大约有 48,000 项符合查询结果（耗时：0.0691秒） [XML]
Count the occurrences of DISTINCT values
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What exactly is the group by doing here? It is not clear what is purpose is? It seems it should work with out it if you where just reading it plainly.
– James
Sep 19 '11 at 15:46
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Get environment variable value in Dockerfile
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What is the purpose of the ENV line? For me --build-arg + ARG was enough.
– Phil
Sep 29 '17 at 7:43
3
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Android Reading from an Input stream efficiently
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What about this. Seems to give better performance.
byte[] bytes = new byte[1000];
StringBuilder x = new StringBuilder();
int numRead = 0;
while ((numRead = is.read(bytes)) >= 0) {
x.append(new String(bytes, 0, numRe...
How can I include a YAML file inside another?
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This is an intresting feature, thanx. But what is the purpose of all these manipulations with root/old_root? I suppose the code of include function can simplified: ` def include(loader, node): """Include another YAML fil...
Can Maven be made less verbose?
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-q as said above is what you need. An alternative could be:
-B,--batch-mode
Run in non-interactive (batch) mode
Batch mode is essential if you need to run Maven in a non-interactive, continuous integration environment. When running in non-inter...
How can I create a temp file with a specific extension with .NET?
...ilename),"Hello World");
Here I used a txt extension but you can specify whatever you want. I also set the keep flag to true so that the temp file is kept around after use. Unfortunately, TempFileCollection creates one random file per extension. If you need more temp files, you can create multiple...
Spring Boot application as a Service
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What follows is the easiest way to install a Java application as system service in Linux.
Let's assume you are using systemd (which any modern distro nowadays does):
Firstly, create a service file in /etc/systemd/system nam...
Get the _id of inserted document in Mongo database in NodeJS
...serted){
console.log(docsInserted);
});
and check the console to see what I mean.
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How to delete from multiple tables in MySQL?
...red procedures or constraints and they're only dangerous if you don't know what you're doing. Still, I won't argue the point further, we'll just have to agree to disagree.
– paxdiablo
Jul 26 '10 at 4:03
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How can I play sound in Java?
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For whatever reason, the top answer by wchargin was giving me a null pointer error when I was calling this.getClass().getResourceAsStream().
What worked for me was the following:
void playSound(String soundFile) {
File f ...