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Tick symbol in HTML/XHTML
...splay a tick symbol (✓ or ✔) within an internal web app and would ideally like to avoid using an image.
14 Answers
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How do you check if a variable is an array in JavaScript? [duplicate]
...structor === Array
This is the fastest method on Chrome, and most likely all other browsers. All arrays are objects, so checking the constructor property is a fast process for JavaScript engines.
If you are having issues with finding out if an objects property is an array, you must first check if...
Nokogiri installation fails -libxml2 is missing
I always worked my way around Nokogiri installation issues by following the documentation in the " Installing Nokogiri " tutorial.
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Prevent the keyboard from displaying on activity start
...g both in code, and in xml! Indeed, this is the most correct answer! Especially since it was probably that 3 minutes you spent writing both methods that made you not first ;-)
– eric
Apr 21 '17 at 1:13
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Emacs bulk indent for Python
...enter 8 spaces.
PS. With Ubuntu, to make python-mode the default mode for all .py files, simply install the python-mode package.
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How to convert an Int to a String of a given length with leading zeros to align?
...Local(java.util.Locale.US, 123)
res6: String = 0000123
Edit post Scala 2.10: as suggested by fommil, from 2.10 on, there is also a formatting string interpolator (does not support localisation):
val expr = 123
f"$expr%07d"
f"${expr}%07d"
Edit Apr 2019:
If you want leading spaces, and not zero...
R cannot be resolved - Android error
I just downloaded and installed the new Android SDK. I wanted to create a simple application to test drive it.
108 Answers
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How do I programmatically determine operating system in Java?
...e operating system of the host that my Java program is running programmatically (for example: I would like to be able to load different properties based on whether I am on a Windows or Unix platform). What is the safest way to do this with 100% reliability?
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Dilemma: when to use Fragments vs Activities:
.... In the beginning this will not have any sense, but in time, you will actually be able to tell if you need Fragment or not.
There is a good practice I found very helpful for me. It occurred to me while I was trying to explain something to my daughter.
Namely, imagine a box which represents a sc...
Is there a way to use shell_exec without waiting for the command to complete?
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