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Shell script - remove first and last quote (") from a variable
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@jsears Huh? This specifically trims one from the start if there is one, and one from the end if there is one. If you don't want to remove unless both are present; yes, a single sed regex could be used, or the variable substitution could be wrapped i...
Scala constructor overload?
...at the primary constructor is the sole point of entry to the class.
class Foo(x: Int, y: Int, z: String) {
// default y parameter to 0
def this(x: Int, z: String) = this(x, 0, z)
// default x & y parameters to 0
// calls previous auxiliary constructor which calls the primary cons...
How do I negate a test with regular expressions in a bash script?
...ate a test with Regular Expressions. For example, I would like to conditionally add a path to the PATH variable, if the path is not already there, as in:
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jQuery - Detect value change on hidden input field
...es across this thread.
Changes in value to hidden elements don't automatically fire the .change() event. So, wherever it is that you're setting that value, you also have to tell jQuery to trigger it.
function setUserID(myValue) {
$('#userid').val(myValue)
.trigger('change');...
Make .gitignore ignore everything except a few files
...han the root dir won't be found anyway. I'm using this now (with *.pl) and all *.pl files are being ignored even though there are many in the subdirectories below the .gitignore file
– PandaWood
Nov 6 '11 at 1:44
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What is Ruby's double-colon `::`?
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:: is basically a namespace resolution operator. It allows you to access items in modules, or class-level items in classes. For example, say you had this setup:
module SomeModule
module InnerModule
class MyClass
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How to escape braces (curly brackets) in a format string in .NET
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For you to output foo {1, 2, 3} you have to do something like:
string t = "1, 2, 3";
string v = String.Format(" foo {{{0}}}", t);
To output a { you use {{ and to output a } you use }}.
or Now, you can also use c# string interpolation like ...
Replacing blank values (white space) with NaN in pandas
I want to find all values in a Pandas dataframe that contain whitespace (any arbitrary amount) and replace those values with NaNs.
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Scoping in Python 'for' loops
I'm not asking about Python's scoping rules; I understand generally how scoping works in Python for loops. My question is why the design decisions were made in this way. For example (no pun intended):
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How do I use CSS in Django?
...igure out static files for the life of me. then, change django version installed, and voila. that was literally all i had to do because apparently i was looking at docs for the wrong version.
– Josh Brown
Sep 20 '13 at 3:56
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