Month: October 2022

[Solved] Why do we structure else-if as such? [duplicate]

by

The reason one would prefer one style over the other is to ensure either the presence or lack of mutual exclusion when testing the conditions. If it is the case that Condition B, C, or D are not mutually exclusive with one another, then… …in the first scenario, only Condition B would fire, due to … Read more

[Solved] Find All Possible Fixed Size String Python

by

You can use itertools.product for this. It returns a generator of sequences of fixed length. As you order your strings first by length and then lexicographically, you may use something like this import itertools for l in range(1, 5): for seq in itertools.product(“abc”, repeat=l): print(“”.join(seq)) 3 solved Find All Possible Fixed Size String Python

[Solved] Changing the if statement into a while statement

by

For example int A=1; if(A==1){}; is similar to int A=1 while(A!=1). As already mentioned, your loop is breaking. The above statement is also incorrect. int a = 1; if(a == 1) {} //this is true, and will happen once BUT int a = 1; while(a != 1) {} //false on entry, skip loop ( never … Read more

[Solved] Not able to figure out the logical error in my code

by

Generally, the logic of your code is OK except a return value mistake in the empty() function. In the empty(), it should return 1 while stack is empty. int empty(){ if(top==-1) return(0); <– !!! here should return 1 } Otherwise, it will go into the while loop at while(precedence(value)<=precedence(stack[top])&&!empty()) even when stack is empty. And … Read more

[Solved] sum numeric values in a multidimentional array

by

Just: var scores = [{ “firstName”: “John”, “value”: 89 }, { “firstName”: “Peter”, “value”: 151 }, { “firstName”: “Anna”, “value”: 200 }, { “firstName”: “Peter”, “value”: 22 }, { “firstName”: “Anna”, “value”: 60 }]; var names = {}; var new_arr = []; scores.forEach(function(entry) { if (names.hasOwnProperty(entry.firstName)) { new_arr[names[entry.firstName]].value += entry.value; } else { names[entry.firstName] = … Read more

[Solved] Xcode iPhone app runs and crashes immediately

by

Your project is too small to even try all debugging tools in the armor. If I were you I would start with these following steps to eliminate the root cause and investigate into the issue. a) Try creating a new sample project with same steps that you did in current project and try running it. … Read more

[Solved] applying onehotencoder on numpy array

by

Don’t use a new OneHotEncoder on test_data, use the first one, and only use transform() on it. Do this: test_data = onehotencoder_1.transform(test_data).toarray() Never use fit() (or fit_transform()) on testing data. The different number of columns are entirely possible because it may happen that test data dont contain some categories which are present in train data. … Read more

[Solved] How to connect a seconds timer to a minutes timer in Swift? [closed]

by

I would not use separate timers. Have a seconds timer that fires once a second. It sounds like you want a count-down timer. So… Record the time when the timer starts using code like this: let secondsToEnd = 60*5 let startInterval = NSDate.timeIntervalSinceReferenceDate() let endInterval = startInterval + Double(secondsToEnd) Then in your timer code: let … Read more

[Solved] Perl: string manipulation – surrounding a word with a character ‘@’

by

Whenever you need some reasonably common matching problem resolve in Perl, you should always first check the Regexp::Common family on CPAN. In this case: Regexp::Common::Email::Address. From POD Synopsys: use Regexp::Common qw[Email::Address]; use Email::Address; while (<>) { my (@found) = /($RE{Email}{Address})/g; my (@addrs) = map $_->address, Email::Address->parse(“@found”); print “X-Addresses: “, join(“, “, @addrs), “\n”; } 1 … Read more

[Solved] Can not show map when use google map api v2?

by

Create debugging API key and Release API key. Step 1: In Commend Prompt Now locate to jdk in C drive(Considering for windows and assigning C drive) C:\Program Files\Java\jdk1.7.0\bin>keytool -list -v -keystore E:\A.keystore -alias A So it will create SHA-1 finger print. A.keystore is an Keystore, for debugging this file found in C:\Users\User\.android file name is … Read more