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How do I detect the Python version at runtime? [duplicate]
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Here, sys.version_info[0] is the major version number. sys.version_info[1] would give you the minor version number.
In Python 2.7 and later, the components of sys.version_info can also be accessed by name, so the major version number is sys.version_info.major.
See also How can I check for Pytho...
How can you determine how much disk space a particular MySQL table is taking up?
...table_name='mytable';
KILOBYTES
SELECT (data_length+index_length)/power(1024,1) tablesize_kb
FROM information_schema.tables
WHERE table_schema='mydb' and table_name='mytable';
MEGABYTES
SELECT (data_length+index_length)/power(1024,2) tablesize_mb
FROM information_schema.tables
WHERE table_sche...
How to write a cron that will run a script every day at midnight?
...mm hh dd mt wd command
mm minute 0-59
hh hour 0-23
dd day of month 1-31
mt month 1-12
wd day of week 0-7 (Sunday = 0 or 7)
command: what you want to run
all numeric values can be replaced by * which means all
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What does curly brackets in the `var { … } = …` statements do?
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They're both JavaScript 1.7 features. The first one is block-level variables:
let allows you to declare variables, limiting its scope to the block, statement, or expression on which it is used. This is unlike the var keyword, which defines a var...
How do I create a dictionary with keys from a list and values defaulting to (say) zero? [duplicate]
I have a = [1,2,3,4] and I want d = {1:0, 2:0, 3:0, 4:0}
5 Answers
5
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Android Gradle plugin 0.7.0: “duplicate files during packaging of APK”
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As of Android Studio version 0.8.14
You should add:
android {
packagingOptions {
exclude 'META-INF/LICENSE.txt'
exclude 'META-INF/NOTICE.txt'
exclude '...'
}
}
to your build.gradle file.
History:
According to c...
Where does Scala look for implicits?
...ince then with feedback and updates.
The implicits available under number 1 below has precedence over the ones under number 2. Other than that, if there are several eligible arguments which match the implicit parameter’s type, a most specific one will be chosen using the rules of static overloadi...
Why are Python lambdas useful? [closed]
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1016
Are you talking about lambda functions? Like
lambda x: x**2 + 2*x - 5
Those things are act...
Does Java 8 provide a good way to repeat a value or function?
...lue or function multiple times, eg. to get a list of 8 copies of the value 1:
5 Answers
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(How) can I count the items in an enum?
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123
There's not really a good way to do this, usually you see an extra item in the enum, i.e.
enu...