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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 to swap keys and values in a hash
...was inverted (in essence, by letting you access keys through values):
{a: 1, b: 2, c: 3}.key(1)
=> :a
If you want to keep the inverted hash, then Hash#invert should work for most situations:
{a: 1, b: 2, c: 3}.invert
=> {1=>:a, 2=>:b, 3=>:c}
BUT...
If you have duplicate values,...
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 do I resolve the “java.net.BindException: Address already in use: JVM_Bind” error?
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How do you use String.substringWithRange? (or, how do Ranges work in Swift?)
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How to check if an int is a null
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189
An int is not null, it may be 0 if not initialized.
If you want an integer to be able to be n...
What is the “__v” field in Mongoose
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312
From here:
The versionKey is a property set on each document when first created
by Mongoo...
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...