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How to use RSpec's should_raise with any kind of exception?
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380
expect { some_method }.to raise_error
RSpec 1 Syntax:
lambda { some_method }.should raise_err...
How to import existing *.sql files in PostgreSQL 8.4?
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edited Aug 3 '10 at 6:38
answered Aug 3 '10 at 6:16
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What is the difference between JavaConverters and JavaConversions in Scala?
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EDIT: Java Conversions got @deprecated in Scala 2.13.0. Use scala.jdk.CollectionConverters instead.
JavaConversions provide a series of implicit methods that convert between a Java collection and the closest corresponding Scala collection, and vice versa. This is done by creat...
JPA: How to have one-to-many relation of the same Entity type
... the relationship is the same. The general case is detailed in Section 2.10.2 of the JPA 2.0 spec.
Here's a worked example. First, the entity class A:
@Entity
public class A implements Serializable {
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
private Long id;
@ManyToOne
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Position icons into circle
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2020 solution
Here's a more modern solution I use these days.
I start off by generating the HTML starting from an array of images. Whether the HTML is generated using PHP, JS, some HTML preprocessor, whatever... this matters l...
When do I use fabs and when is it sufficient to use std::abs?
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answered Jun 25 '10 at 13:06
Mike SeymourMike Seymour
230k2424 gold badges396396 silver badges602602 bronze badges
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Execute AsyncTask several times
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edited Jun 20 at 9:12
Community♦
111 silver badge
answered Jun 16 '11 at 14:49
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Split comma-separated strings in a column into separate rows
...ckage (see code below).
The sample data given by the OP consists only of 20 rows. To create larger data frames, these 20 rows are simply repeated 1, 10, 100, 1000, 10000, and 100000 times which give problem sizes of up to 2 million rows.
Benchmark results
The benchmark results show that for su...
Re-entrant locks in C#
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150
No, not as long as you are locking on the same object. The recursive code effectively already h...
Authorize Attribute with Multiple Roles
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answered Jun 12 '14 at 10:39
MacGyverMacGyver
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