symbols
Meaning of the various symbols in .aspx page of asp.net
It is just syntax. <% %> is simply short for <script runat=”server”> </script> aka code render blocks. <%# %> are binding expressions (plus the above). <%= %> is the above + a Response.Write(). <%: %> is the above + a Response.Write() wrapped in Html.Encode (new in .NET 4.0). <%$ %> is an ASP.NET expression, used … Read more
Ruby – What is the difference between intern and to_sym
They seem to be aliases for the same thing. From the documentation you can see that the sample code of intern uses to_sym: intern → symbol Returns the Symbol corresponding to str, creating the symbol if it did not previously exist. See Symbol#id2name. “Koala”.intern #=> :Koala s=”cat”.to_sym #=> :cat s == :cat #=> true s=”@cat”.to_sym … Read more
SymPy – Arbitrary number of Symbols
The symbols function can be used to easily generate lists of symbols In [1]: symbols(‘a0:3’) Out[1]: (a₀, a₁, a₂) In [2]: numEquations = 15 In [3]: symbols(‘a0:%d’%numEquations) Out[3]: (a₀, a₁, a₂, a₃, a₄, a₅, a₆, a₇, a₈, a₉, a₁₀, a₁₁, a₁₂, a₁₃, a₁₄)
Using symbol as object-key type in TypeScript
TypeScript 4.4 allows symbols in index signatures: type SymbolIndex = { [key: symbol | string]: string // works } const sym = Symbol(“descr”); const t1: SymbolIndex = { “foo”: “bar”, [Symbol.iterator]: “qux”, sym: “sym” }; // all result in string t1.foo t1.sym t1[Symbol.iterator] t1[“oh”] Playground With older versions, SymbolIndex will trigger an error: An index … Read more
How can you change an age-mismatched PDB to match properly?
the windbg will not modify pdb’s age – it only looks it up to match that of executable – the compiler does when it (re)generates executable and debug files. now, based on the debuginfo.com article, it is not too difficult to arrive at the proper debug directory (of type codeview), match it against PDB7 signature … Read more
WinDbg symbol resolution
Sorry for the late reply. In your post you mention that you are seeing the following error message. *** WARNING: Unable to verify checksum for C:\TheProgram\SomeSubfolder\AnotherSubfolder\MyDll.dll You also ask the question, “where do I put my symbols for my DLL in the symbol path?” Here is a response for the first problem: Steps to identify … Read more
printing “” using html
Use HTML character references: <html> Should output <html>
Why does double splat only work with symbol keys?
I ran into something like this recently. If you’re in Rails and you have a method that takes keyword arguments and you have a strong params hash that you want to send to it, you can use symbolize_keys on the params hash and it will properly separate out the arguments, no double splat needed. Model … Read more
What is the difference between equality and equivalence?
Wikipedia: Equivalence relation: In mathematics, an equivalence relation is a binary relation between two elements of a set which groups them together as being “equivalent” in some way. Let a, b, and c be arbitrary elements of some set X. Then “a ~ b” or “a ≡ b” denotes that a is equivalent to b. … Read more