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Set default CRAN mirror permanent in R
...tilde expansion). If this variable is
unset, the default is R_HOME/etc/Rprofile.site, which is used if
it exists (which it does not in a 'factory-fresh' installation).
So do Sys.getenv("R_PROFILE") for the first option, or Sys.getenv("R_HOME") or R.home() for the second option. On m...
PHP convert date format dd/mm/yyyy => yyyy-mm-dd [duplicate]
...);
Then use $current_time as needed in your app (store, add or subtract, etc), then when you need to display the date value it to your users, you can use date() to specify your desired date format:
// Display a human-readable date format
echo date('d-m-Y', $current_time);
This way you'll avoid ...
What are the pros and cons of git-flow vs github-flow? [closed]
...e products like Operating Systems, Office Packages, Custom
applications, etc) you may use git-flow. Main reason is that you need
to continuously support previous versions in production while
developing the next version.
Single version in production simple software - use Github-flow
If yo...
Hibernate vs JPA vs JDO - pros and cons of each? [closed]
... datasources, db4o, hbase, ldap, bigtable, couchdb (plugins for cassandra) etc.
you can easily switch from an sql to non-sql datasource and vice-versa.
no proxy objects and therefore less pain with regards to hashcode() and equals() implementations
more POJO and hence less workarounds required
suppo...
Multiple Inheritance in PHP
...le as having an abstract Tracing class with static methods Debug, SendSMS, etc., which can then be called from within any other class with Tracing::SendSMS() etc. Your other classes are not 'types of' of Tracing, they 'use' Tracing. Note: some people may prefer a singleton over static methods; I pre...
Do I use , , or for SVG files?
...ectRatio(none))" />", which lets you control the aspect ratio, viewBox, etc the same as with inline SVG definitions. Further reading on scaling - css-tricks.com/scale-svg
– brichins
Jun 16 '16 at 17:04
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Does Java read integers in little endian or big endian?
... used a 256 element look up table with the bits reversed (table[0x01]=0x80 etc.) after each byte was shifted in from the bit stream.
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The Use of Multiple JFrames: Good or Bad Practice? [closed]
...ort demo.). Good for:
Showing wizard like dialogs.
Displaying list, tree etc. selections for items that have an associated component.
Flipping between no component and visible component.
JInternalFrame/JDesktopPane typically used for an MDI.
JTabbedPane for groups of components.
JSplitPane A way ...
How can I detect the touch event of an UIImageView?
...as the button image. But if you want finer-grain control over taps, moves, etc. this is the way to go.
You'll also want to look at a few more things:
Override canBecomeFirstResponder and return YES to indicate that the view can become the focus of touch events (the default is NO).
Set the userInt...
Find difference between timestamps in seconds in PostgreSQL
... including seconds. The OP wants not only seconds but also minutes, hours, etc
– Clodoaldo Neto
Dec 24 '12 at 12:39
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