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Ordering by the order of values in a SQL IN() clause
..., 'c')
will return 1
FIELD('a', 'c', 'b', 'a')
will return 3
This will do exactly what you want if you paste the ids into the IN() clause and the FIELD() function in the same order.
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Pass ruby script file to rails console
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This works great. But unless I'm doing something wrong, you do not have access to objects created inside the script. Any way to do that? The use case is to set up some objects, then interactively explore them. Is that possible?
– Dan Ba...
Counter increment in Bash loop not working
...FILE) + 1]
# Store the new value
echo $COUNTER > $TEMPFILE
# Loop done, script done, delete the file
unlink $TEMPFILE
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Must Dependency Injection come at the expense of Encapsulation?
...s constructor parameters or whatever) is a key part of this. Encapsulation doesn't really apply, as in the component/service oriented world, there is no 'implementation type' for details to leak from.
Unfortunately our languages don't currently segregate the fine-grained, object-oriented concepts f...
using gitignore to ignore (but not delete) files
...ng changes to this directory, but still allow it to exist? I also need to do this for 1 file, but changes to that also show up in git status after .gitignore ing them. What should I do?
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HTTPURLConnection Doesn't Follow Redirect from HTTP to HTTPS
I can't understand why Java's HttpURLConnection does not follow an HTTP redirect from an HTTP to an HTTPS URL. I use the following code to get the page at https://httpstat.us/ :
...
How does the ARM architecture differ from x86? [closed]
...s like USBs, need for such features are also disappearing.
If you need a document to quote, this is what Cortex-A Series Programmers Guide (4.0) tells about differences between RISC and CISC architectures:
An ARM processor is a Reduced Instruction Set Computer (RISC)
processor.
Complex ...
Do I need to heartbeat to keep a TCP connection open?
...lives is o keep the connection open through nat gateways. While TCP itself doesn't need keepalives to operate, it's common for nat gateways to "drop" a tcp connection after a given timeout.
– nos
Nov 30 '09 at 23:48
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Polymorphism in C++
...e able to operate with values of at least two distinct types (e.g. int and double), finding and executing distinct type-appropriate code.
C++ mechanisms for polymorphism
Explicit programmer-specified polymorphism
You can write f() such that it can operate on multiple types in any of the follow...
PHP - Extracting a property from an array of objects
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This solutions doesn't answer the question because, array_column doesn't work with an array of objects at all. Since PHP 7.0.0 is is possible: stackoverflow.com/a/23335938/655224
– algorhythm
May 23 '1...