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Rails: How to change the text on the submit button in a Rails Form
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– Grant Birchmeier
Mar 15 '13 at 18:14
4
This didn't work for me -- I had to do <%= f.submit...
Is there a way to automatically generate getters and setters in Eclipse?
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358
Bring up the context menu (i.e. right click) in the source code window of the desired class. The...
How to save an image locally using Python whose URL address I already know?
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28
Python 3: import urllib.request and urllib.request.urlretrieve(), accordingly.
– SergO
Jan 22 '16 at ...
How do I compile and run a program in Java on my Mac?
...ring args[]) {
double amountInAccount;
amountInAccount = 128.57;
System.out.print("You earned $");
System.out.print(amountInAccount);
System.out.println(" at work today.");
}
}
Save the code as Paycheck.java
Go to terminal and type cd Desktop
Type javac...
C fopen vs open
...fgetc, fscanf, fread) , will always read the whole size of the buffer (4K, 8K or whatever you set). By using the direct I/O you can avoid that. In that case it's even better to use pread instead of a seek/read pair (1 syscall instead of 2).
– Patrick Schlüter
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Does the ternary operator exist in R?
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edited Jan 9 '12 at 18:13
answered Jan 9 '12 at 14:52
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Why do we need virtual functions in C++?
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2785
Here is how I understood not just what virtual functions are, but why they're required:
Let's ...
Use of 'prototype' vs. 'this' in JavaScript?
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edited Mar 28 '19 at 21:56
community wiki
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Forward declaration of nested types/classes in C++
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Marsh RayMarsh Ray
2,6571818 silver badges1919 bronze badges
16
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Why is the shovel operator (
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Proof:
a = 'foo'
a.object_id #=> 2154889340
a << 'bar'
a.object_id #=> 2154889340
a += 'quux'
a.object_id #=> 2154742560
So << alters the original string rather than creating a new one. The reason for this is that in ruby a += b is syntactic ...