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Abort makefile if variable not set

...empty values, # die with an error otherwise. # # Params: # 1. Variable name(s) to test. # 2. (optional) Error message to print. check_defined = \ $(strip $(foreach 1,$1, \ $(call __check_defined,$1,$(strip $(value 2))))) __check_defined = \ $(if $(value $1),, \ $(error Unde...
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How can I check if an element exists in the visible DOM?

How do you test an element for existence without the use of the getElementById method? 25 Answers ...
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Can you help me understand Moq Callback?

... a doc bug... EDIT: In response to your clarification... For each mocked method Setup you perform, you get to indicate things like: constraints on inputs the value for / way in which the return value (if there is one) is to be derived The .Callback mechanism says "I can't describe it right now...
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the source file is different from when the module was built

This is driving me crazy. 27 Answers 27 ...
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Stop Excel from automatically converting certain text values to dates

... This doesn't work for me in Excel 2010 if the text is too long :( – steve Mar 31 '14 at 15:09 7 ...
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What can I do to resolve a “Row not found or changed” Exception in LINQ to SQL on a SQL Server Compa

...load it successfully and set the column-String to null. Now you change something and call SubmitChanges(). LINQ will generate a SQL query containing "WHERE [title] IS NULL", to make sure the title has not been changed by someone else. LINQ looks up the properties of [title] in the mapping. LINQ wi...
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Cloning a MySQL database on the same MySql instance

... a script which copies my current database sitedb1 to sitedb2 on the same mysql database instance. I know I can dump the sitedb1 to a sql script: ...
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log messages appearing twice with Python Logging

I'm using Python logging, and for some reason, all of my messages are appearing twice. 8 Answers ...
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How to check if a process is running via a batch script

... Another possibility I came up with, inspired by using grep, is: tasklist /FI "IMAGENAME eq myapp.exe" 2>NUL | find /I /N "myapp.exe">NUL if "%ERRORLEVEL%"=="0" echo Program is running It doesn't need to save an extra file, so I prefer this ...
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WAMP 403 Forbidden message on Windows 7

...llow Deny from all Allow from 127.0.0.1 </Directory> The same goes for your PHPMyAdmin access, the config file is phpmyadmin.conf : <Directory "c:/wamp/apps/phpmyadmin3.4.5/"> Options Indexes FollowSymLinks MultiViews AllowOverride all Order Deny,Allow ...