Re: [SOLVED] writing binary values (bytes) to a file
Hello again, Thank you all for the posts and explanations, After getting the clojure SVN version and few tweaks in the code, the working result looks like: (with-open [ofile (new java.io.FileOutputStream (str result-directory / (make-filename x y)) (boolean true))] ; I am appending only (. ofile write (into-array Byte/TYPE [(byte (bit-shift-right pix 16)) (byte (bit-shift-right pix 8)) (byte pix)])) ; the pix is of the Integer type Vlad --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
Re: [SOLVED] writing binary values (bytes) to a file
Hi Mark,
The metadata points to the source:
user (meta #'with-open)
{:doc bindings = name init\n\n Evaluates body in a try expression
with name bound to the value of\n init, and a finally clause that
calls (.close name)., :ns #Namespace clojure.core, :arglists
([bindings body]), :file core.clj, :name with-open, :macro
true, :line 1752}
If you look through the archive I believe somebody posted code that
uses the metadata to locate the source and display it at the REPL.
Stu
On Wed, Nov 19, 2008 at 2:45 PM, prhlava [EMAIL PROTECTED]
wrote:
Hello again,
Thank you all for the posts and explanations,
After getting the clojure SVN version and few tweaks in the code, the
working result looks like:
(with-open [ofile (new java.io.FileOutputStream
(str result-directory
/
(make-filename x y))
(boolean true))] ; I am
appending only
(. ofile write
(into-array Byte/TYPE
[(byte (bit-shift-right pix
16))
(byte (bit-shift-right pix
8))
(byte pix)])) ; the pix is
of the Integer type
It looks like with-open accepts any number of bindings. Does it just
call close on the first one when the body finishes or on all of them?
If I wanted to figure this out for myself, how would I find the source
code for with-open?
--
R. Mark Volkmann
Object Computing, Inc.
--~--~-~--~~~---~--~~
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Re: [SOLVED] writing binary values (bytes) to a file
On Wed, Nov 19, 2008 at 4:49 PM, Mark Volkmann [EMAIL PROTECTED] wrote: On Wed, Nov 19, 2008 at 2:45 PM, prhlava [EMAIL PROTECTED] wrote: Hello again, Thank you all for the posts and explanations, After getting the clojure SVN version and few tweaks in the code, the working result looks like: (with-open [ofile (new java.io.FileOutputStream (str result-directory / (make-filename x y)) (boolean true))] ; I am appending only (. ofile write (into-array Byte/TYPE [(byte (bit-shift-right pix 16)) (byte (bit-shift-right pix 8)) (byte pix)])) ; the pix is of the Integer type It looks like with-open accepts any number of bindings. Does it just call close on the first one when the body finishes or on all of them? If I wanted to figure this out for myself, how would I find the source code for with-open? Hi, If you're using Slime in Emacs, type in the word with-open (or put your cursor on it in a Clojure source file) and press M-. (alt-period or Escape, period). Best, Graham --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
Re: [SOLVED] writing binary values (bytes) to a file
Thanks Stu! I wasn't aware of the meta function. That helps a lot!
I looked for occurrences of (meta throughout the clojure and
clojure-contrib repositories, but I didn't find a function that prints
the code for a given function. That would be incredibly useful for
learning! Does anybody know what function does that and whether it is
part of clojure-contrib?
On Wed, Nov 19, 2008 at 4:09 PM, Stuart Halloway
[EMAIL PROTECTED] wrote:
Hi Mark,
The metadata points to the source:
user (meta #'with-open)
{:doc bindings = name init\n\n Evaluates body in a try expression
with name bound to the value of\n init, and a finally clause that
calls (.close name)., :ns #Namespace clojure.core, :arglists
([bindings body]), :file core.clj, :name with-open, :macro
true, :line 1752}
If you look through the archive I believe somebody posted code that
uses the metadata to locate the source and display it at the REPL.
Stu
On Wed, Nov 19, 2008 at 2:45 PM, prhlava [EMAIL PROTECTED]
wrote:
Hello again,
Thank you all for the posts and explanations,
After getting the clojure SVN version and few tweaks in the code, the
working result looks like:
(with-open [ofile (new java.io.FileOutputStream
(str result-directory
/
(make-filename x y))
(boolean true))] ; I am
appending only
(. ofile write
(into-array Byte/TYPE
[(byte (bit-shift-right pix
16))
(byte (bit-shift-right pix
8))
(byte pix)])) ; the pix is
of the Integer type
It looks like with-open accepts any number of bindings. Does it just
call close on the first one when the body finishes or on all of them?
If I wanted to figure this out for myself, how would I find the source
code for with-open?
--
R. Mark Volkmann
Object Computing, Inc.
--
R. Mark Volkmann
Object Computing, Inc.
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google Groups
Clojure group.
To post to this group, send email to clojure@googlegroups.com
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at
http://groups.google.com/group/clojure?hl=en
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