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typeof !== “undefined” vs. != null
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typeof is safer as it allows the identifier to never have been declared before:
if(typeof neverDeclared === "undefined") // no errors
if(neverDeclared === null) // throws ReferenceError: neverDeclared is not defined
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How to print a string in fixed width?
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EDIT 2013-12-11 - This answer is very old. It is still valid and correct, but people looking at this should prefer the new format syntax.
You can use string formatting like this:
>>> print '%5s' % 'aa'
aa
>>...
How can I create a self-signed cert for localhost?
...but this sets up a self-signed cert for my machine name, and when browsing it via https://localhost I receive the IE warning.
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How to find a text inside SQL Server procedures / triggers?
...d of work. We need to find all places that uses [10.10.100.50] to change it.
14 Answers
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Is it acceptable and safe to run pip install under sudo?
...'ve started to use my Mac to install Python packages in the same way I do with my Windows PC at work; however on my Mac I've come across frequent permission denied errors while writing to log files or site-packages.
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Why aren't pointers initialized with NULL by default?
Can someone please explain why pointers aren't initialized to NULL ?
Example:
15 Answers
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Basic HTTP authentication with Node and Express 4
It looks like implementing basic HTTP authentication with Express v3 was trivial:
9 Answers
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How to convert an address into a Google Maps Link (NOT MAP)
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If you have lat-long then use below URL
https://maps.google.com/?ll=latitude,longitude
Example: maps.google.com/?ll=38.882147,-76.99017
UPDATE
As of year 2017, Google now has an official way to create cross-platform Google Maps URLs:
https://developers.google.com/maps/documentation/urls/gui...
Custom ImageView with drop shadow
...y, I don't foresee any more answers on this one, so what I ended up going with for now is just a solution for rectangular images. I've used the following NinePatch:
along with the appropriate padding in XML:
<ImageView
android:id="@+id/image_test"
android:background="@drawable/dr...
LINQ to SQL: Multiple joins ON multiple Columns. Is this possible?
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Joining on multiple columns in Linq to SQL is a little different.
var query =
from t1 in myTABLE1List // List<TABLE_1>
join t2 in myTABLE1List
on new { t1.ColumnA, t1.ColumnB } equals new { t2.ColumnA, t2.ColumnB }
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You have to take advantage o...