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Why doesn't Dictionary have AddRange?
...doesn't have any meaning to an associative container, as the range of data allows for duplicate entries. E.g if you had an IEnumerable<KeyValuePair<K,T>> that collection does not guard against duplicate entries.
The behavior of adding a collection of key-value pairs, or even merging tw...
How to handle exceptions in a list comprehensions?
...n alternate values &c in case of exceptions), so it's impossible, literally speaking, to "handle exceptions in a list comprehension" because a list comprehension is an expression containing other expression, nothing more (i.e., no statements, and only statements can catch/ignore/handle exception...
Checkout another branch when there are uncommitted changes on the current branch
...st of the time when I try to checkout another existing branch, Git doesn't allow me if I have some uncommitted changes on the current branch. So I'll have to commit or stash those changes first.
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Understanding the Gemfile.lock file
After running the bundle install command, 'Gemfile.lock ' is created in the working directory. What do the directives inside that file mean?
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Haskell, Lisp, and verbosity [closed]
...y general that it never gets in your way, and somewhat surprisingly it actually "aids in achieving agility" (as you said) because when your program compiles you can be almost certain that is correct, so this certainty lets you try out things you might be otherwise afraid to try -- there is a "dynami...
time.sleep — sleeps thread or process?
...look in Modules/timemodule.c in the Python source, you'll see that in the call to floatsleep(), the substantive part of the sleep operation is wrapped in a Py_BEGIN_ALLOW_THREADS and Py_END_ALLOW_THREADS block, allowing other threads to continue to execute while the current one sleeps. You can also...
How to concatenate multiple lines of output to one line?
...t file | grep pattern , I get many lines of output. How do you concatenate all lines into one line, effectively replacing each "\n" with "\" " (end with " followed by space)?
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How do you force a makefile to rebuild a target
I have a makefile that builds and then calls another makefile. Since this makefile calls more makefiles that does the work it doesnt really change. Thus it keeps thinking the project is built and upto date.
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How to take column-slices of dataframe in pandas
...th the following columns:
foo, bar, quz, ant, cat, sat, dat.
# selects all rows and all columns beginning at 'foo' up to and including 'sat'
df.loc[:, 'foo':'sat']
# foo bar quz ant cat sat
.loc accepts the same slice notation that Python lists do for both row and columns. Slice notation being...
How can I see what has changed in a file before committing to git?
...diff works recursively on directories, and if no paths are given, it shows all changes.
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