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How to get a URL parameter in Express?
I am facing an issue on getting the value of tagid from my URL: localhost:8888/p?tagid=1234 .
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Cannot deserialize the JSON array (e.g. [1,2,3]) into type ' ' because type requires JSON object (e.
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FYI this didn't work for me because I was getting my JSON from an API and I had the freaking URL wrong for an entire day. ><
– w00ngy
Oct 5 '18 at 13:14
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Memory footprint of Haskell data types
How can I find the actual amount of memory required to store a value of some data type in Haskell (mostly with GHC)? Is it possible to evaluate it at runtime (e.g. in GHCi) or is it possible to estimate memory requirements of a compound data type from its components?
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Is it considered bad practice to perform HTTP POST without entity body?
... it also instructs the server (and gateways along the way) not to return a cached response.
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How big should a UIBarButtonItem image be?
...x square for Retina HD devices (the iPhone 6/7/8 Plus, or iPhone X). Asset catalogs will help immensely in keeping the different asset sizes organized (and Xcode can even generate them from vector sources these days).
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RVM is not working in ZSH
...and Rails development, so I use RVM quite a bit too. The problem is that I can't seem to get RVM to work in ZSH, and it's working fine in the default Bash shell:
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Why does PostgreSQL perform sequential scan on indexed column?
...urns more than approximately 5-10% of all rows in the table, a sequential scan is much faster than an index scan.
This is because an index scan requires several IO operations for each row (look up the row in the index, then retrieve the row from the heap). Whereas a sequential scan only requires ...
getenv() vs. $_ENV in PHP
...y are exactly the same, except that getenv will look for the variable in a case-insensitive manner. Most of the time it probably doesn't matter, but one of the comments on the documentation explains:
For example on Windows $_SERVER['Path'] is like you see, with the first letter capitalized, no...
How to display hidden characters by default (ZERO WIDTH SPACE ie. ​)
I just lost part of my weekend because of this ... joker - zero width space. I just used some snippets from google groups and didn't recognize that there are doubled characters, because Idea (11) didn't show them, which was causing problems with parsing config file of my app... I discovered it accid...
DESTDIR and PREFIX of make
...z would. It's commonly used with GNU stow via
./configure --prefix=/usr/local && make && sudo make install prefix=/usr/local/stow/foo
, which would install binaries in /usr/local/stow/foo/bin. By comparison,
make install DESTDIR=/usr/local/stow/foo
would install binaries in /us...