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Clone private git repo with dockerfile

... # Install software RUN apt-get install -y git # Make ssh dir RUN mkdir /root/.ssh/ # Copy over private key, and set permissions # Warning! Anyone who gets their hands on this image will be able # to retrieve this private key file from the corresponding image layer ADD id_rsa /root/.ssh/id_rsa #...
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How to efficiently build a tree from a flat structure?

...t AssociatedObject { get; set; } } IEnumerable<Node> BuildTreeAndGetRoots(List<MyObject> actualObjects) { Dictionary<int, Node> lookup = new Dictionary<int, Node>(); actualObjects.ForEach(x => lookup.Add(x.ID, new Node { AssociatedObject = x })); foreach (var ...
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How does Java Garbage Collection work with Circular References?

... if they aren't reachable through a chain starting at a garbage collection root, so these objects will be collected. Even though objects may point to each other to form a cycle, they're still garbage if they're cut off from the root. See the section on unreachable objects in Appendix A: The Truth ...
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Android Debug Bridge (adb) device - no permissions [duplicate]

... Giving adb root access by default bothers me, especially since all devices do not need adb to as root. To make things easier you can create a bash script and run that with sudo – Leon May 10 '13 at...
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Having links relative to root?

Is there a way to have all links on a page be relative to the root directory? 6 Answers ...
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Is there a way for non-root processes to bind to “privileged” ports on Linux?

...recent kernel, it is indeed possible to use this to start a service as non-root but bind low ports. The short answer is that you do: setcap 'cap_net_bind_service=+ep' /path/to/program And then anytime program is executed thereafter it will have the CAP_NET_BIND_SERVICE capability. setcap is in th...
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What is Full Text Search vs LIKE

... MySQL creates an index from the words of the enabled full-text search column and performs searches on this index. MySQL uses a sophisticated algorithm to determine the rows matched against the search query. Also, from this S...
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Is there a REAL performance difference between INT and VARCHAR primary keys?

...e performance difference between using INT vs. VARCHAR as a primary key in MySQL? I'd like to use VARCHAR as the primary key for reference lists (think US States, Country Codes) and a coworker won't budge on the INT AUTO_INCREMENT as a primary key for all tables. ...
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How do I calculate square root in Python?

...valuate to 0. And for the record, the preferred way to calculate a square root is this: import math math.sqrt(x) share | improve this answer | follow | ...
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How to choose the id generation strategy when using JPA and Hibernate

...table. Do not use in a cluster. identity supports identity columns in DB2, MySQL, MS SQL Server, Sybase and HypersonicSQL. The returned identifier is of type long, short or int. sequence uses a sequence in DB2, PostgreSQL, Oracle, SAP DB, McKoi or a generator in Interbase. The returned identifier is...