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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...
Type erasure techniques
...
All type erasure techniques in C++ are done with function pointers (for behaviour) and void* (for data). The "different" methods simply differ in the way they add semantic sugar. Virtual functions, e.g., are just semantic sugar for
struct Class {
struct vtable {
...
C#操作XML小结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...mlSchema("your xmlfile name");
第二种方法：
<aaa>
<add key="123" value="321"/>
</aaa>
如果我要找到123然后取到321应该怎么写呢？
using System.XML;
XmlDataDocument xmlDoc = new System.Xml.XmlDataDocument();
xmlDoc.Load(@"c:/Config.xml");
XmlElement elem = xmlDoc....
How do you use https / SSL on localhost?
... property pages, then start options and assign the start URL - put the new https with the new port (usually 44301 - notice the similarity to port 443) and your project will start correctly from then on.
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Abandoning changes without deleting from history
...r you is to mark the old branch as "closed". If your old head is revision "123" then:
hg update -r 123
hg commit --close-branch -m 'Closing old branch'
hg update -C default
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How to convert a color integer to a hex String in Android?
...sses nor java. So you could use it in multiplatform project as well:
fun Int.toRgbString(): String =
"#${red.toStringComponent()}${green.toStringComponent()}${blue.toStringComponent()}".toUpperCase()
fun Int.toArgbString(): String =
"#${alpha.toStringComponent()}${red.toSt...
Using bitwise OR 0 to floor a number
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
How can I move a tag on a git branch to a different commit?
...imately has a problem and needs to be updated/re-released.
git tag -d fix123 # delete the old local tag
git push github :fix123 # delete the old remote tag (use for each affected remote)
git tag fix123 790a621265 # create a new local tag
git push github fix123 ...
Trees in Twitter Bootstrap [closed]
... Where is the collapse expand functionality?
– Syed Aqeel Ashiq
Aug 17 '15 at 13:05
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Pick a random value from an enum?
...otlin Solution
MyEnum.values().random()
random() is a default extension function included in base Kotlin on the Collection object. Kotlin Documentation Link
If you'd like to simplify it with an extension function, try this:
inline fun <reified T : Enum<T>> random(): T = enumValues&l...