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Signal handling with multiple threads in Linux
In Linux, what happens when a program (that possibly has multiple threads) receives a signal, like SIGTERM or SIGHUP?
2 Ans...
Get current batchfile directory
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System read-only variable %CD% keeps the path of the caller of the batch, not the batch file location.
You can get the name of the batch script itself as typed by the user with %0 (e.g. scripts\mybatch.bat). Parameter extensions ca...
Why exactly is eval evil?
...tanding what macros are really for and not understanding that a function already does the job.
It often is the wrong tool for the job to use EVAL and it often indicates that the beginner does not understand the usual Lisp evaluation rules.
If you think you need EVAL, then check if something like FUN...
Can JavaScript connect with MySQL?
...t’s a connector that can be called directly from your JavaScript code to read and write your data. As it accesses the data nodes directly, there is no extra latency from passing through a MySQL Server and need to convert from JavaScript code//objects into SQL operations. If for some reason, you’...
Understanding ibeacon distancing
...ot perfect, and require that you control for other variables. Be sure you read up on the complexities and limitations before misusing this.
When we were building the Android iBeacon library, we had to come up with our own independent algorithm because the iOS CoreLocation source code is not availa...
What is the need of JSF, when UI can be achieved with JavaScript libraries such as jQuery and Angula
I was reading about JSF that its a UI framework and provides some UI components. But how is it better or different from number of components that are available from jQueryUI, AngularJS, ExtJS, or even plain HTML, CSS and JavaScript.
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Some font-size's rendered larger on Safari (iPhone)
...to use the media query. It seems that this can make some text difficult to read: Beware of -webkit-text-size-adjust:none
– Gemmu
Feb 13 '15 at 12:46
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Pass all variables from one shell script to another?
...mmand, or if the assignment is a result of the operation of the getopts or read utilities, the export attribute shall persist until the variable is unset.
From the Bash Manual:
-a: Mark variables and function which are modified or created for export to the environment of subsequent commands.
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What does 'const static' mean in C and C++?
...r bss segment depending on the architecture, and might be in memory marked read-only.
All that is how C treats these variables (or how C++ treats namespace variables). In C++, a member marked static is shared by all instances of a given class. Whether it's private or not doesn't affect the fact tha...
How can I tell Rails to use RSpec instead of test-unit when creating a new Rails app?
...ec/spec_helper.rb
create spec/rails_helper.rb
I strongly recommended to read through all spec_helper and rails_helper comments to get a good understanding of what each option does.
Once everything is set you can run all your tests with:
bundle exec rspec
You can read more about the recommend...