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How to succinctly write a formula with many variables from a data frame?
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@gratur One reason is that things like foo(bar <- 1:10) work (and bar is created) but foo(bar = 1:10) would either fail because bar is not an argument of foo and won't create bar either.
– Gavin Simpson
Mar 25 '13 at 16:02...
How to change Git log date formats
I am trying to display the last commit within Git, but I need the date in a special format.
12 Answers
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Is #pragma once a safe include guard?
...is the extra requirement that you must define a new symbol such as #ifndef FOO_BAR_H, normally for a file such as "foo_bar.h". If you later rename this file, should you adjust the include guards accordingly to be consistent with this convention? Also, if you have two distinct foo_bar.h's in two diff...
How do I use Assert.Throws to assert the type of the exception?
... is correct:
var ex = Assert.Throws<ArgumentNullException>(() => foo.Bar(null));
Assert.That(ex.ParamName, Is.EqualTo("bar"));
You can also use the fluent API for doing these asserts:
Assert.That(() => foo.Bar(null),
Throws.Exception
.TypeOf<ArgumentNullException>()
.With....
How to strip all non-alphabetic characters from string in SQL Server?
How could you remove all characters that are not alphabetic from a string?
18 Answers
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View's getWidth() and getHeight() returns 0
I am creating all of the elements in my android project dynamically. I am trying to get the width and height of a button so that I can rotate that button around. I am just trying to learn how to work with the android language. However, it returns 0.
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Python, remove all non-alphabet chars from string
I am writing a python MapReduce word count program. Problem is that there are many non-alphabet chars strewn about in the data, I have found this post Stripping everything but alphanumeric chars from a string in Python which shows a nice solution using regex, but I am not sure how to implement it
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Using pre-compiled headers with CMake
... aware though that the argument to /Yu is taken very literally. E.g. /YuC:/foo/bar.h will force you to either pass the /FpC:/foo/bar.h flag or put #include <C:/foo/bar.h> at the top of all of your .cpp files as the first include statement. MSVC does a string compare of the #include arguments, ...
Converting any string into camel case
...f anyone is using lodash, there is a _.camelCase() function.
_.camelCase('Foo Bar');
// → 'fooBar'
_.camelCase('--foo-bar--');
// → 'fooBar'
_.camelCase('__FOO_BAR__');
// → 'fooBar'
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How To Set Up GUI On Amazon EC2 Ubuntu server
I'm using an amazon Ubuntu EC2 instance which is only has a command line interface. I want to setup UI for that server to access using remote desktop tools. Is there any way to apply GUI to the EC2 instance?
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