parameters

SqlCommand Parameters vs. String.Format [duplicate]

谁都会走 提交于 2020-08-23 03:51:58
问题 This question already has answers here : What is passing parameters to SQL and why do I need it? (5 answers) Closed 6 years ago . I've been searching on the internet, but I just can't seem to find anything that explain my question (could be that I'm not using the correct search string), so I'm posting here hoping that someone can help me with this. (My program is written is C# using Visual Studio 2010) I notice that in C#, there are multiple ways of constructing a SQL command. SqlConnection

SqlCommand Parameters vs. String.Format [duplicate]

天涯浪子 提交于 2020-08-23 03:51:01
问题 This question already has answers here : What is passing parameters to SQL and why do I need it? (5 answers) Closed 6 years ago . I've been searching on the internet, but I just can't seem to find anything that explain my question (could be that I'm not using the correct search string), so I'm posting here hoping that someone can help me with this. (My program is written is C# using Visual Studio 2010) I notice that in C#, there are multiple ways of constructing a SQL command. SqlConnection

How this parameter knows the argument

廉价感情. 提交于 2020-08-10 19:16:48
问题 Im confused with how the elem get the value of arr? function lengGreaterThan(num) { function lengGreaterThanNum(elem) { return elem.length > num; } return lengGreaterThanNum; } let arr = ['Justin', 'caterpillar', 'openhome']; console.log(arr.filter(lengGreaterThan(6))); 回答1: That is a really confusing way of writing it, but essentially you are just putting a function that takes one parameter into the filter function. This here would do the same thing: console.log(arr.filter((elem) => { return