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How to modify a text file?
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This is an operating system thing, not a Python thing. It is the same in all languages.
What I usually do is read from the file, make the modifications and write it out to a new file called myfile.txt.tmp or something like that. This is better than reading the whole file into memory because the f...
Why do people put code like “throw 1; ” and “for(;;);” in front of json responses? [du
...ruct, they'll be the attacker's own versions of those objects, with potentially-unexpected behaviour.
For example, you can hack a setter-property into Object, that would betray the values written in object literals:
Object.prototype.__defineSetter__('x', function(x) {
alert('Ha! I steal '+x);
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Best branching strategy when doing continuous integration?
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I find the topic really interesting since I heavily rely on branches on my daily job.
I remember Mark Shuttleworth proposing a model about keeping the main branch pristine while going beyond conventional CI. I posted about it here.
Since I'm ...
Vertical (rotated) label in Android
...d simple vertical text implementation, extending TextView. This means that all standard styles of TextView may be used, because it is extended TextView.
public class VerticalTextView extends TextView{
final boolean topDown;
public VerticalTextView(Context context, AttributeSet attrs){
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.NET: Which Exception to Throw When a Required Configuration Setting is Missing?
...ubclass to ConfigurationErrorsException from Exception. I think it's generally a good idea to subclass custom exceptions from existing Framework exceptions where possible, avoiding the Exception class unless you need an application-specific exception.
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What is the maximum float in Python?
I think the maximum integer in python is available by calling sys.maxint .
3 Answers
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Add timestamps to an existing table
..._table block. You can add these columns by specifying the column types manually:
class AddTimestampsToUser < ActiveRecord::Migration
def change_table
add_column :users, :created_at, :datetime, null: false
add_column :users, :updated_at, :datetime, null: false
end
end
While this do...
How do I specify the platform for MSBuild?
...ify both the configuration and platform. Thanks
– DRapp
Mar 31 '16 at 20:59
7
Beware that MSBuil...
Reverse / invert a dictionary mapping
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For Python 2.7.x
inv_map = {v: k for k, v in my_map.iteritems()}
For Python 3+:
inv_map = {v: k for k, v in my_map.items()}
share
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improve...
How to convert an NSTimeInterval (seconds) into minutes
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Mick MacCallum's answer below at the time of writing this comment seems to be most updated and made by the way of using native API.
– Tomasz Nazarenko
Feb 25 '17 at 8:53
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