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Java: when to use static methods
...and it shouldn't, since your project's special characters may be different from the other project's), and you can't add it (since Java is somewhat sane), so you create an utility class, and call removeSpecialChars(s) instead of s.removeSpecialChars(). Sweet.
Purity: taking some precautions, your sta...
How should strace be used?
...codes for you, e.g. -EFAULT (oops, read-only buffer) or -ENOENT (oops, ran from the wrong directory where the relative path didn't work).)
– Peter Cordes
Apr 9 '19 at 6:50
add...
How to compare two Dates without the time portion?
...Joda Time was a fine recommendation at the time, use the java.time library from Java 8+ instead where possible.
My preference is to use Joda Time which makes this incredibly easy:
DateTime first = ...;
DateTime second = ...;
LocalDate firstDate = first.toLocalDate();
LocalDate secondDate = seco...
What is the purpose of Rank2Types?
...System F directly, because Haskell is designed to hide the details of that from you in the interest of simplicity.
But basically, the rough idea is that polymorphic types don't really have the a -> b form that they do in Haskell; in reality, they look like this, always with explicit quantifiers:...
When would you use a WeakHashMap or a WeakReference?
...ork on.
Naturally you want to cache these
images, because loading them from disk
is very expensive and you want to
avoid the possibility of having two
copies of the (potentially gigantic)
image in memory at once.
Because an image cache is supposed to
prevent us from reloading imag...
Why use pointers? [closed]
...either easy-enough. References are no silver bullet protecting an engineer from shooting himself in the foot. See it live.
– WhozCraig
Sep 9 '13 at 18:14
...
.gitignore and “The following untracked working tree files would be overwritten by checkout”
...they need to be removed with git rm --cached. The --cached will prevent it from having any effect on your working copy and it will just mark as removed the next time you commit. After the files are removed from the repo then the .gitignore will prevent them from being added again.
But you have anot...
Set time to 00:00:00
...t cannot represent a moment as it lacks any concept of time zone or offset-from-UTC. Calling LocalDateTime.now almost never makes sense. Use ZonedDateTime instead. Otherwise you are ignoring crucial time zone issues. For one thing, some dates in some zones do not start at 00:00!
...
Finding the max value of an attribute in an array of objects
...Note that this returns the object that had the max value not the max value from the object. This may or may not be what you want. In my case it was what I wanted. +1
– John
Nov 24 '17 at 23:46
...
What are the relationships between Any, AnyVal, AnyRef, Object and how do they map when used in Java
...ition to objects, there are primitives. All objects in Java are descendant from java.lang.Object, but primitives are set apart and, presently*, not extensible by a programmer. Note also that primitives have "operators", not methods.
In Scala, on the other hand, everything is an object, all objects ...