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Semicolons superfluous at the end of a line in shell scripts?
...e superfluous, since the newline is also a command separator. case specifically needs double semicolons at the end of the last command in each pattern block; see help case for details.
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impro...
Find all files in a directory with extension .txt in Python
How can I find all the files in a directory having the extension .txt in python?
26 Answers
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Java “params” in method signature?
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In Java it's called varargs, and the syntax looks like a regular parameter, but with an ellipsis ("...") after the type:
public void foo(Object... bar) {
for (Object baz : bar) {
System.out.println(baz.toString());
}
}
The vararg parameter must alw...
Why does Math.Floor(Double) return a value of type Double?
...r is outside the range of long - so what would you expect to happen?
Typically you know that the value will actually be within the range of int or long, so you cast it:
double d = 1000.1234d;
int x = (int) Math.Floor(d);
but the onus for that cast is on the developer, not on Math.Floor itself. I...
Redis command to get all available keys?
Is there a Redis command for fetching all keys in the database? I have seen some python-redis libraries fetching them. But was wondering if it is possible from redis-client.
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How can I update npm on Windows?
...best way to upgrade npm on Windows.
Run PowerShell as Administrator
Set-ExecutionPolicy Unrestricted -Scope CurrentUser -Force
npm install -g npm-windows-upgrade
npm-windows-upgrade
Note: Do not run npm i -g npm. Instead use npm-windows-upgrade to update npm going forward. Also if you run the No...
PostgreSQL: insert from another table
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Just supply literal values in the SELECT:
INSERT INTO TABLE1 (id, col_1, col_2, col_3)
SELECT id, 'data1', 'data2', 'data3'
FROM TABLE2
WHERE col_a = 'something';
A select list can contain any value expression:
But the expressions in the select list do not have to reference any columns i...
“did you run git update-server-info” error on a Github repository
...e repo. Added the github account as a collaborator for the repo and that fixed it.
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MFC CString::Format()函数详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...式命令）
d输出带符号十进制数
o输出无符号八进制数
x输出无符号十六进制数
u输出无符号数
c输出单个字符
s输出一串字符
f输出实数（6位小数）
e以指数形式输出实数
g选用f与e格式中输出宽度较小的格式，不输出0 ...
How to build an android library with Android Studio and gradle?
...I use Gradle and Android.
TL;DR Full Example - https://github.com/ethankhall/driving-time-tracker/
Disclaimer: This is a project I am/was working on.
Gradle has a defined structure ( that you can change, link at the bottom tells you how ) that is very similar to Maven if you have ever used it.
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