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How to check if a symlink exists
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do you really see a difference between -L and -h ? in my bash ( version 4.2.53(1)-release (x86_64-redhat-linux-gnu ) man bash is identical for both -L and -h and they behave the same, ie they check that file actualy is a link and don'...
How to force IntelliJ IDEA to reload dependencies from build.sbt after they changed?
...n't pickup changes to the version of an existing dependency (I have to manually change the various .iml and .idea/libraries/SBT_SBT_.xml to the new version number). I'd like to follow up on that ticket.
– David B.
Dec 7 '13 at 3:50
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Build vs new in Rails 3
...ng a new Client object from the clients collection, and so it can automatically set the firm_id to some_firm.id, whereas the docs are calling Client.new which has no knowledge of any Firm's id at all, so it needs the firm_id passed to it.
The only difference between some_firm.clients.new and some_f...
Is it possible to group projects in Eclipse?
... focus on a particular area of a project, activate them through Mylin; a really powerful tool indeed
use the basic concept of workspace which allows you to work on many projects and relate them (via the Build path "Projects" tab, and "Java EE Module Dependencies") so that when you need resources fro...
How to debug Lock wait timeout exceeded on MySQL?
In my production error logs I occasionally see:
11 Answers
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live output from subprocess command
... file descriptor (in POSIX at least). (Side note: PIPE and STDOUT are actually ints internally, but are "impossible" descriptors, -1 and -2.)
A stream—really, any object with a fileno method. Popen will find the descriptor for that stream, using stream.fileno(), and then proceed as for an int va...
How to change the decimal separator of DecimalFormat from comma to dot/point?
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Side note: NumberFormat.getNumberInstance() can run unusually slowly on some Android 7 devices. An alternative is String.format() which runs quickly. See stackoverflow.com/questions/2379221/java-currency-number-format
– Mr-IDE
Oct 16 '17 at 5:...
How to solve javax.net.ssl.SSLHandshakeException Error?
...grated PayPal with my application for make Express checkout when I make a call for payment I'm facing this error. I use servlet for back-end process. Can any one say how to fix this issue?
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PHP code is not being executed, instead code shows on the page
...guration, here are a few things you can check:
Make sure that PHP is installed and running correctly. This may sound silly, but you never know. An easy way to check is to run php -v from a command line and see if returns version information or any errors.
Make sure that the PHP module is listed an...
Big-O for Eight Year Olds? [duplicate]
...ore about what this means to my code. I understand the concepts mathematically, I just have a hard time wrapping my head around what they mean conceptually. For example, if one were to perform an O(1) operation on a data structure, I understand that the number of operations it has to perform won't...