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What is an uninterruptible process?
...function) that cannot be interrupted by a signal.
To understand what that means, you need to understand the concept of an interruptible system call. The classic example is read(). This is a system call that can take a long time (seconds) since it can potentially involve spinning up a hard drive, or...
Fragment onCreateView and onActivityCreated called twice
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@flock.dux I'm not sure what you mean by overlapp each other. Android takes care of how they are layed out so, we just specify attach or detach. There must be more going on. Maybe if you ask a new question with example code we can figure out what's going on ...
How does a Linux/Unix Bash script know its own PID?
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could you please explain what does "<<<" mean? Thanks.
– Sopalajo de Arrierez
Mar 29 '14 at 20:27
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Android, canvas: How do I clear (delete contents of) a canvas (= bitmaps), living in a surfaceView?
...sary. PorterDuff.Mode.CLEAR is totally enough for a ARGB_8888 bitmap which means setting the alpha and color to [0, 0]. Another way is to use Color.TRANSPARENT with PorterDuff.Mode.SRC.
– jiasli
May 30 '14 at 12:02
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Tying in to Django Admin's Model History
... either ADDITION or CHANGE. It simplifies things a wee bit where ADDITION means "added a new server." A more flexible approach would allow for adding an attribute to a server. Of course, it was sufficiently challenging to audit our existing functions to determine if a changes had actually taken p...
Force re-download of release dependency using Maven
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mvn clean install -U
-U means force update of dependencies.
If you want to update a single dependency without clean or -U you could just remove it from your local repo and then build.
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How can I access and process nested objects, arrays or JSON?
...or an object and assign them to variables. In this case const [key, value] means that instead of assigning the [key, value] array to element, we assign the first element of that array to key and the second element to value. It is equivalent to this:
for (const element of Object.entries(obj)) {
co...
what's data-reactid attribute in html?
...collisions. At the client-side, there is only one rendering process, which means counters can be used to ensure unique ids.
React 15 uses document.createElement instead, so client rendered markup won't include these attributes anymore.
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Assign one struct to another in C
...eplaced by a "mov" instruction in assembly, the assignment operator simply means moving data from one memory location to another memory location.
The assignment will only do it for immediate members of a structures and will fail to copy when you have Complex datatypes in a structure. Here COMPLEX ...
Secure hash and salt for PHP passwords
... has 1 upper case letter, 1 lower case letter, a number, and a symbol, it means the number of tries they need is significantly less. By allowing the user to decide what they want, the hacker has to try harder.
– Popnoodles
Jan 25 '13 at 0:17
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