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How to subtract X day from a Date object in Java?
...r
Use Calendar's add() method
Calendar cal = Calendar.getInstance();
cal.setTime(dateInstance);
cal.add(Calendar.DATE, -30);
Date dateBefore30Days = cal.getTime();
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What's the easy way to auto create non existing dir in ansible
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According to the latest document when state is set to be directory, you don't need to use parameter recurse to create parent directories, file module will take care of it.
- name: create directory with parent directories
file:
path: /data/test/foo
state: direct...
JQuery to check for duplicate ids in a DOM
...ning in production and really ought to optimize it by now - or add a debug setting to turn it on/off!
– Simon_Weaver
Mar 18 '11 at 19:15
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EF5: Cannot attach the file ‘{0}' as database '{1}'
...ust like IIS Express. This allows to share projects with many devs without setting up IIS or SQL Server for each individual user.
– Bart Verkoeijen
Nov 17 '13 at 10:03
add a c...
How can I disable logging of asset pipeline (sprockets) messages in Ruby on Rails 3.1?
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Place the following code in config/initializers/quiet_assets.rb
if Rails.env.development?
Rails.application.assets.try(:logger=, Logger.new('/dev/null'))
Rails::Rack::Logger.class_eval do
def call_with_quiet_assets(env)
previous_level = Rails.logger.level
Rail...
Query-string encoding of a Javascript Object
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@Ofri: For POST requests to a server set up to receive it, JSON is a good choice. For GET requests, if you're sending anything other than a few simple parameters to the server then it's likely your design is wrong.
– Tim Down
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.Contains() on a list of custom class objects
... editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
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How can you tell when a layout has been drawn?
... requires that you continually verify (view.getMeasuredWidth() <= 0) or set a limit to the number of times you check for a measuredWidth greater than zero.
There is also a chance that the view will never be drawn, which may indicate other problems with your code.
final View view = [ACQUIRE REFE...
How to access a mobile's camera from a web app?
...Selecting photos, but not giving me the option for Camera even when i have set capture="camera"....totally stuck
– Benyaman
Apr 21 '17 at 4:07
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IF statement: how to leave cell blank if condition is false (“” does not work)
... is a valid option.
Also, count(a:a) will not count cells which have been set to n/a by doing this.
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