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How to skip “are you sure Y/N” when deleting files in batch files
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Use del /F /Q to force deletion of read-only files (/F) and directories and not ask to confirm (/Q) when deleting via wildcard.
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Using GSON to parse a JSON array
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}, {
"number": "2",
"title": "hello_world"
}
]
and
Wrapper[] data = gson.fromJson(jElement, Wrapper[].class);
should work fine.
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How to scroll to top of long ScrollView layout?
For part of my app, the user is presented with a list of names and is asked to group them as they see fit.
15 Answers
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Using semicolon (;) vs plus (+) with exec in find
...+), as many filenames as possible are passed as arguments to a single command:
ls file1 file2 file3
The number of filenames is only limited by the system's maximum command line length. If the command exceeds this length, the command will be called multiple times.
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In Python, how do you convert seconds since epoch to a `datetime` object?
...datetime.utcfromtimestamp creates a naive timestamp. I had to import pytz and use datetime.fromtimestamp(1423524051, pytz.utc) to create an aware datetime.
– Matt
Feb 9 '15 at 23:21
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Django self-referential foreign key
I'm kind of new to webapps and database stuff in general so this might be a dumb question. I want to make a model ("CategoryModel") with a field that points to the primary id of another instance of the model (its parent).
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How to draw a circle with text in the middle?
...ght of the div will center the text vertically. In this example the height and line-height are 500px.
Example
JSFiddle
.circle {
width: 500px;
height: 500px;
line-height: 500px;
border-radius: 50%;
font-size: 50px;
color: #fff;
text-align: center;
background: #000
}
<div clas...
How do I automatically sort a has_many relationship in Rails?
...ill change wildly depending on how you're fetching data in the first place and which Ruby you're using to run your app.
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How can I change UIButton title color?
... ViewController, The following instance method to change UIFont, tintColor and TextColor of the UIButton
Objective-C
buttonName.titleLabel.font = [UIFont fontWithName:@"LuzSans-Book" size:15];
buttonName.tintColor = [UIColor purpleColor];
[buttonName setTitleColor:[UIColor purpleColor] forSta...
Blocks on Swift (animateWithDuration:animations:completion:)
...in. That tells the compiler that this closure takes a Bool labeled 'value' and returns void.
For reference, if you wanted to write a closure that returned a bool the syntax would be
{(value: Bool) -> bool in
//your stuff
}
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