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How do I check if a C++ std::string starts with a certain string, and convert a substring to an int?
...only match at that position or earlier. For example:
std::string test = "0123123";
size_t match1 = test.rfind("123"); // returns 4 (rightmost match)
size_t match2 = test.rfind("123", 2); // returns 1 (skipped over later match)
size_t match3 = test.rfind("123", 0); // returns std::string::npos (i...
Java: How to set Precision for double value? [duplicate]
...ts.
If you only want to print, use it this way:
System.out.printf("%.2f",123.234);
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Regular Expression to reformat a US phone number in Javascript
...
Assuming you want the format "(123) 456-7890":
function formatPhoneNumber(phoneNumberString) {
var cleaned = ('' + phoneNumberString).replace(/\D/g, '')
var match = cleaned.match(/^(\d{3})(\d{3})(\d{4})$/)
if (match) {
return '(' + match[1] + ')...
Git - working on wrong branch - how to copy changes to existing topic branch
...
Sounds like all you need is the following:
git stash
git checkout branch123
git stash apply
Then you should be back on your own branch without touching the master branch.
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How do I programmatically determine operating system in Java?
..."nix") || operSys.contains("nux")
|| operSys.contains("aix")) {
os = OS.LINUX;
} else if (operSys.contains("mac")) {
os = OS.MAC;
} else if (operSys.contains("sunos")) {
os = OS.SOLARIS;
}
...
How to use mongoimport to import csv
...of MongoDB?
$ cat > locations.csv
Name,Address,City,State,ZIP
Jane Doe,123 Main St,Whereverville,CA,90210
John Doe,555 Broadway Ave,New York,NY,10010
ctrl-d
$ mongoimport -d mydb -c things --type csv --file locations.csv --headerline
connected to: 127.0.0.1
imported 3 objects
$ mongo
MongoDB sh...
FloatingActionButton 扩展：悬浮操作按钮扩展，可自定义颜色、大小、位置...
...链接
扩展文件：
joejsanz.joedevfloatingactionbutton.aix
示例文件：
FloatingActionButton.aia
功能概述
扩展特性
自定义图标：支持自定义 PNG 图标或使用默认加号图标
颜色自定义：可自定...
Popup弹出菜单扩展 · App Inventor 2 中文网
...和安装
Popup扩展: de.ullisroboterseite.ursai2popup.aix
示例应用: PopupExample.aia
开发动机
MIT App Inventor包含从列表中选择组件，例如ListView组件。不幸的是，它总是填满整个屏幕，而且配置视图的选项很少...
Difference between author and committer in Git?
...ou can either:
format the log specifically for that:
git log --pretty='%cn %cd' -n1 HEAD
where cn and cd stand for Committer Name and Committer Date
use the fuller predefined format:
git log --format=fuller
See also: How to configure 'git log' to show 'commit date'
go low level and show the ...
How can I make a Python script standalone executable to run without ANY dependency?
...d-alone executables, under Windows, Linux, Mac OS X, FreeBSD, Solaris, and AIX. It is one of the recommended converters.
py2exe converts Python scripts into only executable on the Windows platform.
Cython is a static compiler for both the Python programming language and the extended Cython programmi...