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Clojure: cons (seq) vs. conj (list)
...nj means to conj(oin an item onto a collection). The seq being constructed by cons starts with the element passed as its first argument and has as its next / rest part the thing resulting from the application of seq to the second argument; as displayed above, the whole thing is of class clojure.lang...
Animate element to auto height with jQuery
...
You can prevent the FOUC ("flash of unstyled content") by initially giving the element opacity: 0; position: absolute; while measuring it and removing those once you're done.
– JacobEvelyn
Apr 14 '16 at 14:59
...
Disable Maven warning message - “Selected war files include a WEB-INF/web.xml which will be ignored”
...ing build configuration (i believe perhaps web.xml is added to the project by other means, and should't be packaged by default):
<project>
...
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
...
What effect(s) can the virtual keyword have in Entity Framework 4.1 POCO Code First?
...ing requirements then your change tracking can use a more efficient method by hooking your virtual properties. From the link:
To get change tracking proxies, the
basic rule is that your class must be
public, non-abstract or non-sealed.
Your class must also implement public
virtual gette...
Check if a Postgres JSON array contains a string
...rom t where x @> '2';. Note that '2' is a JSON number; don't be mislead by the quotes.
– Snowball
Nov 16 '18 at 4:26
...
Java volatile reference vs. AtomicReference
...et has the memory effects of writing (assigning) a volatile variable.
By the way, that documentation is very good and everything is explained.
AtomicReference::lazySet is a newer (Java 6+) operation introduced that has semantics unachievable through volatile variables. See this post for more...
Maximum value for long integer
...erence (Python 2.x):
sys.maxint The largest positive integer supported by Python’s regular
integer type. This is at least 2**31-1. The largest negative integer
is -maxint-1 — the asymmetry results from the use of 2’s complement
binary arithmetic.
sys.maxsize The largest positive...
Specifying rails version to use when creating a new application
...
This is RubyGems functionality, not Rails functionality; it's therefore not dependent on Rails version, and will work for other gems. (Thanks, this is a great answer!)
– Calrion
Sep 3 '11 at 1:02
...
Error pushing to GitHub - insufficient permission for adding an object to repository database
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This will allow any new files created by another user to maintain the group permissions of the root directory. Otherwise, you'll have errors pushing up to the repository. See setuid and setgid
– syvex
Jul 7 '11 at 17:05
...
Underscore prefix for property and method names in JavaScript
...ships with this support.
_ prefixed variable names are considered private by convention but are still public.
This syntax tries to be both terse and intuitive, although it's rather different from other programming languages.
Why was the sigil # chosen, among all the Unicode code points?
...