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Where do you store your salt strings?
...rks as long as it stays secret (opposite to the salt). A typical attack is SQL-injection, when someone gains access to the database but not to the code, a pepper stored in the database will be useless then. Most BCrypt implementations will add the salt automatically to the resulting hash-value, so t...
What are some (concrete) use-cases for metaclasses?
...with it.
For other real-world examples, take a look at various ORMs, like sqlalchemy's ORM or sqlobject. Again, the purpose is to interpret defintions (here SQL column definitions) with a particular meaning.
share
...
Difference between reduce and foldLeft/fold in functional programming (particularly Scala and Scala
... doesn't shuffle and doesn't use HashPartitioner.
import org.apache.spark.sql.SparkSession
/* Note: standalone (non-local) mode */
val master = "spark://...:7077"
val spark = SparkSession.builder.master(master).getOrCreate()
/* Note: deterministic order */
val rdd = sc.parallelize(Seq("a", "b"...
PHP parse/syntax errors; and how to solve them
... statement and variable.
⇓
if ($var = pdo_query($sql) {
$result = …
The curly { brace does not open the code block, without closing the if expression with the ) closing parenthesis first.
Else does not expect conditions
⇓
else ($var >= 0)
Solution: Remo...
C++实现一款简单完整的聊天室服务器+客户端 - C/C++ - 清泛网 - 专注C/C++及内核技术
...最小化按钮，则需要下面的代码
// 来绘制该图标。对于使用文档/视图模型的 MFC 应用程序，
// 这将由框架自动完成。
void CClientDlg::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // 用于绘制的设备上下文
SendMessage(WM_ICONERASEBKGN...
What is the best way to compute trending topics or tags?
...
For anyone who would like it, I now have SQL queries to do this.
– thouliha
Feb 8 '16 at 13:42
1
...
What does Expression.Quote() do that Expression.Constant() can’t already do?
... wants to process expression trees into some other query language (such as SQL) could look out for a ConstantExpression with type Expression instead of a UnaryExpression with the special Quote node type, and everything else would be the same.
You are correct. We could encode semantic information t...
Comparison of full text search engine - Lucene, Sphinx, Postgresql, MySQL?
...use it talks directly to the database. Any slowness will come from complex SQL queries and un-indexed foreign keys and other such problems. I've never noticed any slowness in searching either.
I'm a Rails guy, so I've no idea how easy it is to implement with Django. There is a Python API that comes ...
How can you do anything useful without mutable state?
... ones in my new tree.
Using a more significant example, I also wrote this SQL parser which is totally stateless (or at least my code is stateless, I don't know whether the underlying lexing library is stateless).
Stateless programming is just as expressive and powerful as stateful programming, it ...
Is Unit Testing worth the effort? [closed]
... Testing is all about happiness. I've got a 3900-line package (PL/SQL) that handles automated postings to the general ledger system. Now, I personally hate dealing with accountants - they're so picky about little things like fractional pennies and stuff. Buncha anal-retentive arithmetic gee...