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Postgresql GROUP_CONCAT equivalent?
...starting point (version 8.4+ only):
SELECT id_field, array_agg(value_field1), array_agg(value_field2)
FROM data_table
GROUP BY id_field
array_agg returns an array, but you can CAST that to text and edit as needed (see clarifications, below).
Prior to version 8.4, you have to define it yourself p...
Browsing Folders in MSYS
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154
cd /c/ to access C:
cd /d/ for D:
etc.
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How do you get a Golang program to print the line number of the error it just called?
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122
You can set the Flags on either a custom Logger, or the default to include Llongfile or Lshort...
Chrome extension: force popup.html to close
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JavaScript style for optional callbacks
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img src SVG changing the styles with CSS
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Typescript: difference between String and string
...le that shows the differences, which will help with the explanation.
var s1 = new String("Avoid newing things where possible");
var s2 = "A string, in TypeScript of type 'string'";
var s3: string;
String is the JavaScript String type, which you could use to create new strings. Nobody does this as...
Why in Java 8 split sometimes removes empty strings at start of result array?
...d Java 8. The code is retrieved from grepcode, for version 7u40-b43 and 8-b132.
Java 7
public String[] split(CharSequence input, int limit) {
int index = 0;
boolean matchLimited = limit > 0;
ArrayList<String> matchList = new ArrayList<>();
Matcher m = matcher(input);...
Storing a Map using JPA
....6 - Collections of Embeddable Classes and Basic Types
2.7 Map Collections
10.1.11 - ElementCollection Annotation
11.1.29 MapKeyColumn Annotation
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How do you tell if a string contains another string in POSIX sh?
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