大约有 40,000 项符合查询结果（耗时：0.0537秒） [XML]
How to force R to use a specified factor level as reference in a regression?
...ommand which is the best solution if you want to change the base level for all analyses on your data (or are willing to live with changing the data).
If you don't want to change the data (this is a one time change, but in the future you want the default behavior again), then you can use a combinati...
How do I run a program with commandline arguments using GDB within a Bash script?
When running a program on GDB, usually, the arguments for the program are given at the run command. Is there a way to run the program using GDB and as well as give arguments within a shell script?
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How can I inspect disappearing element in a browser?
...This will throw a debugger pause before the element disappears, which will allow you to interact with the element in a paused state.
Update Oct 22 2019: with the release of v. 70, it looks like FireFox finally supports this kind of debugging 2 3:
Update Sep 15 2020: Chrome has an "Emulate a focuse...
remove_if equivalent for std::map
...erase(iter);
} else {
++iter;
}
}
What you had originally would increment the iterator twice if you did erase an element from it; you could potentially skip over elements that needed to be erased.
This is a common algorithm I've seen used and documented in many places.
[EDIT]...
How to call methods dynamically based on their name? [duplicate]
How can I call a method dynamically when its name is contained in a string variable? For example:
5 Answers
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Python UTC datetime object's ISO format doesn't include Z (Zulu or Zero offset)
...e objects don't have time zone info by default, and without it, Python actually violates the ISO 8601 specification (if no time zone info is given, assumed to be local time). You can use the pytz package to get some default time zones, or directly subclass tzinfo yourself:
from datetime import date...
Swift: Convert enum value to String?
...sion UIApplicationState { var toString() -> String { /* check self for all diff. cases and return something like "Active" */ }
– DevAndArtist
Mar 25 '16 at 9:31
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How to change color in circular progress bar?
... If I put this color it colors the spinning cutted ring but all of it, so it turns into a full ring so you dont see it moving
– Lucas Zanella
Jun 8 at 2:58
add ...
Javascript reduce() on Object
...
What you actually want in this case are the Object.values. Here is a concise ES6 implementation with that in mind:
const add = {
a: {value:1},
b: {value:2},
c: {value:3}
}
const total = Object.values(add).reduce((t, {value}) =>...
How to escape JSON string?
...r deserializing - rater it is used when you want to create a JSON text manually and you have a C# string and need to gets its proper representation as a text.
– Dror Harari
Dec 30 '14 at 22:50
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