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Find the number of columns in a table
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205
SELECT COUNT(*)
FROM INFORMATION_SCHEMA.COLUMNS
WHERE table_catalog = 'database_name' -- th...
Traverse a list in reverse order in Python
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26 Answers
26
Active
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Creating an empty file in C#
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edited Apr 29 '09 at 14:36
answered Apr 29 '09 at 14:23
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Can I make 'git diff' only the line numbers AND changed file names?
...*) echo "I don't know what to do, help!"; exit 1;;
esac
path=$1
old_file=$2
old_hex=$3
old_mode=$4
new_file=$5
new_hex=$6
new_mode=$7
printf '%s: ' $path
diff $old_file $new_file | grep -v '^[<>-]'
For details on "external diff" see the description of GIT_EXTERNAL_DIFF in the git manual pa...
Get the latest record from mongodb collection
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142
This is a rehash of the previous answer but it's more likely to work on different mongodb versio...
LINQ: Not Any vs All Don't
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answered Jan 27 '12 at 0:52
Jon HannaJon Hanna
99.7k99 gold badges128128 silver badges227227 bronze badges
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how to exclude null values in array_agg like in string_agg using postgres?
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28
SQL Fiddle
select
id,
(select array_agg(a) from unnest(canonical_users) a where a is n...
Firing a double click event from a WPF ListView item using MVVM
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answered Oct 2 '09 at 16:25
jbejbe
6,66211 gold badge3939 silver badges3232 bronze badges
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Should I use string.isEmpty() or “”.equals(string)?
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251
The main benefit of "".equals(s) is you don't need the null check (equals will check its argum...
Do interfaces inherit from Object class in java
...ace).
This is explained in detail in the Java Language Specification, § 9.2 Interface Members.
9.2 Interface Members
[...]
If an interface has no direct superinterfaces, then the interface implicitly declares a public abstract member method m with signature s, return type r, and throws clause t c...