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Can someone explain in simple terms to me what a directed acyclic graph is?
...execution time, you can calculate the maximum execution time of the entire set
among many other things.
Outside the realm of application programming, any decent automated build tool (make, ant, scons, etc.) will use DAGs to ensure proper build order of the components of a program.
...
Format a date using the new date time API
...y, namely to allow different temporal types which consist of type-specific sets of supported built-in fields. The natural consequence is that not every possible field is supported by every type (and users can even define their own specialized fields). It is also possible to programmatically ask ever...
Difference between DateTime and Time in Ruby
... the OS needs to support leap seconds and timezone information needs to be set correctly, e.g. through TZ=right/UTC irb (on many Unix systems).
Second, DateTime has very limited understanding of time zones and in particular has no concept of daylight savings. It pretty much handles time zones as si...
How to log SQL statements in Grails
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Setting
datasource {
...
logSql = true
}
in DataSource.groovy (as per these instructions) was enough to get it working in my environment. It seems that parts of the FAQ are out of date (e.g. "the many-to-many columns backw...
How do I prevent 'git diff' from using a pager?
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Usage:
git --no-pager diff
Other options from the comments include:
# Set an evaporating environment variable to use 'cat' for your pager
GIT_PAGER=cat git diff
# Tells 'less' not to paginate if less than a page
export LESS="-F -X $LESS"
# ...then Git as usual
git diff
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What do (lambda) function closures capture?
...recommended by Adrien Plisson. Create a lambda with an extra argument, and set the extra argument's default value to the object you want preserved.
A little more verbose but less hacky would be to create a new scope each time you create the lambda:
>>> adders = [0,1,2,3]
>>> for i...
Python: How would you save a simple settings/config file?
...onfigParser()
config.read('config.ini')
config.add_section('main')
config.set('main', 'key1', 'value1')
config.set('main', 'key2', 'value2')
config.set('main', 'key3', 'value3')
with open('config.ini', 'w') as f:
config.write(f)
The file format is very simple with sections marked out in squa...
Set the value of a variable with the result of a command in a Windows batch file
When working in a Bash environment, to set the value of a variable as the result of a command, I usually do:
5 Answers
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Eclipse error “ADB server didn't ACK, failed to start daemon”
...Android SDK.
The easiest way to fix seems to be to update your Genymotion Settings so it uses the same ADB as your Android SDK:
Just check the "Use custom Android SDK tools" option and enter your desired location.
share
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Using Enums while parsing JSON with GSON
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From the documentation for Gson:
Gson provides default serialization and deserialization for Enums... If you would prefer to change the default representation, you can do so by registering a type adapter through GsonBuild...