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Initializing a member array in constructor initializer
... have to use braces directly to fire off list initialization
struct A {
int foo[3];
A():foo{1, 2, 3} { }
A():foo({1, 2, 3}) { } /* invalid */
};
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C++ mark as deprecated
I have a method in an interface that I want to deprecate with portable C++.
When I Googled for this all I got was a Microsoft specific solution; #pragma deprecated and __declspec(deprecated) .
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Request format is unrecognized for URL unexpectedly ending in
...have gone away. if i see the error again i'll move the webservices configs into the webserver section.
– Daniel Brink
Apr 20 '10 at 8:08
1
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Using reflect, how do you set the value of a struct field?
..., a field of an
addressable struct, or the result of
dereferencing a pointer. If CanAddr
returns false, calling Addr will
panic.
The Go reflect package has a CanSet function, which, if true, implies that CanAddr is also true.
func (v Value) CanSet() bool
CanSet returns true if the va...
What are the best practices for SQLite on Android?
...ow up blog post:
Single SQLite connection
Also checkout the fork by 2point0 of the previously mentioned locking example:
Android-Database-Locking-Collisions-Example by 2point0 on GitHub
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How to create and handle composite primary key in JPA
...nts Serializable {
@Column(name = "Id", nullable = false)
private int id;
@Column(name = "Version", nullable = false)
private int version;
/** getters and setters **/
}
Another way to achieve this task is to use @IdClass annotation, and place both your id in that IdClass. ...
Call apply-like function on each row of dataframe with multiple arguments from each row
... Don't use apply on big data.frames it will copy the entire object (to convert to a matrix). This will also cause problems If you have different class objects within the data.frame.
– mnel
Feb 25 '13 at 2:47
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Why is 128==128 false but 127==127 is true when comparing Integer wrappers in Java?
...
When you compile a number literal in Java and assign it to a Integer (capital I) the compiler emits:
Integer b2 =Integer.valueOf(127)
This line of code is also generated when you use autoboxing.
valueOf is implemented such that certain numbers are "pooled", and it returns the same ...
Is char signed or unsigned by default?
...d.
Do note that char is special in this way. If you declare a variable as int it is 100% equivalent to declaring it as signed int. This is always true for all compilers and architectures.
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In C, how should I read a text file and print all strings
...
The simplest way is to read a character, and print it right after reading:
int c;
FILE *file;
file = fopen("test.txt", "r");
if (file) {
while ((c = getc(file)) != EOF)
putchar(c);
fclose(file);
}
c is int above, since EOF is a negative number, and a pl...