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How do HashTables deal with collisions?
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Hash tables deal with collisions in one of two ways.
Option 1: By having each bucket contain a linked list of elements that are hashed to that bucket. This is why a bad hash function can make lookups in hash tables very slow.
Option 2: If the hash table entr...
SVN checkout ignore folder
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This is what we ended up doing to skip some pre-built components in a previous job.
– Mark Bessey
Oct 10 '08 at 21:02
2
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Proper MIME media type for PDF files
...on defined in RFC 2045 - Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies.
Private [subtype] values (starting with "X-") may be defined
bilaterally between two cooperating agents without
outside registration or standardization. Such values
cannot ...
Java null check why use == instead of .equals()
In Java I am told that when doing a null check one should use == instead of .equals(). What are the reasons for this?
16 An...
Difference between git checkout --track origin/branch and git checkout -b branch origin/branch
...emote>/<branch>
If the branch exists in multiple remotes and one of them is named by the checkout.defaultRemote configuration variable, we'll use that one for the purposes of disambiguation, even if the <branch> isn't unique across all remotes.
Set it to e.g. checkout.defaultRe...
Best way to reverse a string
...Console.WriteLine(r);
}
}
(And live running example here: https://ideone.com/DqAeMJ)
It simply uses the .NET API for grapheme cluster iteration, which has been there since ever, but a bit "hidden" from view, it seems.
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How to pipe list of files returned by find command to cat to view all the files
...(cat {} in this case); the \; is to end the -exec command.)
send output of one process as command line arguments to another process
command2 `command1`
for example:
cat `find . -name '*.foo' -print`
(Note these are BACK-QUOTES not regular quotes (under the tilde ~ on my keyboard).)
This will s...
Explicitly set Id with Doctrine when using “AUTO” strategy
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will this set this generator permanently? Can I add one record with forced ID and then let it use autoincrement ids?
– Pavel Dubinin
Jun 25 '14 at 5:38
1
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generate days from date range
... construct a resultset using UNIONs, why not just specify the date and be done with it?
– OMG Ponies
Jan 28 '10 at 21:27
7
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Log to the base 2 in python
... @wap26: Above, I'm using the IPython interactive interpreter. One of its features (accessed with the ?) is dynamic object introspection.
– unutbu
Apr 30 '13 at 17:51
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