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Why does Haskell's “do nothing” function, id, consume tons of memory?
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This means that if id is repeated n times, the space of its type is proportional to 2^n. The type inferred in Ryan's code would need 2^27 references to its type variable in addition to the other structure needed to represent the type, which ...
How to jump to a specific character in vim?
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If you do a search for that character with /, you can then hit n to move to the next occurrence of it.
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How to assertThat something is null with Hamcrest?
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If you want to hamcrest, you can do
import static org.hamcrest.Matchers.nullValue;
assertThat(attr.getValue(), is(nullValue()));
In Junit you can do
import static junit.framework.Assert.assertNull;
assertNull(object);
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How to select .NET 4.5.2 as a target framework in Visual Studio
...web installer. The latter will not install the multi-targeting pack--even if you have Visual Studio 2013 installed.
– osoviejo
May 20 '14 at 7:23
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Python/postgres/psycopg2: getting ID of row just inserted
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Just to clarify, the id in RETURNING id should be the field name of the serial / primary key field.
– joshden
Feb 6 '16 at 20:56
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Getting current unixtimestamp using Moment.js
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@climbinghobo if you want in milliseconds use moment().valueOf()
– Gaurav Bharti
Mar 14 '18 at 12:36
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Breaking loop when “warnings()” appear in R
...e files. My matrices are enormous and therefore I often run out of memory if I am not careful.
3 Answers
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How to create major and minor gridlines with different linestyles in Python
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From the docs: "If kwargs are supplied, it is assumed that you want a grid and b is thus set to True." - so you might omit b=True.
– miku
Oct 30 '17 at 20:11
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Gradle build only one module
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To execute a task of a specific subproject, specify its task path. For example:
gradle :ABC:build
The leading : stands for the root project. ABC is the subproject, and build a task in that project.
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What is a 'SAM type' in Java?
...ort(people, Person::compareByAge);
This creates a Comparator using a specific method that doesn't share the same name as Comparator.compare, that way you don't have to follow the interface naming of methods and you can have multiple comparison overrides in a class, then create the comparators on t...