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Resolve #318, add new functions and

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zhangleijlu committed Jan 6, 2019
1 parent 969f4e2 commit 034de7acd88e848e051b9ee809767e63476cd88e
Showing with 248 additions and 430 deletions.
  1. +44 −45 CONTRIBUTING.md
  2. +0 −384 CONTRIBUTING_TEMPLATE.md
  3. +1 −1 excelize.go
  4. +70 −0 sheet.go
  5. +114 −0 sheet_test.go
  6. +19 −0 sheetpr.go
@@ -1,4 +1,3 @@
<!-- use this template to generate the contributor docs with the following command: `$ lingo run docs --template CONTRIBUTING_TEMPLATE.md --output CONTRIBUTING.md` -->
# Contributing to excelize

Want to hack on excelize? Awesome! This page contains information about reporting issues as well as some tips and
@@ -376,89 +375,89 @@ reading through [Effective Go](https://golang.org/doc/effective_go.html). The
kool-aid is a lot easier than going thirsty.

## Code Review Comments and Effective Go Guidelines
[CodeLingo](https://codelingo.io) automatically checks every pull request against the following guidelines from [Effective Go](https://golang.org/doc/effective_go.html) and [Code Review Comments](https://github.com/golang/go/wiki/CodeReviewComments).

[CodeLingo](https://codelingo.io) automatically checks every pull request against the following guidelines from [Effective Go](https://golang.org/doc/effective_go.html) and [Code Review Comments](https://github.com/golang/go/wiki/CodeReviewComments).

### Package Comment
Every package should have a package comment, a block comment preceding the package clause.
For multi-file packages, the package comment only needs to be present in one file, and any one will do.
The package comment should introduce the package and provide information relevant to the package as a
whole. It will appear first on the godoc page and should set up the detailed documentation that follows.

Every package should have a package comment, a block comment preceding the package clause.
For multi-file packages, the package comment only needs to be present in one file, and any one will do.
The package comment should introduce the package and provide information relevant to the package as a
whole. It will appear first on the godoc page and should set up the detailed documentation that follows.

### Single Method Interface Name
By convention, one-method interfaces are named by the method name plus an -er suffix

By convention, one-method interfaces are named by the method name plus an -er suffix
or similar modification to construct an agent noun: Reader, Writer, Formatter, CloseNotifier etc.

There are a number of such names and it's productive to honor them and the function names they capture.
Read, Write, Close, Flush, String and so on have canonical signatures and meanings. To avoid confusion,
don't give your method one of those names unless it has the same signature and meaning. Conversely,
if your type implements a method with the same meaning as a method on a well-known type, give it the
There are a number of such names and it's productive to honor them and the function names they capture.
Read, Write, Close, Flush, String and so on have canonical signatures and meanings. To avoid confusion,
don't give your method one of those names unless it has the same signature and meaning. Conversely,
if your type implements a method with the same meaning as a method on a well-known type, give it the
same name and signature; call your string-converter method String not ToString.


### Avoid Annotations in Comments

Comments do not need extra formatting such as banners of stars. The generated output
may not even be presented in a fixed-width font, so don't depend on spacing for alignment—godoc,
like gofmt, takes care of that. The comments are uninterpreted plain text, so HTML and other
annotations such as _this_ will reproduce verbatim and should not be used. One adjustment godoc
does do is to display indented text in a fixed-width font, suitable for program snippets.
may not even be presented in a fixed-width font, so don't depend on spacing for alignment—godoc,
like gofmt, takes care of that. The comments are uninterpreted plain text, so HTML and other
annotations such as _this_ will reproduce verbatim and should not be used. One adjustment godoc
does do is to display indented text in a fixed-width font, suitable for program snippets.
The package comment for the fmt package uses this to good effect.


### Comment First Word as Subject

Doc comments work best as complete sentences, which allow a wide variety of automated presentations.
The first sentence should be a one-sentence summary that starts with the name being declared.


### Good Package Name
It's helpful if everyone using the package can use the same name
to refer to its contents, which implies that the package name should
be good: short, concise, evocative. By convention, packages are
given lower case, single-word names; there should be no need for
underscores or mixedCaps. Err on the side of brevity, since everyone
using your package will be typing that name. And don't worry about
collisions a priori. The package name is only the default name for
imports; it need not be unique across all source code, and in the
rare case of a collision the importing package can choose a different
name to use locally. In any case, confusion is rare because the file
name in the import determines just which package is being used.

It's helpful if everyone using the package can use the same name
to refer to its contents, which implies that the package name should
be good: short, concise, evocative. By convention, packages are
given lower case, single-word names; there should be no need for
underscores or mixedCaps. Err on the side of brevity, since everyone
using your package will be typing that name. And don't worry about
collisions a priori. The package name is only the default name for
imports; it need not be unique across all source code, and in the
rare case of a collision the importing package can choose a different
name to use locally. In any case, confusion is rare because the file
name in the import determines just which package is being used.

### Avoid Renaming Imports

Avoid renaming imports except to avoid a name collision; good package names
should not require renaming. In the event of collision, prefer to rename the
most local or project-specific import.


### Context as First Argument
Values of the context.Context type carry security credentials, tracing information,
deadlines, and cancellation signals across API and process boundaries. Go programs
pass Contexts explicitly along the entire function call chain from incoming RPCs

Values of the context.Context type carry security credentials, tracing information,
deadlines, and cancellation signals across API and process boundaries. Go programs
pass Contexts explicitly along the entire function call chain from incoming RPCs
and HTTP requests to outgoing requests.

Most functions that use a Context should accept it as their first parameter.


### Do Not Discard Errors
Do not discard errors using _ variables. If a function returns an error,
check it to make sure the function succeeded. Handle the error, return it, or,
in truly exceptional situations, panic.

Do not discard errors using _ variables. If a function returns an error,
check it to make sure the function succeeded. Handle the error, return it, or,
in truly exceptional situations, panic.

### Go Error Format
Error strings should not be capitalized (unless beginning with proper nouns

Error strings should not be capitalized (unless beginning with proper nouns
or acronyms) or end with punctuation, since they are usually printed following
other context. That is, use fmt.Errorf("something bad") not fmt.Errorf("Something bad"),
so that log.Printf("Reading %s: %v", filename, err) formats without a spurious
so that log.Printf("Reading %s: %v", filename, err) formats without a spurious
capital letter mid-message. This does not apply to logging, which is implicitly
line-oriented and not combined inside other messages.


### Use Crypto Rand
Do not use package math/rand to generate keys, even
throwaway ones. Unseeded, the generator is completely predictable.
Seeded with time.Nanoseconds(), there are just a few bits of entropy.
Instead, use crypto/rand's Reader, and if you need text, print to
hexadecimal or base64

Do not use package math/rand to generate keys, even
throwaway ones. Unseeded, the generator is completely predictable.
Seeded with time.Nanoseconds(), there are just a few bits of entropy.
Instead, use crypto/rand's Reader, and if you need text, print to
hexadecimal or base64
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