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When to use SELECT … FOR UPDATE?
... a DML query creates a copy of the record (in one or another way) and generally readers do not block writers and vice versa. For these databases, a SELECT FOR UPDATE would come handy: it would lock either SELECT or the DELETE query until another session commits, just as SQL Server does.
When sh...
Easiest way to upgrade eclipse 3.7 to 4.2 (Juno)
...4.2 instead of 3.7, what is the easiest way to upgrade to it, short of installing a separate copy of juno and re-installing all my existing plugins from 3.7 into it?
...
Add shadow to custom shape on Android
...
After Lots of search finally I got this
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<!-- Bottom 2dp Shadow -->
<item>
<shape android:shape="recta...
throw new std::exception vs throw std::exception
...xceptions is to throw an exception object and to catch it by reference (usually const reference). The C++ language requires the compiler to generate the appropriate code to construct the exception object and to properly clean it up at the appropriate time.
Throwing a pointer to a dynamically alloca...
How to get a property value based on the name
....Name == propertyName)
.GetValue(car, null);
}
If you want to be really fancy, you could make it an extension method:
public static object GetPropertyValue(this object car, string propertyName)
{
return car.GetType().GetProperties()
.Single(pi => pi.Name == propertyName)
....
PHP shell_exec() vs exec()
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shell_exec returns all of the output stream as a string. exec returns the last line of the output by default, but can provide all output as an array specifed as the second parameter.
See
http://php.net/manual/en/function.shell-exec.php
http:...
How do I use brew installed Python as the default Python?
... to Homebrew (after using fink and macport) on Mac OS X 10.6.2. I have installed python 2.7 with
19 Answers
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Using OpenGl with C#? [closed]
... I don't think these functions are very representative, because they are all deprecated and removed from the OpenGl core profile.
– Arne
Apr 23 '13 at 16:55
6
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What is a 'semantic predicate' in ANTLR?
...er: it parses an input string consisting of at least
// one number, optionally followed by zero or more comma's and numbers
parse
: number (',' number)* EOF
;
// matches a number that is between 1 and 3 digits long
number
: Digit Digit Digit
| Digit Digit
| Digit
;
// matches a si...
Why is “Set as Startup” option stored in the suo file and not the sln file?
...e this setting should be stored in the solution file so it's shared across all users and part of source code control. Since we don't check in the suo file, each user has to set this separately which seems strange.
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