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What's the fastest way to do a bulk insert into Postgres?
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Most important in this kind of procedure (raw data ingestion) is the transformation, expressed in a SQL standard (no use of exotic tools). See stackoverflow.com/a/62493516/287948
– Peter Krauss
Aug 26 at 13:51
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How to check if smtp is working from commandline (Linux) [closed]
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Syntax for establishing a raw network connection using telnet is this:
telnet {domain_name} {port_number}
So telnet to your smtp server like
telnet smtp.mydomain.com 25
And copy and paste the below
helo client.mydomain.com
mail from:<sender@...
Convert hex to binary
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Here's a fairly raw way to do it using bit fiddling to generate the binary strings.
The key bit to understand is:
(n
How random is JavaScript's Math.random?
...re actually expected. If the random numbers are uniformly distributed in a range 1 to 10^n, then you would expect about 9/10 of the numbers to have n digits, and a further 9/100 to have n-1 digits.
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Maximum length of HTTP GET request
...'t impose any hard-coded limit on request length; but browsers have limits ranging on the 2 KB - 8 KB (255 bytes if we count very old browsers).
Is there a response error defined that the server can/should return if it receives a GET request exceeds this length?
That's the one nobody has ans...
Remove all special characters, punctuation and spaces from string
...topic (and very pedantic) but I suggest a habit that all regex patterns be raw strings
– Bob Stein
Jun 7 '18 at 13:41
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Output data from all columns in a dataframe in pandas [duplicate]
... = 4):
pd.set_option('display.expand_frame_repr', False)
seq = np.arange(0, len(x.columns), ncol)
for i in seq:
print(x.loc[range(0, nrow), x.columns[range(i, min(i+ncol, len(x.columns)))]])
pd.set_option('display.expand_frame_repr', True)
(it depends on pandas and numpy, o...
How to Set Opacity (Alpha) for View in Android
...yButton.getBackground().setAlpha(128); // 50% transparent
Where the INT ranges from 0 (fully transparent) to 255 (fully opaque).
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Automatic TOC in github-flavoured-markdown
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Yep: maruku.rubyforge.org/maruku.md or raw.github.com/MahApps/MahApps.Metro/gh-pages/index.md
– Rebecca Scott
May 10 '12 at 12:55
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JavaScript get clipboard data on paste event (Cross browser)
...wsers, as is pasting the content into the editor. You need to obtain a TextRange in IE and a Range in other browsers.
– Tim Down
Feb 1 '10 at 14:19
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