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Difference between `set`, `setq`, and `setf` in Common Lisp?
...namic ones. And
there was no SETQ or SETF, just the SET function.
What is now written as:
(setf (symbol-value '*foo*) 42)
was written as:
(set (quote *foo*) 42)
which was eventually abbreviavated to SETQ (SET Quoted):
(setq *foo* 42)
Then lexical variables happened, and SETQ came to be use...
Calling Python in Java?
...cpython! You do not need any jni or jna or swig or .... You don't need to know any c, or c++. kool huh?
Advantages: Access to cpython, not as difficult as following methods
Disadvantages: Cannot change the member data of java objects directly from python. Is somewhat indirect, (jython is middle man)...
How to edit incorrect commit message in Mercurial? [duplicate]
...
Update: Mercurial has added --amend which should be the preferred option now.
You can rollback the last commit (but only the last one) with hg rollback and then reapply it.
Important: this permanently removes the latest commit (or pull). So if you've done a hg update that commit is no longer i...
How do CSS triangles work?
... this:
But there's no need for the top border, so set its width to 0px. Now our border-bottom of 200px will make our triangle 200px tall.
.triangle {
border-color: yellow blue red green;
border-style: solid;
border-width: 0px 200px 200px 200px;
height: 0px;
width: 0px;
}
an...
How to automatically install Emacs packages by specifying a list of package names?
... Previously I used this code and sometimes it did not work for some unknown reason saying "Package blah-blah is not available for installation" (here blah-blah is always the first element of the list). If I install the first package manually, everything works fine, but it is not a solution. Anyw...
Copying PostgreSQL database to another server
...rmbarnes: If there are problems - they have to be fixed. Without detailed knowledge what this "Some one" did - nobody can confirm nor dismiss this claim.
– user80168
Aug 6 '09 at 10:06
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What it the significance of the Javascript constructor property?
...out Object.getPrototypeOf for so long that I have no burning desire for it now.
– Tim Down
Apr 12 '12 at 22:06
1
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Choosing a stand-alone full-text search server: Sphinx or SOLR? [closed]
...
I've been using Solr successfully for almost 2 years now, and have never used Sphinx, so I'm obviously biased.
However, I'll try to keep it objective by quoting the docs or other people. I'll also take patches to my answer :-)
Similarities:
Both Solr and Sphinx satisfy all ...
Best way to trim strings after data entry. Should I create a custom model binder?
... explicitly trimming every user supplied string value. I'm interested to know how and when people are trimming strings.
15...
How do I export UIImage array as a movie?
...erious problem: I have an NSArray with several UIImage objects. What I now want to do, is create movie from those UIImages . But I don't have any idea how to do so.
...