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What's an elegant way to conditionally add a class to an HTML element in a view?
...c record ID, and failure with boolean false or nil. This way you can just test your variable:
<div class="<%= 'ok' if @success %>">
A second form using the ternary ?: operator is useful if you want to choose between two classes:
<div class="<%= @success ? 'good' : 'bad' %>"...
Example of Named Pipes
How do I write a simple--bare minimum needed for it to work--test application that illustrates how to use IPC/Named Pipes?
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How to implement my very own URI scheme on Android
... a concept, in a closed environment. Should this experiment ever leave its testing phase, I'll definitely consider ratifying the whole deal.
– punnie
Mar 16 '10 at 16:16
5
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Android: How can I get the current foreground activity (from a service)?
...w is an activity by calling PackageManager.getActivityInfo().
Benefits
Tested and working in Android 2.2 (API 8) through Android 7.1 (API 25).
Doesn't require polling.
Doesn't require the GET_TASKS permission.
Disadvantages
Each user must enable the service in Android's accessibility setting...
What is a “surrogate pair” in Java?
...
Adding some more info to the above answers from this post.
Tested in Java-12, should work in all Java versions above 5.
As mentioned here: https://stackoverflow.com/a/47505451/2987755,
whichever character (whose Unicode is above U+FFFF) is represented as a surrogate pair, which Java...
How can I install pip on Windows?
...do any of this, I just followed the instructions on pip-installer.org/en/latest/installing.html (basically you just write "python ez_setup.py" and then "python get-pip.py")
– CaptainCodeman
Nov 10 '13 at 19:50
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Is it possible to for SQL Output clause to return a column not being inserted?
...th the source and destination tables.
Here is the entire code I used to test it:
CREATE TABLE ReportOption (ReportOptionID INT IDENTITY(1, 1), Field1 INT, Field2 INT)
CREATE TABLE Practice (PracticeID INT IDENTITY(1, 1), Field1 INT, Field2 INT)
CREATE TABLE PracticeReportOption (PracticeReportOp...
AngularJS : How to watch service variables?
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Good question. I honestly don't know. I'll try to do some tests on how could you remove notify callback from promise.
– Krym
Jan 23 '15 at 14:22
add a comment...
Effects of the extern keyword on C functions
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I just tested it in gcc and it's both "extern int h();static int h() {return 0;}" and "int h();static int h() {return 0;}" are accepted with the same warning. Is it C99 only and not ANSI? Can you refer me to the exact section in the...
What does “#define _GNU_SOURCE” imply?
...he POSIX definitions take precedence.
From the Linux man page on feature test macros:
_GNU_SOURCE
Defining this macro (with any value) implicitly defines
_ATFILE_SOURCE, _LARGEFILE64_SOURCE, _ISOC99_SOURCE,
_XOPEN_SOURCE_EXTENDED, _POSIX_SOURCE, _POSIX_C_...