大约有 47,000 项符合查询结果（耗时：0.0573秒） [XML]
How to throw a C++ exception
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#include <stdexcept>
int compare( int a, int b ) {
if ( a < 0 || b < 0 ) {
throw std::invalid_argument( "received negative value" );
}
}
The Standard Library comes with a nice collection of built-in exception objects you can throw. Keep in mind that you should always...
How can we make xkcd style graphs?
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answered May 16 '13 at 20:49
Emilio Torres ManzaneraEmilio Torres Manzanera
4,74022 gold badges1212 silver badges88 bronze badges
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How to automatically generate a stacktrace when my program crashes
...b.h>
#include <unistd.h>
void handler(int sig) {
void *array[10];
size_t size;
// get void*'s for all entries on the stack
size = backtrace(array, 10);
// print out all the frames to stderr
fprintf(stderr, "Error: signal %d:\n", sig);
backtrace_symbols_fd(array, size, STDE...
How to bind multiple values to a single WPF TextBlock?
...;
<TextBlock.Text>
<MultiBinding StringFormat="{}{0} + {1}">
<Binding Path="Name" />
<Binding Path="ID" />
</MultiBinding>
</TextBlock.Text>
</TextBlock>
Giving Name a value of Foo and ID a value of 1, yo...
Smart way to truncate long strings
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380
Essentially, you check the length of the given string. If it's longer than a given length n, cli...
Iterate through the fields of a struct in Go
....ValueOf(x)
values := make([]interface{}, v.NumField())
for i := 0; i < v.NumField(); i++ {
values[i] = v.Field(i).Interface()
}
fmt.Println(values)
}
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MongoDB inserts float when trying to insert integer
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db.data.update({'name': 'zero'}, {'$set': {'value': NumberInt(0)}})
You can also use NumberLong.
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Secondary axis with twinx(): how to add to legend?
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You can easily add a second legend by adding the line:
ax2.legend(loc=0)
You'll get this:
But if you want all labels on one legend then you should do something like this:
import numpy as np
import matplotlib.pyplot as plt
from matplotlib import rc
rc('mathtext', default='regular')
time =...
Test if something is not undefined in JavaScript
I'm checking if(response[0].title !== undefined) , but I get the error:
11 Answers
11...
Forcing child to obey parent's curved borders in CSS
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201
According to the specs:
A box's backgrounds, but not its
border-image, are clipped to t...