大约有 13,922 项符合查询结果(耗时:0.0183秒) [XML]

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How to convert an int to string in C?

...se itoa() function to convert your integer value to a string. Here is an example: int num = 321; char snum[5]; // convert 123 to string [buf] itoa(num, snum, 10); // print our string printf("%s\n", snum); If you want to output your structure into a file there is no need to convert any value ...
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Change size of axes title and labels in ggplot2

... You can change axis text and label size with arguments axis.text= and axis.title= in function theme(). If you need, for example, change only x axis title size, then use axis.title.x=. g+theme(axis.text=element_text(size=12), axis.ti...
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Get program execution time in the shell

I want to execute something in a linux shell under a few different conditions, and be able to output the execution time of each execution. ...
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Reading Excel files from C#

Is there a free or open source library to read Excel files (.xls) directly from a C# program? 32 Answers ...
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Struct Constructor in C++?

...ic by default in structs. So structs can have constructors, and the syntax is the same as for classes. share | improve this answer | follow | ...
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JavaScript function to add X months to a date

I’m looking for the easiest, cleanest way to add X months to a JavaScript date. 18 Answers ...
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How to update only one field using Entity Framework?

... Ladislav's answer updated to use DbContext (introduced in EF 4.1): public void ChangePassword(int userId, string password) { var user = new User() { Id = userId, Password = password }; using (var db = new MyEfContextName()) { db.Users.Attach(user); d...
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What is aria-label and how should I use it?

...Your name</label> <input id="fmUserName"> The <label> explicitly tells the user to type their name into the input box where id="fmUserName". aria-label does much the same thing, but it's for those cases where it isn't practical or desirable to have a label on screen. Take the MD...
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In-place type conversion of a NumPy array

...different dtype, and then copy in-place into the view: import numpy as np x = np.arange(10, dtype='int32') y = x.view('float32') y[:] = x print(y) yields array([ 0., 1., 2., 3., 4., 5., 6., 7., 8., 9.], dtype=float32) To show the conversion was in-place, note that copying from x to y...
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Why do assignment statements return a value?

...ldn’t return any value. Your understanding is 100% incorrect. Can you explain why you believe this false thing? What is the reasoning behind allowing assignment statements to return a value? First off, assignment statements do not produce a value. Assignment expressions produce a value. An...