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Difference between filter and filter_by in SQLAlchemy
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412
filter_by is used for simple queries on the column names using regular kwargs, like
db.users.fi...
Matplotlib scatterplot; colour as a function of a third variable
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edited Sep 16 '15 at 12:39
answered Nov 20 '11 at 21:43
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How do I convert a Vector of bytes (u8) to a string
...ing buf: &[u8]
//
fn main() {
let buf = &[0x41u8, 0x41u8, 0x42u8];
let s = match str::from_utf8(buf) {
Ok(v) => v,
Err(e) => panic!("Invalid UTF-8 sequence: {}", e),
};
println!("result: {}", s);
}
The conversion is in-place, and does not require a...
How to use git merge --squash?
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2114
Say your bug fix branch is called bugfix and you want to merge it into master:
git checkout m...
How to check if click event is already bound - JQuery
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Update 24 Aug '12: In jQuery 1.8, it is no longer possible to access the element's events using .data('events'). (See this bug for details.) It is possible to access the same data with jQuery._data(elem, 'events'), an internal data...
Running script upon login mac [closed]
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edited Jan 27 '19 at 10:43
answered Jun 22 '11 at 19:39
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.NET: Which Exception to Throw When a Required Configuration Setting is Missing?
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edited Feb 2 '15 at 9:37
Alexander Manekovskiy
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How to send a simple string between two programs using pipes?
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#include <sys/stat.h>
#include <unistd.h>
#define MAX_BUF 1024
int main()
{
int fd;
char * myfifo = "/tmp/myfifo";
char buf[MAX_BUF];
/* open, read, and display the message from the FIFO */
fd = open(myfifo, O_RDONLY);
read(fd, buf, MAX_BUF);
printf("Rece...
Java switch statement: Constant expression required, but it IS constant
...are not a compile time constant in the sense required by the JLS; see §15.28 Constant Expressions for the specification of a constant expression1. This refers to §4.12.4 Final Variables which defines a "constant variable" as follows:
We call a variable, of primitive type or type String, that ...
EditText, clear focus on touch outside
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edited Jan 12 '12 at 18:53
answered Jan 7 '12 at 1:08
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