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Mongoose query where value is not null
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185
You should be able to do this like (as you're using the query api):
Entrant.where("pincode")....
Filter dict to contain only certain keys?
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15 Answers
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Write to .txt file?
...txt", "w");
if (f == NULL)
{
printf("Error opening file!\n");
exit(1);
}
/* print some text */
const char *text = "Write this to the file";
fprintf(f, "Some text: %s\n", text);
/* print integers and floats */
int i = 1;
float py = 3.1415927;
fprintf(f, "Integer: %d, float: %f\n", i, py);
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How can I extract the folder path from file path in Python?
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145
You were almost there with your use of the split function. You just needed to join the strings...
How do you use String.substringWithRange? (or, how do Ranges work in Swift?)
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HTML tag affecting line height, how to make it consistent?
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14 Answers
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How do I resolve the “java.net.BindException: Address already in use: JVM_Bind” error?
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19 Answers
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How can I add a third button to an Android Alert Dialog?
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137
This code snippet should help explain the three different buttons you can use:
alertDialo...
Weighted random numbers
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181
There is a straightforward algorithm for picking an item at random, where items have individua...