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Difference between a Seq and a List in Scala
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A Seq is an Iterable that has a defined order of elements. Sequences provide a method apply() for indexing, ranging from 0 up to the length of the sequence. Seq has many subclasses including Queue, Range, List, Stack, and LinkedList.
A List is a Seq that is implem...
Purpose of buildscript block in Gradle
... You must use a buildScript block because Gradle needs this information in order to understand the rest of the build script. That's why you have to provide this information in a separate channel (the buildScript block). Technically speaking, Gradle needs this information in order to compile and eval...
Is there a way to automate the android sdk installation?
...able for installation you can use
$ android list sdk
and you'll obtain an ordered list of packages, for example
Packages available for installation or update: 9
1- ARM EABI v7a System Image, Android API 15, revision 2
2- Intel x86 Atom System Image, Android API 15, revision 1
3- Android Su...
Eclipse HotKey: how to switch between tabs?
...s is not exactly the right thing. This just cycles through the tabs in the order they appear on the tab bar vs. most recently switched to order.
– Hafthor
Sep 14 '12 at 18:13
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Curious null-coalescing operator custom implicit conversion behaviour
...ression Trees it turns (x ?? y) ?? z into nested lambdas, which ensures in-order evaluation without double evaluation. This is obviously not the approach taken by the C# 4.0 compiler. From what I can tell, section 6.1.4 is approached in a very strict manner in this particular code path and the tempo...
How does Go compile so quickly?
...instructions in binary form. Extra work (but not much) needs to be done in order to transform the text into binary.
The Go compiler targets only a small number of CPU architectures, while the GCC compiler targets a large number of CPUs
Compilers which were designed with the goal of high compilation ...
How can I implement a tree in Python?
...so a powerful API with:
simple tree creation
simple tree modification
pre-order tree iteration
post-order tree iteration
resolve relative and absolute node paths
walking from one node to an other.
tree rendering (see example above)
node attach/detach hookups
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How to get the number of days of difference between two dates on mysql?
...iff(DAY, '2016-04-13 11:00:01', '2016-04-14 11:00:00');
(note the opposite order of arguments compared to datediff).
Some examples:
select timestampdiff(DAY, '2016-04-13 11:00:01', '2016-04-14 11:00:00');
returns 0
select timestampdiff(DAY, '2016-04-13 11:00:00', '2016-04-14 11:00:00');
returns 1
s...
URL query parameters to dict python
...y strings, taking into account that keys can occur more than once and that order may matter.
If you are still on Python 2, urllib.parse was called urlparse.
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How do you test functions and closures for equality?
...exact purpose of freeing the compiler to break function equality freely in order to yield better optimizations.
– Alexander - Reinstate Monica
Jan 3 '19 at 4:44
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