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Why are dates calculated from January 1st, 1970?

...1st, 1970) as default standard The Question makes two false assumptions: All time-tracking in computing is done as a count-since-1970. Such tracking is standard. Two Dozen Epochs Time in computing is not always tracked from the beginning of 1970 UTC. While that epoch reference is popular, various...
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Change the Target Framework for all my projects in a Visual Studio Solution

I need to change the target framework for all projects. I have many solutions with hundreds of projects. 10 Answers ...
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When should I use ugettext_lazy?

I have a question about using ugettext and ugettext_lazy for translations. I learned that in models I should use ugettext_lazy , while in views ugettext. But are there any other places, where I should use ugettext_lazy too? What about form definitions? Are there any performance diffrences betwe...
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What generates the “text file busy” message in Unix?

...table while it was running. For example, I was building a make workalike called rmk, and after a while it was self-maintaining. I would run the development version and have it build a new version. To get it to work, it was necessary to use the workaround: gcc -g -Wall -o rmk1 main.o -L. -lrmk -L...
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In Python, using argparse, allow only positive integers

...still need to define an actual method that decides this for you: def check_positive(value): ivalue = int(value) if ivalue <= 0: raise argparse.ArgumentTypeError("%s is an invalid positive int value" % value) return ivalue parser = argparse.ArgumentParser(...) parser.add_argu...
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Where is JAVA_HOME on macOS Mojave (10.14) to Lion (10.7)?

... With the Java optional package or Oracle JDK installed, adding one of the following lines to your ~/.bash_profile file will set the environment variable accordingly. export JAVA_HOME="$(/usr/libexec/java_home -v 1.6)" or export JAVA_HOME="$(/usr/libexec/java_home -v 1.7)...
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Django DB Settings 'Improperly Configured' Error

...--settings=mysite.settings (or whatever settings module you use) Set DJANGO_SETTINGS_MODULE environment variable in your OS to mysite.settings (This is removed in Django 1.6) Use setup_environ in the python interpreter: from django.core.management import setup_environ from mysite import settings s...
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Javascript - Open a given URL in a new tab by clicking a button

... +1, if something opens a page in new tab, it is logically a link, so <a> tag is appropriate. Styles should be used to make it look like a button. – Kos May 9 '18 at 6:41 ...
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Forward function declarations in a Bash or a Shell script?

... This seems somewhat analogous to what if _ _ name _ _ == "_ _ main _ _": main() does in python – Sergiy Kolodyazhnyy Feb 13 '16 at 7:13 ...
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Creating a daemon in Linux

...where it was started + a newline. Daemons work in the background and (usually...) don't belong to a TTY that's why you can't use stdout/stderr in the way you probably want. Usually a syslog daemon (syslogd) is used for logging messages to files (debug, error,...). Besides that, there are a few re...