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Elegant way to check for missing packages and install them?
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Yes. If you have your list of packages, compare it to the output from installed.packages()[,"Package"] and install the missing packages. Something like this:
list.of.packages <- c("ggplot2", "Rcpp")
new.packages <- list.of.packages[!(list.of.packages %in% installed.packages(...
How do I update each dependency in package.json to the latest version?
...g changes in your dependencies before upgrading.
To see which modules are outdated, just run npm outdated. It will list any installed dependencies that have newer versions available.
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What are the most common SQL anti-patterns? [closed]
...process partly characterized by learning unfamiliar paradigms, and finding out that some of our most familiar programming patterns don't work here. What are the common antipatterns you've seen (or yourself committed)?
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Can I use conditional statements with EJS templates (in JMVC)?
...t; appears to error. Is there a method similar or is it necessary to break out the include by <% %>.
– kuanb
Sep 12 '16 at 21:48
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SQL query return data from multiple tables
...kipedia entry for additional info)
How to use a union query
Left and Right Outer Joins (this stackOverflow answer is excellent to describe types of joins)
Intersect queries (and how to reproduce them if your database doesn't support them) - this is a function of SQL-Server (see info) and part of the...
Why should I prefer to use member initialization lists?
... of construction, base class should be constructed before child class. Without constructor initializer list, this is possible if your base class has default constructor which will be called just before entering the constructor of child class.
But, if your base class has only parameterized construct...
How do I add a simple jQuery script to WordPress?
I read the Codex and a few blog posts about using jQuery in WordPress, and its very frustrating. I've got as far as loading jQuery in functions.php file, but all of the guides out there are crappy because they assume you already have a ton of WordPress experience. For instance, they say that now t...
Why are dates calculated from January 1st, 1970?
...Doesn't count leap seconds? I did not know that detail. After thinking about it for a few moments, I can see why you'd do it that way, but man. my world is shattered. by 24 seconds.
– keturn
Mar 28 '10 at 19:08
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Importing a CSV file into a sqlite3 database table using Python
... I tried this method, but it doesn't work for me. Could you check out my datasets here (they are very normal, except some columns have empty values) and try importing them with your code? stackoverflow.com/questions/46042623/…
– user177196
Sep 4 '17 ...
How accurate is python's time.sleep()?
...ime OS's like a stock Windows the smallest interval you can sleep for is about 10-13ms. I have seen accurate sleeps within several milliseconds of that time when above the minimum 10-13ms.
Update:
Like mentioned in the docs cited below, it's common to do the sleep in a loop that will make sure to ...