大约有 473 项符合查询结果（耗时：0.0096秒） [XML]
How can I pad an int with leading zeros when using cout
...
cout.fill('*');
cout << -12345 << endl; // print default value with no field width
cout << setw(10) << -12345 << endl; // print default with field width
cout << setw(10) << left << -12345 << endl; // pr...
How do you squash commits into one patch with git format-patch?
...hod would output. For example, to create the patch between commit abcd and 1234:
git diff abcd..1234 > patch.diff
git log abcd..1234 > patchmsg.txt
Then when applying the patch:
git apply patch.diff
git add -A
git reset patch.diff patchmsg.txt
git commit -F patchmsg.txt
Don't forget the ...
How to round a number to significant figures in Python
...
You can use negative numbers to round integers:
>>> round(1234, -3)
1000.0
Thus if you need only most significant digit:
>>> from math import log10, floor
>>> def round_to_1(x):
... return round(x, -int(floor(log10(abs(x)))))
...
>>> round_to_1(0.023...
Changing MongoDB data store directory
...wered May 11 '11 at 8:24
lobster1234lobster1234
7,4692323 silver badges2929 bronze badges
...
How to view the assembly behind the code using Visual C++?
...oost::filesystem::path dir = p.parent_path();
// transform c:\foo\bar\1234\a.exe
// into c:\foo\bar\1234\1234.asm
p.remove_filename();
system ( (dircmd + p.string()).c_str() );
auto subdir = p.end(); // pointing at one-past the end
subdir--; // ...
Fixed point vs Floating point number
...of precision, so a value of 100 means actually means 1.00, 101 means 1.01, 12345 means 123.45, etc.
Floating point numbers are more general purpose because they can represent very small or very large numbers in the same way, but there is a small penalty in having to have extra storage for where the...
How many String objects will be created when using a plus sign?
... optimize away those + signs. It's equivalent to:
const String result = "1234";
Furthermore, the compiler will remove extraneous constant expressions, and only emit them if they are used or exposed. For instance, this program:
const String one = "1";
const String two = "1";
const String result...
How to push to a non-bare Git repository?
...tart the tunnel from the natted box you wish to pull from (local)
$ ssh -R 1234:localhost:22 user@remote
# on the other box (remote)
$ git remote add other-side ssh://user@localhost:1234/the/repo
$ git pull other-side
And if you want the tunnel to run in the background
$ ssh -fNnR 1234:localhost...
Downloading a file from spring controllers
...wered Apr 15 '11 at 7:01
lobster1234lobster1234
7,4692323 silver badges2929 bronze badges
...
Allowed characters in Linux environment variable names
...r, you can set variable in Dockerfile
FROM busybox
ENV xx.f%^&*()$#ff=1234
Kubernetes configmap
If you are using kubernetes, you can set variable by ConfigMap
test.yaml
apiVersion: v1
kind: ConfigMap
metadata:
name: foo-config
data:
"xx.ff-bar": "1234"
---
apiVersion: v1
kind: Pod
m...