Entryle zip

I don't have the rep points to post in the comments section, but to answer the related question :. What if I want zip to continue where one list run out of elements? In which case the shorter list element should take default value. What you would do is to use Array. Resize to pad-out the shorter sequence with default values, and then Zip them together. Please note that using Array. Resize has a caveat : Redim Preserve in C? If it is unknown which sequence will be the shorter one, a function can be created that susses it:.

Going back to the main answer of the original question , another interesting thing that one might wish to do when the lengths of the sequences to be "zipped" are different is to join them in such a way so that the end of the list matches instead of the top. This can be accomplished by "skipping" the appropriate number of items using.

As others have stated, Zip lets you combine two collections for use in further Linq statements or a foreach loop. Operations that used to require a for loop and two arrays can now be done in a foreach loop using an anonymous object. An example I just discovered, that is kind of silly, but could be useful if parallelization were beneficial would be a single line Queue traversal with side effects:. Skip 1 represents the next or peek items in a queue.

The Zip method combines these two into a single anonymous object with a Next and Current property. Then we filter with Where and make changes with AsParallel. Of course the last bit could just be a regular foreach or another Select statement that returns the offending time segments. The Zip method allows you to "merge" two unrelated sequences, using a merging function provider by you, the caller.

In this example, you take two arbitrary, unrelated sequences, and combine them using an arbitrary function in this case, just concatenating items from both sequences into a single string. Stack Overflow for Teams — Collaborate and share knowledge with a private group.

Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Ask Question. Asked 10 years, 10 months ago. Active 1 month ago. Viewed 54k times. Improve this question. Jim G. Are you referring to this: msdn. It's like the two sides of a zipper coming together. Possible duplicate of What is the purpose of a zip function as in Python or C 4.

Add a comment. Active Oldest Votes. ToString ; foreach var s in q Console. Improve this answer. I like this answer because it shows what happens when the number of elements doesn't match up, similar to the msdn documentation — DLeh.

B Write a method to yield return each element of the shorter list, and then continue yield return ing default indefinitely thereafter. Option B requires you to know in advance which list is shorter. Zip is for combining two sequences into one. Definitely the best explanation here.

Loved the example of zipper. It was so natural. My initial impression was if it has something to do with speed or something like that as if you zip through a street on your car.

Justin Morgan Justin Morgan I liked this answer too, because it mentions the similarity to Select — iliketocode. ToList ; In the above we are enumerating travelling the left side of the zipper and the right side of the zipper and performing an operation on each tooth. The Local File Header of each entry represents information about the file such as comment, file size and file name.

The extra data fields optional can accommodate information for extensibility options of the ZIP format. The Local File Header has specific field structure consisting of multi-byte values. All the values are stored in little-endian byte order where the field length counts the length in bytes. All the structures in a ZIP file use 4-byte signatures for each file entry. The end of central directory signature is 0xb50 and can be distinguished using its own unique signature. Following is the order of information stored in Local File Header.

Table of Content. What is a ZIP file? ZIP File Format specifications, the following compression methods are supported. If the entry is read from a ZIP file or ZIP file formatted input stream, this is the last modification time from the zip file entry's optional extra data if the extended timestamp fields are present.

Otherwise the last modification time is read from the entry's date and time fields , the default TimeZone is used to convert the standard MS-DOS formatted date and time to the epoch time. Returns: The last modification time of the entry, null if not specified Since: 1.

If set, the last access time will be stored into the extended timestamp fields of entry's optional extra data , when output to a ZIP file or ZIP file formatted stream.

The last access time is from the extended timestamp fields of entry's optional extra data when read from a ZIP file or ZIP file formatted stream. Returns: The last access time of the entry, null if not specified Since: 1.

If set, the creation time will be stored into the extended timestamp fields of entry's optional extra data , when output to a ZIP file or ZIP file formatted stream. The creation time is from the extended timestamp fields of entry's optional extra data when read from a ZIP file or ZIP file formatted stream.

Returns: the creation time of the entry, null if not specified Since: 1. Returns: the uncompressed size of the entry data, or -1 if not known See Also: setSize long getCompressedSize public long getCompressedSize Returns the size of the compressed entry data.

In the case of a stored entry, the compressed size will be the same as the uncompressed size of the entry. Returns: the size of the compressed entry data, or -1 if not known See Also: setCompressedSize long setCompressedSize public void setCompressedSize long csize Sets the size of the compressed entry data. Returns: the CRC checksum of the uncompressed entry data, or -1 if not known See Also: setCrc long setMethod public void setMethod int method Sets the compression method for the entry.

Returns: the compression method of the entry, or -1 if not specified See Also: setMethod int setExtra public void setExtra byte[] extra Sets the optional extra field data for the entry.

Returns: the extra field data for the entry, or null if none See Also: setExtra byte[] setComment public void setComment String comment Sets the optional comment string for the entry.