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Check if database exists in PostgreSQL using shell
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(4 rows)
Using the naive approach means that searching for a database called "List, "Access" or "rows" will succeed. So we pipe this output through a bunch of built-in command line tools to only search in the first column.
The -t flag removes headers and footers:
my_db | my_user | UT...
Handling JSON Post Request in Go
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Thanks! I see where I was going wrong now. If you call req.ParseForm(), which I was doing in earlier attempts of trying to solve this problem, before you try and read the req.Body, it seems to clear the body out and unexpected end of JSON input is thrown when you go to Unmar...
How to “comment-out” (add comment) in a batch/cmd?
... how using :: labels as comments can cause difficult-to-anticipate errors. Calling this clean is a bit misleading @ATSiem
– Jean-François Corbett
Mar 2 '18 at 8:31
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Arduino Sketch upload issue - avrdude: stk500_recv(): programmer is not responding
... it works. I figured the packets were some attempt at a hand-shake. So basically, I solved it using Google, patience and futzing around with the board!
– hoipolloi
Jan 12 '14 at 18:16
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How to create .pfx file from certificate and private key?
... more effort than meddling around with openssl - one tool, one commandline call, one password, done. Also I don't know if all ssl companies support this approach.
– Jan Bühler
Aug 6 '15 at 9:02
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What would cause an algorithm to have O(log log n) complexity?
...of a problem that yields runtimes of the form O(log log n). Instead of dividing the input in half at each layer, what happens if we take the square root of the size at each layer?
For example, let's take the number 65,536. How many times do we have to divide this by 2 until we get down to 1? If w...
Visual Studio: How do I show all classes inherited from a base class?
...ides and an interface method's implementations. For an interface you could call "Find Usages Advanced" again, just right click) where to find all extendings and implementations. For a type - derived types.
And my favorite feature - click with holding Control on any type/method for navigating to its...
How to calculate an angle from three points? [closed]
...a handful of languages use a caret for 'power of', so if you don't want to call it arcos, please just type cos⁻¹. (If you're using a commercial operating system that makes it difficult to type exponents, I expect there would be keycaps applications you could buy, or maybe a browser plug-in you co...
C#: why sign an assembly?
... by web application in the same iis. Which i don't recommend. we should be calling them thru api url, rather than using those dll's from GAC(microservice architecture).
– Karthikeyan VK
May 9 '17 at 4:54
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In Java, how do I convert a byte array to a string of hex digits while keeping leading zeros? [dupli
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When I called Integer.toHexString((byte)0xff) it returned "ffffffff" because of sign extension. So one might need to take the last two characters of the returned string.
– Marvo
Jul 27 '12 at ...