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SQL WHERE.. IN clause multiple columns
...e time without issue. Unless you are using an older optimizer (6.5, 7, 8, etc) it shouldn't have a problem with this syntax.
– mrdenny
Jul 16 '09 at 8:09
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Easiest way to detect Internet connection on iOS?
...ample on how to determine host reachability, reachability by WiFi, by WWAN etc. For a very simply check of network reachability, you can do something like this
Reachability *networkReachability = [Reachability reachabilityForInternetConnection];
NetworkStatus networkStatus = [networkReachabilit...
ASP.NET Temporary files cleanup
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Just an update on more current OS's (Vista, Win7, etc.) - the temp file path has changed may be different based on several variables. The items below are not definitive, however, they are a few I have encountered:
"temp" environment variable setting - then it would be:
%t...
Developing for Android in Eclipse: R.java not regenerating
...t allowed. Or when you have references that don't point to existing files, etc.
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Struct inheritance in C++
...t is not like a C struct.
In C++, a struct can have methods, inheritance, etc. just like a C++ class.
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Hashset vs Treeset
...o deal with the ordered set like first(), last(), headSet(), and tailSet() etc
Important points:
Both guarantee duplicate-free collection of elements
It is generally faster to add elements to the HashSet and then convert the collection to a TreeSet for a duplicate-free sorted traversal.
None of ...
How to check if a variable is set in Bash?
...ken from. One construct I use in almost any script I write is : ${FOOBAR:=/etc/foobar.conf} to set a default value for a variable if it is unset or null.
– Jens
Mar 10 '15 at 11:08
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C# nullable string error
...> and the ? suffix are for value types such as Int32, Double, DateTime, etc.
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XmlSerializer giving FileNotFoundException at constructor
... according to the environment (console application vs being hosted in IIS, etc). I guess what should have been implemented was a TryLoadAssembly() or something similar.
– Allon Guralnek
Jul 29 '15 at 4:40
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Missing Push Notification Entitlement
...airly states that the "distribution profile MUST have the aps-environment, etc" in it, and that when I open the provisioning in a text editor, I should find it lying there...
– mirageservo
Feb 11 '13 at 7:11
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