Delete hasPrefix and hasSuffix from the codebase

These now have equivalents in the standard lib in C++20. This change was
performed with a custom clang-tidy check which I will submit later.
Executed like so:

ninja -C build && run-clang-tidy -checks='-*,nix-*' -load=build/libnix-clang-tidy.so -p .. -fix ../tests | tee -a clang-tidy-result

Change-Id: I62679e315ff9e7ce72a40b91b79c3e9fc01b27e9

1 files changed, 3 insertions, 3 deletions

diff --git a/src/libutil/cgroup.cc b/src/libutil/cgroup.cc
index a008481ca..9320d2371 100644
--- a/src/libutil/cgroup.cc
+++ b/src/libutil/cgroup.cc
@@ -41,7 +41,7 @@ std::map<std::string, std::string> getCgroups(const Path & cgroupFile)
         if (!std::regex_match(line, match, regex))
             throw Error("invalid line '%s' in '%s'", line, cgroupFile);
 
-        std::string name = hasPrefix(std::string(match[2]), "name=") ? std::string(match[2], 5) : match[2];
+        std::string name = std::string(match[2]).starts_with("name=") ? std::string(match[2], 5) : match[2];
         cgroups.insert_or_assign(name, match[3]);
     }
 
@@ -117,13 +117,13 @@ static CgroupStats destroyCgroup(const Path & cgroup, bool returnStats)
         if (pathExists(cpustatPath)) {
             for (auto & line : tokenizeString<std::vector<std::string>>(readFile(cpustatPath), "\n")) {
                 std::string_view userPrefix = "user_usec ";
-                if (hasPrefix(line, userPrefix)) {
+                if (line.starts_with(userPrefix)) {
                     auto n = string2Int<uint64_t>(line.substr(userPrefix.size()));
                     if (n) stats.cpuUser = std::chrono::microseconds(*n);
                 }
 
                 std::string_view systemPrefix = "system_usec ";
-                if (hasPrefix(line, systemPrefix)) {
+                if (line.starts_with(systemPrefix)) {
                     auto n = string2Int<uint64_t>(line.substr(systemPrefix.size()));
                     if (n) stats.cpuSystem = std::chrono::microseconds(*n);
                 }