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What is the difference between “px”, “dip”, “dp” and “sp”?
... use this unit when specifying font sizes, so they will be adjusted
for both the screen density and user's preference.
From Understanding Density Independence In Android:
+----------------+----------------+---------------+-------------------------------+
| Density Bucket | Screen Density ...
How to set child process' environment variable in Makefile
...rocesses make invokes... by default. However you can use make's export to force them to do so. Change:
test: NODE_ENV = test
to this:
test: export NODE_ENV = test
(assuming you have a sufficiently modern version of GNU make >= 3.77 ).
...
Is there a way for multiple processes to share a listening socket?
In socket programming, you create a listening socket and then for each client that connects, you get a normal stream socket that you can use to handle the client's request. The OS manages the queue of incoming connections behind the scenes.
...
MemoryCache does not obey memory limits in configuration
...s.
The following code is reflected out of the System.Runtime.Caching DLL, for the CacheMemoryMonitor class (there is a similar class that monitors physical memory and deals with the other setting, but this is the more important one):
protected override int GetCurrentPressure()
{
int num = GC.Col...
Get notified when UITableView has finished asking for data?
Is there some way to find out when a UITableView has finished asking for data from its data source?
18 Answers
...
mongo group query how to keep fields
...ents. How to keep the first document in each group like mysql query group.
for example:
11 Answers
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Most Pythonic way to provide global configuration variables in config.py? [closed]
...
I did that once. Ultimately I found my simplified basicconfig.py adequate for my needs. You can pass in a namespace with other objects for it to reference if you need to. You can also pass in additional defaults from your code. It also maps attribute and mapping style syntax to the same configurati...
CSS table layout: why does table-row not accept a margin?
...
How's this for a work around (using an actual table)?
table {
border-collapse: collapse;
}
tr.row {
border-bottom: solid white 30px; /* change "white" to your background color */
}
It's not as dynamic, since you have to expl...
Converting a string to a date in JavaScript
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The best string format for string parsing is the date ISO format together with the JavaScript Date object constructor.
Examples of ISO format: YYYY-MM-DD or YYYY-MM-DDTHH:MM:SS.
But wait! Just using the "ISO format" doesn't work reliably...
Rename Files and Directories (Add Prefix)
...
Thanks to Peter van der Heijden, here's one that'll work for filenames with spaces in them:
for f in * ; do mv -- "$f" "PRE_$f" ; done
("--" is needed to succeed with files that begin with dashes, whose names would otherwise be interpreted as switches for the mv command)
...