warnings

问题 When I type warnings() to console, I get back Warning message: In fread(my_directory, ... : C function strtod() returned ERANGE for one or more fields. The first was string input '4.40589099726375E-309'. It was read using (double)strtold() as numeric However when I type as.character(warnings()) , I get: [1] "fread(my_directory)" My objective is to get the actual message displayed in warning() into a character string, so that I can pass it to the logwarn function in the logging package.

问题 As many other people, I'm having troubles running a model which uses glmer function from package lme4. Here is my model: model = glmer(depvar ~ variety*cover+amplitude+time+ (1|pp) + (1|stim), data = datafile, family=poisson) And here is the warning I get: Warning message: In checkConv(attr(opt, "derivs"), opt$par, ctrl = control$checkConv, : Model failed to converge with max|grad| = 0.00606839 (tol = 0.001, component 1) I read at this link that if I add control=glmerControl(optimizer="bobyqa

问题 As many other people, I'm having troubles running a model which uses glmer function from package lme4. Here is my model: model = glmer(depvar ~ variety*cover+amplitude+time+ (1|pp) + (1|stim), data = datafile, family=poisson) And here is the warning I get: Warning message: In checkConv(attr(opt, "derivs"), opt$par, ctrl = control$checkConv, : Model failed to converge with max|grad| = 0.00606839 (tol = 0.001, component 1) I read at this link that if I add control=glmerControl(optimizer="bobyqa

问题 As many other people, I'm having troubles running a model which uses glmer function from package lme4. Here is my model: model = glmer(depvar ~ variety*cover+amplitude+time+ (1|pp) + (1|stim), data = datafile, family=poisson) And here is the warning I get: Warning message: In checkConv(attr(opt, "derivs"), opt$par, ctrl = control$checkConv, : Model failed to converge with max|grad| = 0.00606839 (tol = 0.001, component 1) I read at this link that if I add control=glmerControl(optimizer="bobyqa

问题 As many other people, I'm having troubles running a model which uses glmer function from package lme4. Here is my model: model = glmer(depvar ~ variety*cover+amplitude+time+ (1|pp) + (1|stim), data = datafile, family=poisson) And here is the warning I get: Warning message: In checkConv(attr(opt, "derivs"), opt$par, ctrl = control$checkConv, : Model failed to converge with max|grad| = 0.00606839 (tol = 0.001, component 1) I read at this link that if I add control=glmerControl(optimizer="bobyqa

问题 I am seeking for a way to suppress all possible warnings that i may get with Gcc with pragma directives. I had made some guard macros that help me silence 3rd party headers from warnings, and for now they work like charm for msvc and clang. I am still missing the correct way to use Gcc diagnostic pragmas in order to suppress every warning in a section. Let me give you some examples: In msvc we can do this: #pragma warning(push, 0) // Code that produces warnings... #pragma warning(pop) And in

问题 I am seeking for a way to suppress all possible warnings that i may get with Gcc with pragma directives. I had made some guard macros that help me silence 3rd party headers from warnings, and for now they work like charm for msvc and clang. I am still missing the correct way to use Gcc diagnostic pragmas in order to suppress every warning in a section. Let me give you some examples: In msvc we can do this: #pragma warning(push, 0) // Code that produces warnings... #pragma warning(pop) And in

问题 This question already has an answer here : mysqli_fetch_assoc() expects parameter / Call to a member function bind_param() errors. How to get the actual mysql error and fix it? (1 answer) Closed 2 months ago . I'm running into many problems with a code I've been working on, but this one seems to come up a lot. I'm using the procedural method for coding this site, and I can't seem to find an answer to this question without the mention of OOP's, prepared statements or failed queries. The funny

问题 What is this? This is a number of answers about warnings, errors, and notices you might encounter while programming PHP and have no clue how to fix them. This is also a Community Wiki, so everyone is invited to participate adding to and maintaining this list. Why is this? Questions like "Headers already sent" or "Calling a member of a non-object" pop up frequently on Stack Overflow. The root cause of those questions is always the same. So the answers to those questions typically repeat them

问题 I recently faced a bug in a code like this class C { public: // foo return value depends on C's state // AND each call to foo changes the state. int foo(int arg) /*foo is not const-qualified.*/ {} private: // Some mutable state }; C c; bar(c.foo(42), c.foo(43)) The last call behaved differently on different platforms (which is perfectly legal due to undefined order of argument evaluation), and I fixed the bug. But the rest codebase is large and I would like to spot all other UB of this type.