xcode 8 beta 3: Expected ‘,’ joining parts of a multi-clause condition
It seems this feature has been included: 0099-conditionclauses.md Try this: if let errorValue = error, errorValue.code == ErrorNotExist { }
conditional
How do you set a conditional in python based on datatypes?
How about, if isinstance(x, int): but a cleaner way would simply be sum(z for z in y if isinstance(z, int))
Python, doing conditional imports the right way
Put your lines into a_finder.py: if OldVersion: from my.package.location.A import A else: from new.package.location.A import A Then in your product code: from a_finder import A and you will get the proper A.
Too many if statements
You could possibly use a dictionary. Dictionaries store references, which means functions are perfectly viable to use, like so: operationFuncs = { Operation.START: strategy_objects.StartObject Operation.STOP: strategy_objects.StopObject Operation.STATUS: strategy_objects.StatusObject (…) } It’s good to have a default operation just in case, so when you run it use a try except and handle the exception (ie. the … Read more
Detecting Vowels vs Consonants In Python [duplicate]
Change: if first == “a” or “e” or “i” or “o” or “u”: to: if first in (‘a’, ‘e’, ‘i’, ‘o’, ‘u’): #or `if first in ‘aeiou’` first == “a” or “e” or “i” or “o” or “u” is always True because it is evaluated as (first == “a”) or (“e”) or (“i”) or (“o”) … Read more
Conditional build based on environment using Webpack
You can use the define plugin. I use it by doing something as simple as this in your webpack build file where env is the path to a file that exports an object of settings: // Webpack build config plugins: [ new webpack.DefinePlugin({ ENV: require(path.join(__dirname, ‘./path-to-env-files/’, env)) }) ] // Settings file located at `path-to-env-files/dev.js` … Read more
If-less programming (basically without conditionals) [closed]
There are some resources on the Anti-IF Campaign site, such as this article. I believe it’s a matter of degree. Conditionals aren’t always bad, but they can be (and frequently are) abused. Additional thoughts (one day later) Refactoring: Improving the Design of Existing Code is a good reference on this subject (and many others). It … Read more
conditional include in linq to entities?
This should do the trick: using (TestEntities db = new TestEntities()) { var query = from d in db.Dealership select new { Dealer = d, Parts = d.Part.Where ( p => p.Price < 100.0 && p.Supplier.Country == “Brazil” ), Suppliers = d.Part.Select(p => p.Supplier) }; var dealers = query.ToArray().Select(o => o.Dealer); foreach (var dealer in … Read more
Using conditional to generate new column in pandas dataframe
You can define a function which returns your different states “Full”, “Partial”, “Empty”, etc and then use df.apply to apply the function to each row. Note that you have to pass the keyword argument axis=1 to ensure that it applies the function to rows. import pandas as pd def alert(row): if row[‘used’] == 1.0: return … Read more
Declaring and initializing a variable in a Conditional or Control statement in C++
It is allowed to declare a variable in the control part of a nested block, but in the case of if and while, the variable must be initialized to a numeric or boolean value that will be interpreted as the condition. It cannot be included in a more complex expression! In the particular case you … Read more