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Abort makefile if variable not set
...IN_DIR, where to put binary artifacts)
$(call check_defined, \
LIB_INCLUDE_DIR \
LIB_SOURCE_DIR, \
library path)
This would output an error like this:
Makefile:17: *** Undefined OUT_DIR (build directory). Stop.
Notes:
The real check is done here:
$(if $(value...
Is there a way to instantiate objects from a string holding their class name?
...l has a factory template which is quite flexible: http://www.boost.org/doc/libs/1_54_0/libs/functional/factory/doc/html/index.html
My preference though is to generate wrapper classes which hide the mapping and object creation mechanism. The common scenario I encounter is the need to map different d...
App Inventor 2 字典代码块 · App Inventor 2 中文网
...常称为键）与另一个值关联的数据结构。
Q：App Inventor 2 什么情况下需要使用字典？
A：列表能完成字典的绝大部分功能，不过字典具有比列表更好的查找性能，因此如果要对数据结构执行大量的操作，建议优先使用字典。
显...
Storing Image Data for offline web application (client-side storage database)
...on almost all browsers) for blob download from web server
I went with XHR2-Lib by Phil Parsons, which is very much like JQUERY .ajax()
https://github.com/p-m-p/xhr2-lib
Storage
IndexedDB for IE and FireFox
Chrome: Polyfill (blob stored using FileSystem API, reference kept in IndexedDB) polyf...
Click button copy to clipboard using jQuery
...ttps://jsfiddle.net/jfriend00/v9g1x0o6/
And, you can also get a pre-built library that does this for you with clipboard.js.
Old, historical part of answer
Directly copying to the clipboard via JavaScript is not permitted by any modern browser for security reasons. The most common workaround is ...
Regular cast vs. static_cast vs. dynamic_cast [duplicate]
...
See also boost's two additional casts: boost.org/doc/libs/1_47_0/libs/conversion/…
– Neil G
Aug 10 '11 at 17:31
3
...
What are the big improvements between guava and apache equivalent libraries?
...that is absent from their counterpart. Thus, limiting yourself to only one library might be unwise.
That being said, if I had to choose, I'd opt to use Guava, keeping Apache Commons around for the (rare) cases where Guava does not have the needed functionality. Let me attempt to explain why.
Guava...
Why am I getting a “401 Unauthorized” error in Maven?
...ested the call with curl
curl -u username:password http://url/artifactory/libs-snapshot-local/com/myproject/api/1.0-SNAPSHOT/api-1.0-20160128.114425-1.jar --request PUT --data target/api-1.0-SNAPSHOT.jar
and I got the error:
{
"errors" : [ {
"status" : 401,
"message" : "Artifactory co...
Difference between a “coroutine” and a “thread”?
...l is not involved in the coroutine switches.
—http://www.boost.org/doc/libs/1_55_0/libs/coroutine/doc/html/coroutine/overview.html
A language that supports native threads can execute its threads (user threads) onto the operating system's threads (kernel threads). Every process has at least one...
How do HTML parses work if they're not using regexp?
...ating it yourself with lots of custom logic isn't such a great idea. Use a library that supports the standard algorithm if you can. e.g. search.cpan.org/~tobyink/HTML-HTML5-Parser-0.03/lib/HTML/HTML5/… / code.google.com/p/html5lib
– Quentin
Mar 8 '10 at 11:03...