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程序员之网络安全系列（二）：如何安全保存用户密码及哈希算法 - 更多技术 ...
...出原文
原文的非常细小的改动，都会引起Hash结果的非常大的变化
因此，这个比较适合用来保存用户密码，因为不能反推出用户密码，Hash结果一致就证明原文一致，我们来用Ruby代码试一下上面的第二点 （MD5是一种常用的Hash...
What does -save-dev mean in npm install grunt --save-dev
...pm install," those "devDependecies" get installed.
– core
Jan 28 '15 at 23:20
6
I tried to unders...
【软著】软件著作权证书申请流程及注意事项，模板分享 - App Inventor 2 中...
...，简单很多。只要你提供的材料及文档格式没问题，那就大概率能过。必须按照模板来写，参考模板见附件（源码模板带行号，自动就是每页50行），再配合下文的注意事项。
4、是否收费？一般来说，找第三方的话，收费约60...
What is the difference between children and childNodes in JavaScript?
... Yeah, IE seems to have some problems: quirksmode.org/dom/w3c_core.html#t71
– Felix Kling
Oct 28 '11 at 23:12
4
...
What's the difference between ngModel.$modelValue and ngModel.$viewValue
... $viewValue is not always a string. It is a string for the current Angular core directives, but it may be a primitive or an Object in your custom controls. A good example, is the <input file="type"> component, where viewValue contains FileList object with files attached by the user. The Angula...
How to configure git bash command line completion?
...nstalling by running this command should fix it:
sudo apt-get install git-core bash-completion
On Mac
You can install git completion using Homebrew or MacPorts.
Homebrew
if $BASH_VERSION > 4: brew install bash-completion@2 (updated version)
Pay special care which version of bash you have as...
Git Bash is extremely slow on Windows 7 x64
...by running three commands to set some config options:
git config --global core.preloadindex true
git config --global core.fscache true
git config --global gc.auto 256
Notes:
core.preloadindex does filesystem operations in parallel to hide latency (update: enabled by default in Git 2.1)
core.fsc...
EF LINQ include multiple and nested entities
...
In Entity Framework Core (EF.core) you can use .ThenInclude for including next levels.
var blogs = context.Blogs
.Include(blog => blog.Posts)
.ThenInclude(post => post.Author)
.ToList();
More information: https://docs.mi...
Add floating point value to android resources/values
... value programmatically you can use ResourcesCompat.getFloat from androidx.core
Gradle dependency:
implementation("androidx.core:core:${version}")
Usage:
import androidx.core.content.res.ResourcesCompat;
...
float value = ResourcesCompat.getFloat(context.getResources(), R.dimen.my_dimen);
...
How can javascript upload a blob?
...er-side. In my case, my blob exceeded the http://www.php.net/manual/en/ini.core.php#ini.upload-max-filesize and post_max_size limit in PHP.INI so the file was leaving the front end form but getting rejected by the server. You could either increase this value directly in PHP.INI or via .htaccess
...