z | z - jump around - Z User Commands Z | Regex library

 by   rupa Shell Version: v1.9 License: WTFPL

kandi X-RAY | z Summary

kandi X-RAY | z Summary

z is a Shell library typically used in Utilities, Regex applications. z has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

Z(1) User Commands Z(1). NAME z - jump around. SYNOPSIS z [-chlrtx] [regex1 regex2 ... regexn]. DESCRIPTION Tracks your most used directories, based on 'frecency'. OPTIONS -c restrict matches to subdirectories of the current directory. EXAMPLES z foo cd to most frecent dir matching foo.

            kandi-support Support

              z has a medium active ecosystem.
              It has 15265 star(s) with 1161 fork(s). There are 178 watchers for this library.
              It had no major release in the last 12 months.
              There are 80 open issues and 147 have been closed. On average issues are closed in 401 days. There are 23 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of z is v1.9

            kandi-Quality Quality

              z has 0 bugs and 0 code smells.

            kandi-Security Security

              z has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              z code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              z is licensed under the WTFPL License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              z releases are available to install and integrate.
              Installation instructions are not available. Examples and code snippets are available.

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            z Key Features

            No Key Features are available at this moment for z.

            z Examples and Code Snippets

            Calculate the z - function
            pythondot img1Lines of Code : 37dot img1License : Permissive (MIT License)
            copy iconCopy
            def z_function(input_str: str) -> list[int]:
                For the given string this function computes value for each index,
                which represents the maximal length substring starting from the index
                and is the same as the prefix of the same size  
            Return the angle of z .
            pythondot img2Lines of Code : 13dot img2License : Non-SPDX (Apache License 2.0)
            copy iconCopy
            def angle(z, deg=False):  # pylint: disable=missing-function-docstring
              def f(x):
                if x.dtype in _tf_float_types:
                  # Workaround for b/147515503
                  return array_ops.where_v2(x < 0, np.pi, 0)
                  return math_ops.angle(x)
            Calculate z score .
            javadot img3Lines of Code : 5dot img3License : Permissive (MIT License)
            copy iconCopy
            public static double zScore(double num, double mean, double stdDev)
            		double z = (num - mean)/stdDev;
            		return z;

            Community Discussions


            uploaded an APK which has an activity,activity alias,service or broadcast receiver with intentfilter, but without 'android : exported' property set
            Asked 2022-Feb-03 at 10:56

            I'm having an issue when i'm uploading app bundle to the play console that You uploaded an APK or Android App Bundle which has an activity, activity alias, service or broadcast receiver with intent filter, but without 'android:exported' property set. This file can't be installed on Android 12 or higher. but my manifest file includes the property.

            Manifest file



            Answered 2022-Jan-12 at 23:56

            I face the same Issue but i solved by writing android:exported="true" in activity bellow the android:name=".MainActivity" image shown

            Source https://stackoverflow.com/questions/70684516


            Bubble sort slower with -O3 than -O2 with GCC
            Asked 2022-Jan-21 at 02:41

            I made a bubble sort implementation in C, and was testing its performance when I noticed that the -O3 flag made it run even slower than no flags at all! Meanwhile -O2 was making it run a lot faster as expected.

            Without optimisations:



            Answered 2021-Oct-27 at 19:53

            It looks like GCC's naïveté about store-forwarding stalls is hurting its auto-vectorization strategy here. See also Store forwarding by example for some practical benchmarks on Intel with hardware performance counters, and What are the costs of failed store-to-load forwarding on x86? Also Agner Fog's x86 optimization guides.

            (gcc -O3 enables -ftree-vectorize and a few other options not included by -O2, e.g. if-conversion to branchless cmov, which is another way -O3 can hurt with data patterns GCC didn't expect. By comparison, Clang enables auto-vectorization even at -O2, although some of its optimizations are still only on at -O3.)

            It's doing 64-bit loads (and branching to store or not) on pairs of ints. This means, if we swapped the last iteration, this load comes half from that store, half from fresh memory, so we get a store-forwarding stall after every swap. But bubble sort often has long chains of swapping every iteration as an element bubbles far, so this is really bad.

            (Bubble sort is bad in general, especially if implemented naively without keeping the previous iteration's second element around in a register. It can be interesting to analyze the asm details of exactly why it sucks, so it is fair enough for wanting to try.)

            Anyway, this is pretty clearly an anti-optimization you should report on GCC Bugzilla with the "missed-optimization" keyword. Scalar loads are cheap, and store-forwarding stalls are costly. (Can modern x86 implementations store-forward from more than one prior store? no, nor can microarchitectures other than in-order Atom efficiently load when it partially overlaps with one previous store, and partially from data that has to come from the L1d cache.)

            Even better would be to keep buf[x+1] in a register and use it as buf[x] in the next iteration, avoiding a store and load. (Like good hand-written asm bubble sort examples, a few of which exist on Stack Overflow.)

            If it wasn't for the store-forwarding stalls (which AFAIK GCC doesn't know about in its cost model), this strategy might be about break-even. SSE 4.1 for a branchless pmind / pmaxd comparator might be interesting, but that would mean always storing and the C source doesn't do that.

