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What is the purpose of XORing a register with itself? [duplicate]
...here are bound to be zero bytes somewhere in your code, so I don't see how one more would make much difference. Anyway, who cares if you can trick a program into reading code as data. The real problem is executing data as code.
– Stephen C
Sep 8 '09 at 22:36
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Android Log.v(), Log.d(), Log.i(), Log.w(), Log.e() - When to use each one?
...ow you specifically map them to debug logs in your code depends on the component or app you're working on, as well as how Android treats them on different build flavors (eng, userdebug, and user). I have done a fair amount of work in the native daemons in Android, and this is how I do it. It may n...
Determine if a String is an Integer in Java [duplicate]
...better.
str.matches("-?\\d+");
-? --> negative sign, could have none or one
\\d+ --> one or more digits
It is not good to use NumberFormatException here if you can use if-statement instead.
If you don't want leading zero's, you can just use the regular expression as follow:
str....
What is LDAP used for?
... is LDAP.
The use model is similar like how people use library cards or phonebooks. When you have a task that requires “write/update once, read/query many times”, you might consider using LDAP. LDAP is designed to provide extremely fast read/query performance for a large scale of dataset. Typic...
Are global variables in PHP considered bad practice? If so, why?
...riables aren't really global in PHP. The scope of a typical PHP program is one HTTP request. Session variables actually have a wider scope than PHP "global" variables because they typically encompass many HTTP requests.
Often (always?) you can call member functions in methods like preg_replace_call...
Multiprocessing vs Threading Python [duplicate]
...o the GIL the app isn't actually doing two things at once, but what we've done is put the resource lock on the database into a separate thread so that CPU time can be switched between it and the user interaction. CPU time gets rationed out between the threads.
Multiprocessing is for times when you ...
How to get arguments with flags in Bash
I know that I can easily get positioned parameters like this in bash:
11 Answers
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Is there a “theirs” version of “git merge -s ours”?
... only fall back to "theirs" logic in case of conflicts. While this is what one needs in most cases like above, this is not the same as "just take everything from branch B as is". It does the real merge instead anyway.
– Timur
Oct 14 '13 at 11:57
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Getting the last element of a list
...his answer is incorrect. Getting a list when you want an element only postpones the inevitable "list index out of range" - and that's what should happen when attempting to get an element from an empty list. For Strings astr[-1:] could be a valid approach since it returns the same type as astr[-1], b...
How to make EditText not editable through XML in Android?
Can anyone tell me how to make an EditText not editable via XML? I tried setting android:editable to false , but
27 An...