symbols

How to detect at runtime whether symbols are stripped?

由 隐身守侯 提交于 2019-12-09 09:50:07
问题 In my C++ program, how can I detect programmatically at runtime whether symbols have been stripped via the 'strip' gnu development tool on Linux? I'd like a function definition which returns true if stripped, otherwise false. Would using dlsym() on "main()" work to detect this reliably? 回答1: I know the file command can tell the difference, so you could possibly look at its source to see what mechanism it uses. 回答2: From a comment left for another answer: A stripped ELF will lack a .symtab

Formula's or symbols in footnotes using knitr and kableExtra

由 强颜欢笑 提交于 2019-12-09 08:33:30
Does anyone know how to place a formula, a (weird) character, or words in italic within a sentence of a footnote of a table? I'm creating a pdf file with Rmarkdown and kableExtra. But stuff like $Y_{t-1}$ or $p < .001$ (since I want the p to be italic) does not work. Or should I really learn xtable? The trick is 1. to escape latex code and special characters four times, e.g. \\\\frac , 2. to set option escape=FALSE in footnote() . --- title: "Untitled" output: pdf_document --- ```{r tab} library(knitr) library(kableExtra) df <- data.frame(v1=rnorm(6), v2=runif(6), v3=rbinom(6, 1, .33), row

Maxima: how to replace common subexpressions with symbols

由 血红的双手。 提交于 2019-12-09 06:31:29
问题 Suppose I have an expression like (actually mine is much more complex, thousands of characters) expr:a+b*c+b*c*d; and I want to replace an internal sub-expression with a symbol (useful to avoid recomputation of common subexpressions), say k in place of b*c : subst(b*c=k,expr); returns k+b*c*d+a How I can make Maxima calculate the "right" substitution so to return (apart from obviuos simplification, here) k+k*d+a ? 回答1: Take a look at let and letsimp . E.g.: (%i2) expr : a + b*c + b*c*d; (%o2)

How to insert copyright, trademark, service mark, etc. into WPF textbox when font doesn't support symbols

由 五迷三道 提交于 2019-12-08 19:36:00
问题 We have a WPF application that displays text containing the various corporate symbols; such as trademark, registered trademark, copyright, and service mark. The database has some fields that include the standard corporate symbols. Initially, the data was marked as follows: Example Corp(TM) or Example Plan (SM) We can easily change the placeholders to their respective Unicode equivalents; and actually have in most cases. The problem we have is that the font used by the application doesn't

.NET Go To Implementation of a NuGet package

由 只谈情不闲聊 提交于 2019-12-08 18:46:50
问题 Is anyone aware of a method/tool that would allow me to browse the implementation of a method/type that comes from a NuGet package (by having the original PDBs or a URL of where to get them). I am aware of SourceLink, and I am, in fact, using it. However, source linking is a debugger feature that allows it to download source code while debugging. I need to be able to browse my source code without debugging. (Say by hitting F12 on some method). Weirdly, SourceLink downloads a copy of the

Why do applications compiled by GCC always contain the _mcount symbol?

由 北慕城南 提交于 2019-12-08 17:38:06
问题 Libraries don't always contain the _mcount symbol, but applications do (you can verify this with gobjdump or the nm utility). I've read that _mcount is used to implement profiling, but the symbol is present even when profiling is disabled and optimization is enabled (-O2). Does it serve some other additional purpose? Update: I am on Solaris, so this is the Solaris linker combined with GCC, I'm not sure if that makes a difference or not. The GCC version is 4.2.2. This happens even if I compile

Linker Command Failed with exit code 1: duplicate symbol

由 ≡放荡痞女 提交于 2019-12-08 15:31:54
问题 ld: duplicate symbol _velocityX in \ /Users/Student/Library/Developer/Xcode/DerivedData/finalproject-ffzevekmatxvhrgisgeleoijyllr/Build/Intermediates/finalproject.build/Debug-iphonesimulator/finalproject.build/Objects-normal/i386/Level2ViewController.o \ and \ /Users/Student/Library/Developer/Xcode/DerivedData/finalproject-ffzevekmatxvhrgisgeleoijyllr/Build/Intermediates/finalproject.build/Debug-iphonesimulator/finalproject.build/Objects-normal/i386/Level1ViewController.o \ for architecture

Mysql query LIKE search and using strings with symbols

由 喜夏-厌秋 提交于 2019-12-08 09:03:24
问题 My problem is having symbols used in the search query. I want users to be able to use symbols without being a problem, but the LIKE function in mysql seems to not be the solution so I need some help. EXAMPLE: If someone searches for "Blue's car" and "Blues car" is in the database, this query will return with 0 results. OR viseversa, if someone searches for "Blues car" and "Blue's car" is in the database, this query will return with 0 results as well. This is an example of what I'm currently

Using Unicode Character 'ELEMENT OF' (U+2208) in Notepad++

由 ≯℡__Kan透↙ 提交于 2019-12-08 07:34:09
问题 I'm trying to use Unicode Character 'ELEMENT OF' (U+2208) in notepad++ As seen here --> http://www.fileformat.info/info/unicode/char/2208/index.htm It should be the symbol much like a E and then there's another one munch like a E with s / through it to denote "not a element of" The issue I have is that using Alt+2208 creates 'á'. Copying it form a source such as a webpage and pasting it over displays a '2' Is there anyway to use special characters such as the one above? Trying to make notes

Java Error: cannot find symbol yet the variables are declared?

由 喜夏-厌秋 提交于 2019-12-08 07:24:40
问题 import java.util.Scanner; public class Assignment1Q3 { public static void main(String[] args) { Scanner in = new Scanner(System.in); System.out.print("Please enter the first time: "); int fTime = in.nextInt(); System.out.print("Please enter second time: "); int lTime = in.nextInt(); int tDifference = Math.abs(fTime - lTime); String strTDiff = String.valueOf(tDifference); int length = strTDiff.length(); if (length == 4) { String hours = strTDiff.substring(0, 2); String minutes = strTDiff
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