Combine multiple PDF files into single PDF file in Clojure
want. Here is how to combine pdf files into one file
(defn read-pdf-bytes [file-path ... , it's better to pack them together into a single PDF file.
I'd used the clj-pdf to pack a set ... of merge-pdf function
(defn merge-pdfs
"merge multiple PDFs into output file"
[& {:keys ... . Such as saving a slide which consists of a series of orderd images, or a newspaper provided as PDF files
How to invoke Java method in Clojure
[Call overloaded Java methods]
I get this problem, I want to call the get method ... is represented as array, in Java if there is no variable length parameter we just omit it, but in Clojure, we ... need to specify it explicitly to make it match the type signature of Java method, we need to pass ... of java.nio.file.Paths from clojure, I tried a lot of options, but I always get this error
cannot be cast
Clojure list files from folders and append to file
for this problem is list all files from all the sources and append to a big text file, then open ...
(println "appending from source:" s)
(append-to-file out-file (string-list-files-rec s ... search the big file list with multi-occur command in Emacs.
Prepare two bat files
ls.bat
@echo ... to
append."
[file-name s]
(spit file-name s :append true))
(defn generate-big-list
Insertion Sort in Clojure
In Insertion Sort, insert means search and find the position of current element ... .
The code is listed as below.
(defn insertion-sort [a]
(loop [rest-part a partial-sorted ... )))
)
)
)
)
)
(insertion-sort '( 1 4 223 3 2 4 23 45 5 43 3 12 113 1))
The output.
user ... > (insertion-sort '( 1 4 223 3 2 4 23 45 5 43 3 12 113 1))
["rest-part" (1 4 223 3 2 4 23 45 5 43 3
Clojure cons, conj and concat
Manipulating lists and vectors in Clojure usually involves three functions: cons, conj ... and concat. Learn to use them helps you deal with list and vectors more efficiently.
[cons two ... slots can be anything
ELISP> (cons 2 '(3))
(2 3)
ELISP> (cons 2 2)
(2 . 2)
In Clojure ... :505)
It prepends the first parameter to the collection.
[conj works on collection]
Clojure
Convert XML to HTML with XSLT in Clojure
Convert XML to HTML with XSLT, using javax.xml package.
(defn xslt-transform [xml xslt ... . (java.io.StringReader. xml)))
tfactory (javax.xml.transform.TransformerFactory/newInstance ... )
xslt-source (javax.xml.transform.stream.StreamSource. (java.io.StringReader. xslt ... ))
transformer (.newTransformer tfactory xslt-source)
source
Java IO PushbackReader example in Clojure
to pushback chars back to the stream or look ahead.
For example the Clojure programming language ...
A PushbackReader can wrap a stream from file, string or standard input. PushbackReader ... then wrapped in a LineNumberingPushbackReader.
[Create a PushbackReader]
Let's define a PushbackReader ... on a String in Clojure
(def pbr (java.io.PushbackReader. (java.io.InputStreamReader
How to automatically add parentheses in Clojure REPL
in a REPL. In this post we will introduce how to automatically add parentheses to your one line of Clojure ...
In previous post we discussed about how Clojure REPL works and the basic component ... with '(', we will read the whole expression from input stream and add parentheses to it then push the string ... send expression in Emacs cider REPL, it doesn't work, as if they use two different Clojure instance
How Clojure REPL works
If you are using Clojure REPL, there will be times you want to adjust the REPL behavior ... \core.clj, clojure1.6\src\jvm\clojure\lang\LispReader.java.
[Where the REPL waiting input ... , the only way will be to modify the source code of Clojure. Clojure is open source, you can build ... it from source and run it in 1 minutes.
This post illustrate some key points in Clojure's REPL