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Export specific rows from a PostgreSQL table as INSERT SQL script
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Take care that the order of the columns you SELECT matches the order of the columns in the destination database. If it doesn't, this could fail, or worse, succeed but insert bad data.
– Nathan Wallace
Jul ...
Bash script error [: !=: unary operator expected
...nding '-v' anywhere (provided it exists). This means command line argument order is not important. Be forewarned, as presented, the variable arg_match is set, thus it is merely a flag. It allows for multiple occurrences of the '-v' arg. One could ignore all other occurrences of '-v' easy enough.
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FormData.append(“key”, “value”) is not working
...il]":"customer@mail.com" => "user":{"email":"customer@mail.com"}
const orderRes = await fetch(`/api/orders`, {
method: 'POST',
credentials: 'same-origin',
headers: {
'Content-Type': 'application/json'
},
body: JSON.stringify(data)
});
cons...
How to copy files across computers using SSH and MAC OS X Terminal [closed]
...how to use the cp and ssh commands but I'm not sure how to use them in order to transfer files from one computer to another.
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How to convert an array of strings to an array of floats in numpy?
... numpy as np
a = ["1.1", "2.2", "3.2"]
b = np.asarray(a, dtype=np.float64, order='C')
For Python 2*:
print a, type(a), type(a[0])
print b, type(b), type(b[0])
resulting in:
['1.1', '2.2', '3.2'] <type 'list'> <type 'str'>
[1.1 2.2 3.2] <type 'numpy.ndarray'> <type 'numpy.f...
Unable to show a Git tree in terminal
...omment was trying (imperfectly) to convey: you can use those option in any order you want. I just find "log a dog" funny :)
– VonC
Mar 12 '19 at 17:41
1
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Why is no one using make for Java?
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So in order to use make in a huge Java project, it would be necessary to maintain a list of all changed .java files and then call javac at the end? That sounds less than ideal to me. That's the best answer that I've seen so far.
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Best dynamic JavaScript/JQuery Grid [closed]
...valuating DataTables, but adding rows (and having them be part of the sort order) is not working well.
– MattW
Jan 12 '12 at 14:50
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Principal component analysis in Python
....dinv: 1/d or 0, see NR
p.eigen: the eigenvalues of A*A, in decreasing order (p.d**2).
eigen[j] / eigen.sum() is variable j's fraction of the total variance;
look at the first few eigen[] to see how many PCs get to 90 %, 95 % ...
p.npc: number of principal components,
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Rearrange columns using cut
...anges separated by commas. Selected input is written
in the same order that it is read, and is written exactly once.
It reaches field 1 first, so that is printed, followed by field 2.
Use awk instead:
awk '{ print $2 " " $1}' file.txt
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