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What does @@variable mean in Ruby?
...alue}" # 2
a = AnotherTest.new
puts "a.value is #{a.value}" # 2
a.value = 3
puts "a.value is #{a.value}" # 3
puts "t.value is #{t.value}" # 3
puts "x.value is #{x.value}" # 3
You can see that @@shared is shared between the classes; setting the value in an instance of one changes the value for all...
PostgreSQL - Rename database
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answered Sep 27 '08 at 15:03
bmdhacksbmdhacks
14.8k88 gold badges3232 silver badges5454 bronze badges
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disable maven download progress indication
...date
The documentation about batch mode see https://maven.apache.org/ref/3.6.1/maven-embedder/cli.html
Starting with Maven 3.6.1 (released 2019-04-04) you can use --no-transfer-progress will suppress the output of downloading messages at all without suppressing the other output.
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WaitAll vs WhenAll
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537
Task.WaitAll blocks the current thread until everything has completed.
Task.WhenAll returns a ...
Check if a string contains another string
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390
Use the Instr function
Dim pos As Integer
pos = InStr("find the comma, in the string", ",")
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How do I build a numpy array from a generator?
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130
Numpy arrays require their length to be set explicitly at creation time, unlike python lists. T...
How to select Python version in PyCharm?
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edited Dec 30 '14 at 21:56
Eric Leschinski
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How to un-escape a backslash-escaped string?
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139
>>> print '"Hello,\\nworld!"'.decode('string_escape')
"Hello,
world!"
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How to concatenate and minify multiple CSS and JavaScript files with Grunt.js (0.3.x)
Note: This question is only relevant for Grunt 0.3.x and has been left for reference. For help with the latest Grunt 1.x release please see my comment below this question.
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One-line list comprehension: if-else variants
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342
x if y else z is the syntax for the expression you're returning for each element. Thus you nee...