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How to compare objects by multiple fields
...With Java 8:
Comparator.comparing((Person p)->p.firstName)
.thenComparing(p->p.lastName)
.thenComparingInt(p->p.age);
If you have accessor methods:
Comparator.comparing(Person::getFirstName)
.thenComparing(Person::getLastName)
.thenComparingInt(P...
What is thread safe or non-thread safe in PHP?
... So we configure the web server to forward requests to PHP for processing, then receive the result and send it back to the user. There are multiple ways to chain the web server with PHP. For Apache HTTP Server, the most popular is "mod_php". This module is actually PHP itself, but compiled as a modu...
Delete all tags from a Git repository
...l tags) simply do:
git tag -l | xargs -n 1 git push --delete origin
and then delete the local copies:
git tag | xargs git tag -d
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How does the Brainfuck Hello World actually work?
...(giving
a[1]=70 etc.). After the loop is finished, a[0] is zero. >++. then
moves the pointer to a[1], which holds 70, adds two to it (producing
72, which is the ASCII character code of a capital H), and outputs it.
The next line moves the array pointer to a[2] and adds one to it,
pro...
Callback to a Fragment from a DialogFragment
...super helpful to show a dialog picked value being added to the Intent, and then read inside your onActivityResult. Intents are unclear to beginners.
– Chris Betti
Feb 17 '14 at 18:35
...
Should I implement __ne__ in terms of __eq__ in Python?
...re the other operand) implicitly delegating to __eq__ from the other side, then inverting it. For weird types, e.g. the SQLAlchemy ORM's fields, this causes problems.
– ShadowRanger
Mar 18 '19 at 18:16
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bower command not found windows
... 1 to your Path.
Open the Windows Control Panel, search for environment, then click on either edit environment variables for your account, or Edit the system environment variables`.
Find the variable named Path or PATH, or create one if it doesn't exist.
Paste the path from step 1 here (; delimit...
How to implement a Map with multiple keys? [duplicate]
...rary number of keys, have a method like getByKey(MetaKey mk, Object k) and then a Map<MetaKey, Map<Object, V>> internally.
– Jeremy Huiskamp
May 4 '09 at 22:21
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Abandoning changes without deleting from history
...ur repository to the head with the revision that you want to forget about, then use hg commit --close-branch to mark that (anonymous) branch as closed. Then update to the head of the branch that you do want, and continue working.
You can still see the closed branch if you use the -c option to hg h...
Most efficient way to create a zero filled JavaScript array?
...bly slow. Now, for array lengths smaller.. say < 50 or there abouts... then new Array() does seem to perform better. But..
– Pimp Trizkit
Sep 23 '15 at 0:07
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