Month: September 2022

[Solved] How to cancel action when detect same line in MySQL [closed]

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from my understanding of your question – in your php code you can do something like this <?php $con=mysqli_connect(“localhost”,”my_user”,”my_password”,”my_db”); $sqlSearch = “select everything from <table_name> where <column_name> = <value>;”; $result = mysqli_query($con,$sqlSearch ); if (mysqli_num_rows($result) > 0){ // do nothing } else{ $sqlInsert = “insert into <table_name> (column1,column2…) VALUES(value1,value2…);”; $result = mysqli_query($con,$sqlInsert); } ?> basically, … Read more

[Solved] If I have two columns, how can I select all distinct values of columnA where columnB is never a specific value given that columnA is the same value?

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If I have two columns, how can I select all distinct values of columnA where columnB is never a specific value given that columnA is the same value? solved If I have two columns, how can I select all distinct values of columnA where columnB is never a specific value given that columnA is the … Read more

[Solved] Add border using css ::after [duplicate]

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There’s a lot of different ways you can achieve this effect, each with their own pros and cons (including how different properties affect document flow): Outline with negative offset .box { width: 100px; height: 100px; background-color: red; outline: 2px solid darkred; outline-offset: -7px; } <div class=”box”></div> Border and boxshadow .box { width: 100px; height: 100px; … Read more

[Solved] Using iterator to read input [closed]

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The code compiles because it is valid code. It just doesn’t do anything meaningful. sin_start is not a function, it is a variable of type istream_iterator<int>, where istream_iterator is a template class defined in the <iterator> header file. It is being passed std::cin as a parameter to its constructor, so it knows which stream to … Read more

[Solved] warning C4018: ‘

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length() probably returns size_t or unsigned long and you are comparing it with signed long. Change long lDelFront = 0, lDelBack = 0; to size_t lDelFront = 0; size_t lDelBack = 0; to avoid signed/unsigned comparison 1 solved warning C4018: ‘

[Solved] Using function members in functionals in c++ [closed]

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First of all continue is an already occupied keyword, so, better rename your function. The continue statement shall occur only in an iteration-statement and causes control to pass to the loop-continuation portion of the smallest enclosing iteration-statement, that is, to the end of the loop. In our case, you trying to use a non-static member … Read more

[Solved] C++ Sha1 issue with using char *

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char *string1 = strdup(data.c_str()); // do stuff with string1 free(string1); SHA1((unsigned char*)&string1, strlen(string1), (unsigned char*)&digest); There’s your error. You created string1 You used it You freed it You used it again Don’t free what you still need to use. In addition to that: SHA1((unsigned char*)&string1, strlen(string1), (unsigned char*)&digest); What you’re doing here is passing the … Read more

[Solved] jQuery: onclick method for every buttons with id starting with [duplicate]

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Method 1: $(‘[id^=”del”]’).click(function() { //ID begins with “del” //code here }); //or $(document).on(‘click’, ‘[id^=”del”]’, function(e) { //code here }); Method 2: Add a common class to all your buttons: $(‘.myButton’).click(function(){/*code..*/}); solved jQuery: onclick method for every buttons with id starting with [duplicate]