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When do we need curly braces around shell variables?
In shell scripts, when do we use {} when expanding variables?
7 Answers
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Get day of week in SQL Server 2005/2008
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finding this answer today, and it creeps me out that the sample result on your answer matches mine, then found out that days on july 2009 is the same as days today (july 2020), anyways thanks for the easy answer.
– Henry
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Android Json and null values
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Try with json.isNull( "field-name" ).
Reference: http://developer.android.com/reference/org/json/JSONObject.html#isNull%28java.lang.String%29
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How to replace DOM element in place using Javascript?
...you @Bjorn Tipling. I've created a follow up question on how to add an id and a function to the replaced element, here: stackoverflow.com/questions/15670261/…
– JDelage
Mar 27 '13 at 21:58
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Safely limiting Ansible playbooks to a single machine?
...all group of computers. Currently, I have my playbooks set to hosts: all and my hosts file is just a single group with all machines listed:
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How do I remove packages installed with Python's easy_install?
...sn't implement the other common features of a dependency manager - listing and removing installed packages.
13 Answers
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How to keep a Python script output window open?
...a few options:
Run the program from an already-open terminal. Open a command prompt and type:
python myscript.py
For that to work you need the python executable in your path. Just check on how to edit environment variables on Windows, and add C:\PYTHON26 (or whatever directory you installed pyt...
What does static_assert do, and what would you use it for?
...n example where static_assert(...) ('C++11') would solve the problem in hand elegantly?
8 Answers
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How do I output an ISO 8601 formatted string in JavaScript?
... best solution I've come across is to use the Moment.js javascript library and use the following code:
To get the current ISO time with timezone information and milliseconds
now = moment().format("YYYY-MM-DDTHH:mm:ss.SSSZZ")
// "2013-03-08T20:11:11.234+0100"
now = moment().utc().format("YYYY-MM-D...
How to get child element by class name?
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Use doc.childNodes to iterate through each span, and then filter the one whose className equals 4:
var doc = document.getElementById("test");
var notes = null;
for (var i = 0; i < doc.childNodes.length; i++) {
if (doc.childNodes[i].className == "4") {
notes = ...