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How to check if string input is a number? [duplicate]

How do I check if a user's string input is a number (e.g. -1 , 0 , 1 , etc.)? 24 Answers ...
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Format timedelta to string

... You can just convert the timedelta to a string with str(). Here's an example: import datetime start = datetime.datetime(2009,2,10,14,00) end = datetime.datetime(2009,2,10,16,00) delta = end-start print(str(delta)) # prints 2:00:00 ...
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Efficient way to return a std::vector in c++

... vector<string> getseq(char * db_file) And if you want to print it on main() you should do it in a loop. int main() { vector<string> str_vec = getseq(argv[1]); for(vector<string>::iterator it = str_vec.beg...
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How to construct a timedelta object from a simple string

I'm writing a function that needs a timedelta input to be passed in as a string. The user must enter something like "32m" or "2h32m", or even "4:13" or "5hr34m56s"... Is there a library or something that has this sort of thing already implemented? ...
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How to convert string representation of list to a list?

I was wondering what the simplest way is to convert a string list like the following to a list : 15 Answers ...
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Improving bulk insert performance in Entity framework [duplicate]

...ction; conn.Open(); Type t = typeof(T); Set(t).ToString(); var objectContext = ((IObjectContextAdapter)this).ObjectContext; var workspace = objectContext.MetadataWorkspace; var mappings = GetMappings(workspace, objectContext.DefaultContainerName, typ...
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How to get the size of a string in Python?

For example, I get a string: 5 Answers 5 ...
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Inversion of Control vs Dependency Injection

...ode will look as below: public class SMSService { public void SendSMS(string mobileNumber, string body) { SendSMSUsingGateway(mobileNumber, body); } private void SendSMSUsingGateway(string mobileNumber, string body) { /*implementation for sending SMS using gatew...
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Implementation difference between Aggregation and Composition in Java

... professors = null; } } public class Professor { private String name; private List<Department> attachedDepartments; public void destroy(){ } public void fire(Department d){ attachedDepartments.remove(d); } } Something around this. EDIT: a...
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What are your favorite extension methods for C#? (codeplex.com/extensionoverflow)

...ongIntegerVariableName == 11) { // do something.... } and if(reallyLongStringVariableName == "string1" || reallyLongStringVariableName == "string2" || reallyLongStringVariableName == "string3") { // do something.... } and if(reallyLongMethodParameterName == SomeEnum.Value1 || ...