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How to set child process' environment variable in Makefile

... I have GNU make 3.81, and all: <\n\t>export PROJ_ROOT=$(CURDIR)<\n\t>echo $(PROJ_ROOT)<\n> outputs the correct expansion for the first row, but only echo for the second one. PROJ_ROOT is not set after running make. Spaces around = gi...
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How do I change the string representation of a Python class? [duplicate]

... functions. Json dumps treats the object as a dictionary, and will convert all keys to strs. – mchicago Mar 7 '14 at 12:14 add a comment  |  ...
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Windows下如何判断Win32 or x64? - C/C++ - 清泛网 - 专注C/C++及内核技术

...uld load it by function GetProcAddress, because * it is not available on all version of Windows. */ LPFN_ISWOW64PROCESS fnIsWow64Process = NULL; /** * This function tells if your application is a x64 program. */ BOOL Isx64Application() { return (sizeof(LPFN_ISWOW64PROCESS) == 8)? T...
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rgdal package installation

...liam Kyngesburye at http://www.kyngchaos.com/ may be used for source installs on OSX. As you seem to be under Linux, you always build package from source, so you will have to install the corresponding libraries on your system. If you are under Mint, Ubuntu or another Debian derivative, you can d...
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Visual Studio 2013 doesn't discover unit tests

...io. To run the tests I try to go to the menu and choose Test -> Run -> Run all tests or by opening the test explorer window. By those to methods visual studio doesn’t discover any tests in the solution. ...
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Checking images for similarity with OpenCV

...he same image was passed twice, 0% would be returned if the images were totally different. 4 Answers ...
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Connection to SQL Server Works Sometimes

... Thanks, this resolved the error for me. Interestingly, all the IP addresses were set to disabled (previously they were not). It would be good to know what can cause these to become disabled as I don't think the config will have been changed manually in my case... ...
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Windows batch: sleep [duplicate]

...an into a funny issue using this method when I needed a script to automatically release the computer's IP address, wait a few minutes while I reconfigured a switch port, and then renew the IP address. During the intervening moments that the switch port was down, the network connection was lost and ...
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Can you have multiline HTML5 placeholder text in a ?

... For <textarea>s the spec specifically outlines that carriage returns + line breaks in the placeholder attribute MUST be rendered as linebreaks by the browser. User agents should present this hint to the user when the element's value is the empty string a...
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Is it possible to run a single test in MiniTest?

I can run all tests in a single file with: 13 Answers 13 ...