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Write text files without Byte Order Mark (BOM)?
...to generate a BOM). There are two easy ways to do this:
1. Explicitly specifying a suitable encoding:
Call the UTF8Encoding constructor with False for the encoderShouldEmitUTF8Identifier parameter.
Pass the UTF8Encoding instance to the stream constructor.
' VB.NET:
Dim utf8WithoutBom As New Sys...
How to reuse an ostringstream?
...lt;< "hello";
s.seekp(0);
s << "b";
assert(s.str() == "bello");
If you want to use the string for c-functions, you can use std::ends, putting a terminating null like this:
std::ostringstream s;
s << "hello";
s.seekp(0);
s << "b" << std::ends;
assert(s.str().size() == 5 ...
Difference between 'python setup.py install' and 'pip install'
...utomatically download all dependencies for a package for you. In contrast, if you use setup.py, you often have to manually search out and download dependencies, which is tedious and can become frustrating.
pip keeps track of various metadata that lets you easily uninstall and update packages with a ...
How to set up a cron job to run an executable every hour?
...
You're right. && is much better if there is a chance the cd target doesn't exist (for example if the diretory is on an NFS server that happens to be down).
– joast
Aug 13 '10 at 16:36
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When to use an assertion and when to use an exception
...nning, but an exception would let the program continue running.
Note that if(group != null) is not an assertion, that is just a conditional.
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To Workflow or Not to Workflow?
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I have done several WF4 projects so lets see if I can add any useful info to the other answers.
From the description of your business problem it sounds like WF4 is a good match, so no problems there.
Regarding your concerns you are right. Basically WF4 is a new produc...
Exception 'open failed: EACCES (Permission denied)' on Android
..... The <uses-permission was in the wrong place. This is right:
<manifest>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
...
<application>
...
<activity>
...
</ac...
This version of the application is not configured for billing through Google Play
...st of requirements for the Google IAB testing.
Prerequisites:
AndroidManifest must include "com.android.vending.BILLING" permission.
APK is built in release mode.
APK is signed with the release certificate(s). (Important: with "App Signing by Google Play" it only works if you download directly fr...
Does a C# app track how long its been running?
And if it does, is there an easy way to get the total time since it started?
3 Answers
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How to update a value, given a key in a hashmap?
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Java 8 way:
You can use computeIfPresent method and supply it a mapping function, which will be called to compute a new value based on existing one.
For example,
Map<String, Integer> words = new HashMap<>();
words.put("hello", 3);
words.put("...