大约有 44,000 项符合查询结果（耗时：0.0637秒） [XML]
Detect if Android device has Internet connection
...eck if there is an active Internet connection is to try and connect
to a known server via http.
public static boolean hasActiveInternetConnection(Context context) {
if (isNetworkAvailable(context)) {
try {
HttpURLConnection urlc = (HttpURLConnection) (new URL("http://www.go...
Fully custom validation error message with Rails
...
Now, the accepted way to set the humanized names and custom error messages is to use locales.
# config/locales/en.yml
en:
activerecord:
attributes:
user:
email: "E-mail address"
errors:
models:
...
Maven compile with multiple src directories
... This was a good idea a couple years ago but there are much better options now. build-helper listed above is my preferred options.
– sal
May 6 '11 at 1:51
5
...
Is there a way to make R beep/play a sound at the end of a script?
...mething else on a different desktop. If I don't check frequently, I never know when something is finished. Is there a way to invoke a beep (like a system beep) or get R to play a sound or notify growl via some code at the end of my script?
...
Making a Sass mixin with optional arguments
...-box-shadow: $args;
-moz-box-shadow: $args;
box-shadow: $args;
}
And now you can reuse your box-shadow in every class you want by passing all needed args:
.my-box-shadow {
@include box-shadow(2px 2px 5px #555, inset 0 0 0);
}
...
Android 4.1: How to check notifications are disabled for the application?
...d for the new notifications declares that you can't.
Edit
2016 update: Now you can check it, as said in this Google I/O 2016 video.
Use NotificationManagerCompat.areNotificationsEnabled(), from support library, to check if notifications are blocked on API 19+. The versions below API 19 will ret...
Junit - run set up method once
...
JUnit 5 now has a @BeforeAll annotation:
Denotes that the annotated method should be executed before all @Test
methods in the current class or class hierarchy; analogous to JUnit
4’s @BeforeClass. Such methods must be stati...
bash/fish command to print absolute path to a file
...will still give you a valid path given some relative path. If you want to know about file existence use another tool like e.g. test.
– Benjamin Bannier
Feb 27 '13 at 17:47
...
what exactly is device pixel ratio?
this is mentioned every article about mobile web, but nowhere I can found an explanation of what exactly does this attribute measure.
Can anyone please elaborate what does queries like this check?
...
/bin/sh: pushd: not found
...y my PS1 is (\u) \h:\w> but I just stripped it down to a generic string now for the answer. The prompt in DOS is also ending with > by default ($P$G IIRC), and I like that.
– hlovdal
Mar 4 '11 at 12:28
...