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Printing newlines with print() in R
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An advantage is that you don't have to remember to append a "\n" to the string passed to cat() to get a newline after your message. E.g. compare the above to the same cat() output:
> cat("File not supplied.\nUsage: ./program F=filename")
File not supplied.
Usage: ./program F=filename>
an...
Do HttpClient and HttpClientHandler have to be disposed between requests?
...plication needs to make HTTP requests. Having an object
exist across multiple requests enables a place for setting
DefaultRequestHeaders and prevents you from having to re-specify
things like CredentialCache and CookieContainer on every request as
was necessary with HttpWebRequest.
Or even...
How to log request and response body with Retrofit-Android?
...rofit2.http.Query;
import rx.Observable;
public interface APIService {
String ENDPOINT = "http://api.openweathermap.org";
String API_KEY = "2de143494c0b2xxxx0e0";
@GET("/data/2.5/weather?appid=" + API_KEY) Observable<WeatherPojo> getWeatherForLatLon(@Query("lat") double lat, @Query("l...
Move (or “Undo”) last git commit to unstaged area [duplicate]
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git-extras provides a git undo command which is an easier to remember way of doing the same thing (along with a number of other handy extras, as the name implies).
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Is there a way to pass jvm args via command line to maven? [duplicate]
..._OPTS="-Xms256m -Xmx512m". This environment variable can be used to supply extra options to Maven.
In Win, you need to set environment variable via the dialogue box
Add ... environment variable by opening up the system properties (WinKey + Pause),... In the same dialog, add the MAVEN_OPTS env...
Call two functions from same onclick [duplicate]
...n overload that translates as one cell in the stack and half a millisecond extra for processing. It is more than worth it for the gain in readability and easy of maintenance. Imagine that in the future you have to add three extra methods, with conditional logic.
– Renan
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使用模拟器构建应用程序 · App Inventor 2 中文网
...luded with the software you already downloaded as part of the App Inventor Extras Package. Navigate to the directory where the App Inventor Extras software was installed, locate the folder called commands-for-appinventor and run the command
run-emulator.
Be patient: The emulator takes a long time t...
【解决】模拟器启动失败：ERROR: x86_64 emulation currently requires har...
...，路径：
....\resources\app.asar.unpacked\Emulator\from-Android-SDK\extras\intel\Hardware_Accelerated_Execution_Manager
在线版下载后的目录是：Emulator\from-Android-SDK\extras\intel\Hardware_Accelerated_Execution_Manager
安装：haxm-7.6.5-setup.exe
如果报错，请参考...
if a ngSrc path resolves to a 404, is there a way to fallback to a default?
... Works well if the url is broken (404), but if it's an empty string ng-src silently swallows the error.
– Stephen Patten
Sep 18 '13 at 18:43
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Jquery - How to make $.post() use contentType=application/json?
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@PavelRepin, I had to call JSON.stringify() on the payload.
– Ustaman Sangat
Apr 30 '12 at 23:41
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