How to use the general method of Qt

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Function name / / determine whether it is an IP address static bool isIP (const QString & ip); / / determine whether it is a MAC address static bool isMac (const QString & mac); / / determine whether it is a legitimate phone number static bool isTel (const QString & tel); / / determine whether it is a legitimate email address static bool isEmail (const QString & email) / / hexadecimal string to decimal static int strHexToDecimal (const QString & strHex); / / decimal string to decimal static int strDecimalToDecimal (const QString & strDecimal); / / 2 string to decimal static int strBinToDecimal (const QString & strBin); / / hexadecimal string to binary string static QString strHexToStrBin (const QString & strHex) / / 10 to binary string one byte static QString decimalToStrBin1 (int decimal); / 10 to binary string two bytes static QString decimalToStrBin2 (int decimal); / 10 to hexadecimal string, zero. Static QString decimalToStrHex (int decimal); function body bool QUIHelper::isIP (const QString & ip) {QRegExp RegExp ("((2 [0-4]\ d | 25 [0-5] | [01]?\\ d\\ d?)) {3} (2 [0-4]\\ d | 25 [0-5] | [01]?\\ d\\ d?)); return RegExp.exactMatch (ip) } bool QUIHelper::isMac (const QString & mac) {QRegExp RegExp ("^ [A-F0-9] {2} (- [A-F0-9] {2}) {5} $"); return RegExp.exactMatch (mac);} bool QUIHelper::isTel (const QString & tel) {if (tel.length ()! = 11) {return false } if (! tel.startsWith ("13") & &! tel.startsWith ("14") & &! tel.startsWith ("15") & &! tel.startsWith ("18") {return false;} return true;} bool QUIHelper::isEmail (const QString & email) {if (! email.contains ("@") |! email.contains (".com")) {return false;} return true } int QUIHelper::strHexToDecimal (const QString & strHex) {bool ok; return strHex.toInt (& ok, 16);} int QUIHelper::strDecimalToDecimal (const QString & strDecimal) {bool ok; return strDecimal.toInt (& ok, 10);} int QUIHelper::strBinToDecimal (const QString & strBin) {bool ok; return strBin.toInt (& ok, 2);} QString QUIHelper::strHexToStrBin (const QString & strHex) {uchar decimal = strHexToDecimal (strHex); QString bin = QString::number (decimal, 2) Uchar len = bin.length (); if (len < 8) {for (int I = 0; I < 8-len; iTunes +) {bin = "0" + bin;}} return bin;} QString QUIHelper::decimalToStrBin1 (int decimal) {QString bin = QString::number (decimal, 2); uchar len = bin.length (); if (len