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How can I add new keys to a dictionary?
... you want to set multiple values at the same time, as long as the keys are strings (since kwargs are converted to strings). dict.update can also take another dictionary, but I personally prefer not to explicitly create a new dictionary in order to update another one.
– bgusach
...
Take the content of a list and append it to another list
... are met
list1.append(line)
if any(True for line in list1 if "string" in line):
list2.extend(list1)
del list1
....
The (True for line in list1 if "string" in line) iterates over list and emits True whenever a match is found. any() uses short-circuit evaluation to retu...
RandomForestClassifier vs ExtraTreesClassifier in scikit learn
Can anyone explain the difference between the RandomForestClassifier and ExtraTreesClassifier in scikit learn. I've spent a good bit of time reading the paper:
...
Quick Sort Vs Merge Sort [duplicate]
...deed. Both explanation and simple implementations.
– extraneon
Apr 8 '10 at 8:05
1
@Stephan Egger...
SQL: IF clause within WHERE clause
... Table
WHERE OrderNumber LIKE '%' + @OrderNumber
END
3) Using a long string, compose your SQL statement conditionally, and then use EXEC
The 3rd approach is hideous, but it's almost the only think that works if you have a number of variable conditions like that.
...
What's the need of array with zero elements?
...u would use it like this:
struct bts_action *var = kmalloc(sizeof(*var) + extra, GFP_KERNEL);
This used to be not standard and was considered a hack (as Aniket said), but it was standardized in C99. The standard format for it now is:
struct bts_action {
u16 type;
u16 size;
u8 data...
How do CDI and EJB compare? interact?
... let me explain "Dependent" with example:
class Specification {
private String color;
private String model;
//- Getter and Setter
}
The Specification class is CDI, since it is not annotated with Ejb scopes and also this has to initialized by your code not EE framework.
One point to be note...
使用Activity启动器组件 · App Inventor 2 中文网
...性 DataType 和 DataURI 在 App Inventor 中设置这些。 还有一个 Extras 属性，它采用键和值的列表并指定相应键的属性值。 你必须设置的特定值取决于你要启动的活动。
这里有些例子。
警告：这些示例中的值取决于应用程序用户设备...
How to import an excel file in to a MySQL database
... to import spreadsheet data into a MySQL database that doesn't rely on any extra software. Let's assume you want to import your Excel table into the sales table of a MySQL database named mydatabase.
Select the relevant cells:
Paste into Mr. Data Converter and select the output as MySQL:
Change...
Error-Handling in Swift-Language
...in AFNetworking:
var sessionManager = AFHTTPSessionManager(baseURL: NSURL(string: "yavin4.yavin.planets"))
sessionManager.HEAD("/api/destoryDeathStar", parameters: xwingSquad,
success: { (NSURLSessionDataTask) -> Void in
println("Success")
},
failure:{ (NSURLSessionDataTask, ...