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Copying PostgreSQL database to another server
...o a remote host.
With a big database or a slow connection, dumping a file and transfering the file compressed may be faster.
As Kornel said there is no need to dump to a intermediate file, if you want to work compressed you can use a compressed tunnel
pg_dump -C dbname | bzip2 | ssh remoteuser@...
Why is TypedReference behind the scenes? It's so fast and safe… almost magical!
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Short answer: portability.
While __arglist, __makeref, and __refvalue are language extensions and are undocumented in the C# Language Specification, the constructs used to implement them under the hood (vararg calling convention, TypedReference type, arglist, refanytype, mkanyref...
What are the differences between git branch, fork, fetch, merge, rebase and clone?
I want to understand the difference between a branch, a fork and a clone in Git?
5 Answers
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EF Code First “Invalid column name 'Discriminator'” but no inheritance
...he CREATE TABLE statement). It has a primary key, a couple of foreign keys and nothing special about it. I have many tables in my database similar to that one, but for some reason, this table ended up with a "Discriminator" column on the EF Proxy Class.
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How do I retrieve the number of columns in a Pandas data frame?
How do you programmatically retrieve the number of columns in a pandas dataframe? I was hoping for something like:
6 Answer...
Is there a way to iterate over a dictionary?
...d a key in order to get a value . But how can I iterate over all keys and values in a NSDictionary , so that I know what keys there are, and what values there are? I know there is something called a for-in-loop in JavaScript . Is there something similar in Objective-C ?
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How can I update npm on Windows?
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Does not change the default global package location.
Allows easy upgrades and downgrades.
Officially recommended by the NPM team.
A list of versions matched between NPM and NODE (https://nodejs.org/en/download/releases/) - but you will need to download NODE INSTALLER and run that to update node (ht...
How can I concatenate regex literals in JavaScript?
...3 is now /foobar/gy
It's just more wordy than just having expression one and two being literal strings instead of literal regular expressions.
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Why specify @charset “UTF-8”; in your CSS file?
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It tells the browser to read the css file as UTF-8. This is handy if your CSS contains unicode characters and not only ASCII.
Using it in the meta tag is fine, but only for pages that include that meta tag.
Read about the rules for character set resolution of CSS files at the w3c spe...
Get the current year in JavaScript
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Create a new Date() object and call getFullYear():
new Date().getFullYear()
// returns the current year
Hijacking the accepted answer to provide some basic example context like a footer that always shows the current year:
<footer>
&...