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Timer & TimerTask versus Thread + sleep in Java
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From the Timer documentation:
Java 5.0 introduced the java.util.concurrent package and one of the
concurrency utilities therein is the ScheduledThreadPoolExecutor which
is a thread pool for repeatedly executing tasks ...
How best to include other scripts?
... source filenames, ${string%substring} strips shortest match of $substring from back of $string
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Quick-and-dirty way to ensure only one instance of a shell script is running at a time
...the lock to act on, there is no meaningful data going into it. The exit is from the part inside the ( ). When the subprocess ends, the lock is automatically released, because there is no process holding it.
– clacke
Jun 18 '15 at 10:46
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Link vs compile vs controller
...ction to register all listeners on a specific DOM element (that’s cloned from the template) and set up our bindings to the page.
If set in the compile() function they would only have been set once (which is often what you want). If set in the link() function they would be set every time the HTML ...
When exactly is it leak safe to use (anonymous) inner classes?
...ome articles on memory leaks in Android and watched this interesting video from Google I/O on the subject .
3 Answers
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Is double square brackets [[ ]] preferable over single square brackets [ ] in Bash?
... a weird name.
] is just an argument of [ that prevents further arguments from being used.
Ubuntu 16.04 actually has an executable for it at /usr/bin/[ provided by coreutils, but the bash built-in version takes precedence.
Nothing is altered in the way that Bash parses the command.
In particular...
Elevating process privilege programmatically?
...s";
This will cause Windows to behave as if the process has been started from Explorer with the "Run as Administrator" menu command.
This does mean the UAC prompt will come up and will need to be acknowledged by the user: if this is undesirable (for example because it would happen in the middle o...
What is the meaning of erb?
...".js.erb" or ".rxml" to ".xml.erb"
This format separates out content type from template engine which is "erb" in this case.
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Good Java graph algorithm library? [closed]
...imported via colt (jung.sourceforge.net/download.html). This prevents JUNG from being used in projects under the umbrella of ASF and ESF. Maybe one should use the github fork github.com/rortian/jung2 and remove that dependency. github.com/rortian/jung2/commit/… is mirroring the last CVS commit. Th...
How do I add a placeholder on a CharField in Django?
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For a ModelForm, you can use the Meta class thus:
from django import forms
from .models import MyModel
class MyModelForm(forms.ModelForm):
class Meta:
model = MyModel
widgets = {
'name': forms.TextInput(attrs={'placeholder': 'Name'}),
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