![]() Operator+(const QByteArray & a1, const char * a2) ![]() Operator+(const QByteArray & a1, const QByteArray & a2) Operator""_ba(const char * str, size_t size) Operator!=(const char * a1, const QByteArray & a2) Operator!=(const QByteArray & a1, const char * a2) Operator!=(const QByteArray & a1, const QByteArray & a2) Qvsnprintf(char * str, size_t n, const char * fmt, va_list ap) Qstrnlen(const char * str, size_t maxlen) Qstrnicmp(const char * str1, const char * str2, size_t len) Qstrncpy(char * dst, const char * src, size_t len) Qstrncmp(const char * str1, const char * str2, size_t len) Qstricmp(const char * str1, const char * str2) Qstrcmp(const char * str1, const char * str2) Qsnprintf(char * str, size_t n, const char * fmt. QUncompress(const uchar * data, qsizetype nbytes) QCompress(const uchar * data, qsizetype nbytes, int compressionLevel = -1) QCompress(const QByteArray & data, int compressionLevel = -1) QChecksum(QByteArrayView data, Qt::ChecksumType standard = Qt::ChecksumIso3309) Number(double n, char format = 'g', int precision = 6)Įrase_if(QByteArray & ba, Predicate pred) ToUShort(bool * ok = nullptr, int base = 10) constįromBase64(const QByteArray & base64, QByteArray::Base64Options options = Base64Encoding)įromBase64Encoding(QByteArray & base64, QByteArray::Base64Options options = Base64Encoding)įromBase64Encoding(const QByteArray & base64, QByteArray::Base64Options options = Base64Encoding)įromEcmaUint8Array(emscripten::val uint8array)įromPercentEncoding(const QByteArray & input, char percent = '%')įromRawData(const char * data, qsizetype size) ToULongLong(bool * ok = nullptr, int base = 10) const ToULong(bool * ok = nullptr, int base = 10) const ToUInt(bool * ok = nullptr, int base = 10) const ToShort(bool * ok = nullptr, int base = 10) const ToPercentEncoding(const QByteArray & exclude = QByteArray(), const QByteArray & include = QByteArray(), char percent = '%') const ToLongLong(bool * ok = nullptr, int base = 10) const ToLong(bool * ok = nullptr, int base = 10) const ToInt(bool * ok = nullptr, int base = 10) const ToBase64(QByteArray::Base64Options options = Base64Encoding) const SetRawData(const char * data, qsizetype size) SetNum(double n, char format = 'g', int precision = 6) SetNum(float n, char format = 'g', int precision = 6) RightJustified(qsizetype width, char fill = ' ', bool truncate = false) const Replace(QByteArrayView before, QByteArrayView after) Replace(const char * before, qsizetype bsize, const char * after, qsizetype asize) Replace(char before, QByteArrayView after) Replace(qsizetype pos, qsizetype len, const char * after, qsizetype alen) Replace(qsizetype pos, qsizetype len, QByteArrayView after) Mid(qsizetype pos, qsizetype len = -1) const LeftJustified(qsizetype width, char fill = ' ', bool truncate = false) const LastIndexOf(char ch, qsizetype from = -1) const LastIndexOf(QByteArrayView bv, qsizetype from) const Insert(qsizetype i, const char * data, qsizetype len) Insert(qsizetype i, qsizetype count, char ch) Insert(qsizetype i, const QByteArray & data) IndexOf(char ch, qsizetype from = 0) const IndexOf(QByteArrayView bv, qsizetype from = 0) const QByteArray(qsizetype size, Qt::Initialization)Ĭompare(QByteArrayView bv, Qt::CaseSensitivity cs = Qt::CaseSensitive) constĮrase(QByteArray::const_iterator first, QByteArray::const_iterator last) Unless you're worried about maliciously created collisions the chances of a false match are miniscule, and if you are worried about maliciously created collisions you'd want to use a binary compare.QByteArray(const char * data, qsizetype size = -1) We're comparing exactly two files which have the exact same name, size, and occur in the same place in the folder hierarchy. If we're only comparing hash values in a pool of a million files (i.e., looking for duplicates), sure, it's more likely for there to be a collision, but we're not. I also take issue with your claim that CRC-32 isn't acceptable for the vast majority of cases. The reason we do binary comparisons instead of comparing hashes is twofold: 1) There isn't a possibility of a collision, however remote, and 2) we can stop reading the files as soon as a difference is found. I understand your argument, but for a sufficiently large buffer size the difference should be negligible and, as I said, your assumptions are flawed because both of your comparisons comparisons were doing bit-by-bit comparisons, not comparing hashes.
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