)
Then be sure to append along axis 0:
arr = np.append(arr, np.array([[1,2,3]]), axis=0)
arr = np.append(arr, np.array([[4,5,6]]), axis=0)
But, @jonrsharpe is right. In fact, if you're going to be appending in a loop,...
2015年硅谷最火的高科技创业公司都有哪些 - 资讯 - 清泛网 - 专注C/C++及内核技术
...2015年硅谷最火的高科技创业公司都有哪些？编辑君给各位创业者、读者带来来自硅谷一手的思考。
在硅谷大家非常热情的谈创业谈机会，我也通过自己的一些观察和积累，看到了不少最近几年涌现的热门创业公司。我给大家一...
In C++, is it still bad practice to return a vector from a function?
... Mgetz
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answered Jun 28 '10 at 17:55
Peter AlexanderPeter Alexander
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What is “loose coupling?” Please provide examples
... answered Oct 22 '08 at 18:35
64BitBob64BitBob
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How do I make JavaScript beep?
...
Solution
You can now use base64 files to produce sounds when imported as data URI. The solution is almost the same as the previous ones, except you do not need to import an external audio file.
function beep() {
var snd = new Audio("data:audio/wav;b...
Read a zipped file as a pandas DataFrame
...In [12]: crime2013
Out[12]:
<class 'pandas.core.frame.DataFrame'>
Int64Index: 24567 entries, 0 to 24566
Data columns (total 15 columns):
CCN 24567 non-null values
REPORTDATETIME 24567 non-null values
SHIFT 24567 non-null va...
Creating an empty Pandas DataFrame, then filling it?
...C': 'xyz'}, ignore_index=True)
df.dtypes
A object # yuck!
B float64
C object
dtype: object
Dealing with object columns is never a good thing, because pandas cannot vectorize operations on those columns. You will need to do this to fix it:
df.infer_objects().dtypes
A int64
B fl...