            If this strategy of double-width load had any merit, it would be better implemented with pure integer on a 64-bit machine like x86-64, where you can operate on just the low 32 bits with garbage (or valuable data) in the upper half. E.g.,

            Source https://stackoverflow.com/questions/69503317


            Why does iteration over an inclusive range generate longer assembly in Rust?
            Asked 2022-Jan-15 at 11:19

            These two loops are equivalent in C++ and Rust:



            Answered 2022-Jan-12 at 10:20

            Overflow in the iterator state.

            The C++ version will loop forever when given a large enough input:

            Source https://stackoverflow.com/questions/70672533


            Union's default constructor is implicitly deleted
            Asked 2021-Dec-20 at 22:48

            The following code:



            Answered 2021-Dec-20 at 22:26

            It's all slightly mysterious. gcc behaves the same as clang.

            The standard has this to say (emphasis mine):

            Absent default member initializers, if any non-static data member of a union has a non-trivial default constructor, copy constructor, move constructor, copy assignment operator, move assignment operator, or destructor, the corresponding member function of the union must be user-provided or it will be implicitly deleted for the union.

            But I think the wording is a bit wooly here. I think what they actually mean is that you must provide an initialiser for the member that has (in your example) a non-trivial constructor, like so:

            Source https://stackoverflow.com/questions/70428563


            Can one delete a function returning an incomplete type in C++?
            Asked 2021-Dec-19 at 10:56

            In the following example function f() returning incomplete type A is marked as deleted:



            Answered 2021-Dec-19 at 10:26

            Clang is wrong.


            2 The type of a parameter or the return type for a function definition shall not be a (possibly cv-qualified) class type that is incomplete or abstract within the function body unless the function is deleted ([dcl.fct.def.delete]).

            That's pretty clear I think. A deleted definition allows for an incomplete class type. It's not like the function can actually be called in a well-formed program, or the body is actually using the incomplete type in some way. The function is a placeholder to signify an invalid result to overload resolution.

            Granted, the parameter types are more interesting in the case of actual overload resolution (and the return type can be anything), but there is no reason to restrict the return type into being complete here either.

            Source https://stackoverflow.com/questions/70410542


            xcrun: error: SDK "iphoneos" cannot be located
            Asked 2021-Dec-15 at 20:35

            I'm not experienced so I can't really pinpoint what is the problem. Thanks for the help.

            I cloned this repo: https://github.com/flatlogic/react-native-starter.git

            And was trying to follow the steps below:

            Clone the repo

            git clone https://github.com/flatlogic/react-native-starter.git

            Navigate to clonned folder and Install dependencies

            cd react-native-starter && yarn install

            Install Pods

            cd ios && pod install

            When I got to the pod install I'm getting that error.



            Answered 2021-Jul-28 at 18:31

            I think your pod install working fine and has done its job. You need to set up iPhone SDK on your mac then try to run cd ../ && react-native run-ios.

            Follow this guide : React Native Environment set up on Mac OS with Xcode and Android Studio

            Source https://stackoverflow.com/questions/68565356


            Why can't a const mutable lambda with an auto& parameter be invoked?
            Asked 2021-Dec-10 at 19:36
            int main()
                auto f1 = [](auto&) mutable {};
                static_assert(std::is_invocable_v); // ok
                auto const f2 = [](auto&) {};
                static_assert(std::is_invocable_v); // ok
                auto const f3 = [](auto&) mutable {};
                static_assert(std::is_invocable_v); // failed


            Answered 2021-Dec-10 at 19:09

            You get an error for this for the very same reason:

            Source https://stackoverflow.com/questions/70309251


            Passing a C-style array to `span`
            Asked 2021-Nov-27 at 02:27

            C++20 introduced std::span, which is a view-like object that can take in a continuous sequence, such as a C-style array, std::array, and std::vector. A common problem with a C-style array is it will decay to a pointer when passing to a function. Such a problem can be solved by using std::span:



            Answered 2021-Nov-27 at 02:27

            The question is not why this fails for int[], but why it works for all the other types! Unfortunately, you have fallen prey to ADL which is actually calling std::size instead of the size function you have written. This is because all overloads of your function fail, and so it looks in the namespace of the first argument for a matching function, where it finds std::size. Rerun your program with the function renamed to something else:

            Source https://stackoverflow.com/questions/70117922


            Must `throw nullptr` be caught as a pointer, regardless of pointer type?
            Asked 2021-Nov-03 at 18:23

            The following program throws nullptr and then catches the exception as int*:



            Answered 2021-Nov-03 at 18:21

            Looks like a bug in Visual Studio, according to the standard [except.handle]:

            A handler is a match for an exception object of type E if


            • the handler is of type cv T or const T& where T is a pointer or pointer-to->member type and E is std​::​nullptr_t.

            Source https://stackoverflow.com/questions/69822870


            Function default argument value depending on argument name in C++
            Asked 2021-Oct-06 at 22:12

            If one defines a new variable in C++, then the name of the variable can be used in the initialization expression, for example:



            Answered 2021-Oct-06 at 22:12

            According to the C++17 standard (11.3.6 Default arguments)

            9 A default argument is evaluated each time the function is called with no argument for the corresponding parameter. A parameter shall not appear as a potentially-evaluated expression in a default argument. Parameters of a function declared before a default argument are in scope and can hide namespace and class member name

            It provides the following example:

            Source https://stackoverflow.com/questions/69461415

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


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