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Why does Clojure have “keywords” in addition to “symbols”?
...c identifiers that evaluate to themselves. They provide very fast equality tests...
Symbols are identifiers that are normally used to refer to something else. They can be used in program forms to refer to function parameters, let bindings, class names and global vars...
Keywords are generally...
Gradle to execute Java class (without modifying build.gradle)
...ty passed in dynamically at command line. classpath is set to pickup the latest classes.
If you do not pass in the mainClass property, both of the approaches fail as expected.
$ gradle execute
FAILURE: Build failed with an exception.
* Where:
Build file 'xxxx/build.gradle' line: 4
* What went...
Efficiently updating database using SQLAlchemy ORM
...
Withough testing, I'd try:
for c in session.query(Stuff).all():
c.foo = c.foo+1
session.commit()
(IIRC, commit() works without flush()).
I've found that at times doing a large query and then iterating in python can be up to 2...
Android Studio IDE: Break on Exception
...
If you're using junit (debugging while unit testing), you might want to add the class filter org.junit.*
– Thomas Vincent
Jun 6 '17 at 17:40
add...
How does origin/HEAD get set?
...te set-head origin <branch>
I see no use-case for this, except for testing
unfortunately nothing is able to set HEAD on the remote
older versions of git did not know which branch HEAD points to on the remote, only which commit hash it finally has: so it just hopefully picked a branch name p...
Catch an exception thrown by an async void method
...
When you observe the traces
22:25:12.649 02172/02820 { AsyncTest.Program.Run
22:25:12.656 02172/02820 { AsyncTest.Program.DoSomeThingAsync
22:25:12.657 02172/02820 Information AsyncTest.Program.DoSomeThingAsync Hi in DoSomething 0
22:25:12.658 02172/05220 { ...
Django: How to completely uninstall a Django app?
...but looks really secure when you have to work with many deployments (like: test stage, BETA version and production - in my case)
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Can I arrange repositories into folders on Github?
.... And some of these also belong to bigger projects because they were about testing some stuff as a different application.
5...
Postgres and Indexes on Foreign Keys and Primary Keys
...determine if the benefit of an index surpasses its cost? Do I profile unit tests before/after adding an index and check for an overall performance gain? Or is there a better way?
– Gili
Nov 25 '14 at 5:00
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python: Change the scripts working directory to the script's own directory
...ns separated from each other so you can fall back to previous versions and test future versions.
Bottom line: Do not mingle code and data.
Data is precious. Code comes and goes.
Provide the working directory as a command-line argument value. You can provide a default as an environment variable....