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Crontab - Run in directory
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All jobs are executed by a shell, so start that shell snippet by a command to change the directory.
cd /path/to/directory && ./bin/myapp
Concerning the use of && instead of ;: normally it doesn't make a difference, but if the cd...
Adding minutes to date time in PHP
... the form of P{y}Y{m1}M{d}DT{h}H{m2}M{s}S where the {*} parts are replaced by a number value indicating how long the duration is.
For example, P1Y2DT5S means 1 year, 2 days, and 5 seconds.
In the example above, we are providing PT5M (or 5 minutes) to the DateInterval constructor.
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Why does C# allow {} code blocks without a preceding statement?
...un-time? From what I can tell, variables' lifetimes are often not bounded by scoping blocks, a fact which is observable in mixed-language projects if the first thing done with a variable in a loop is to pass it as an out parameter to an interface implementation written in another language, and that...
Singletons vs. Application Context in Android?
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I very much disagree with Dianne Hackborn's response. We are bit by bit removing all singletons from our project in favor of lightweight, task scoped objects which can easiliy be re-created when you actually need them.
Singletons are a nightmare for testing and, if lazily initialized, wil...
How are software license keys generated?
...emember that it only took about five minutes to "brute force" the verifier by mashing on the keypad and trying again.
– fmark
Jun 20 '10 at 23:33
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How to repeat a string a variable number of times in C++?
...e repeating a single character, the two-argument constructor (as suggested by previous answers) works well:
std::string(5, '.')
This is a contrived example of how you might use an ostringstream to repeat a string n times:
#include <sstream>
std::string repeat(int n) {
std::ostringstre...
Git Push error: refusing to update checked out branch
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I solved this problem by first verifying the that remote did not have anything checked out (it really was not supposed to), and then made it bare with:
$ git config --bool core.bare true
After that git push worked fine.
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File content into unix variable with newlines
...t value is <space><tab><newline>.
That specifies that, by default, any of those three characters can be used to split your command into individual words. After that, the word separators are gone, all you have left is a list of words.
Combine that with the echo documentation (a b...
Parcelable encountered IOException writing serializable object getactivity()
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Caused by: java.io.NotSerializableException: com.resources.student_list.DSLL$DNode
Your DSLL class appears to have a DNode static inner class, and DNode is not Serializable.
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Check if a value is within a range of numbers
...oesn't fit the question, that's all. No offense. I always judge a solution by how good it answers the question. That's because I generally assume people know what they are asking for. The checkmark shows me this wasn't the case with this questioner.
– Leif
Jun ...