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Swapping two variable value without using third variable
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Using the xor swap algorithm
void xorSwap (int* x, int* y) {
if (x != y) { //ensure that memory locations are different
*x ^= *y;
*y ^= *x;
*x ^= *y;
}
}
Why the test?
The test is to ensure that x and y hav...
Git error: “Host Key Verification Failed” when connecting to remote repository
I am trying to connect to a remote Git repository that resides on my web server and clone it to my machine.
18 Answers
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Ignore with CSS?
...ss, you can "hide" the br tags and they won't have an effect:
br {
display: none;
}
If you only want to hide some within a specific heading type, just make your css more specific.
h3 br {
display: none;
}
share
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Does SVG support embedding of bitmap images?
Is an SVG image purely vectorial or can we combine bitmap images into an SVG image ?
How about transforms applied on the bitmap images (perspective, mappings, etc.) ?
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How to randomize (or permute) a dataframe rowwise and columnwise?
...1 1 1 0
2 1 0 0
3 0 1 0
4 0 0 0
Shuffle row-wise:
> df2 <- df1[sample(nrow(df1)),]
> df2
a b c
3 0 1 0
4 0 0 0
2 1 0 0
1 1 1 0
By default sample() randomly reorders the elements passed as the first argument. This means that the default size is the size of the passed array. Passing ...
Javascript callback when IFRAME is finished loading?
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First up, going by the function name xssRequest it sounds like you're trying cross site request - which if that's right, you're not going to be able to read the contents of the iframe.
On the other hand, if the iframe's URL is on y...
ASP.NET MVC Custom Error Handling Application_Error Global.asax?
I have some basic code to determine errors in my MVC application. Currently in my project I have a controller called Error with action methods HTTPError404() , HTTPError500() , and General() . They all accept a string parameter error . Using or modifying the code below.
What is the best/prope...
【HarmonyOS】编译、测试全流程 - HarmonyOS NEXT - 清泛IT社区，为创新赋能！
...系概述
HarmonyOS NEXT 对应用安全有严格的要求，任何 HAP（HarmonyOS Ability Package）包都必须经过签名才能安装到真机。
1.1 签名类型
签名类型能否安装能否上架应用市场设备限制证书来源适用场景未签名不能不行--无模拟器调...
How to concatenate string variables in Bash
In PHP, strings are concatenated together as follows:
30 Answers
30
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How do I view the SQL generated by the Entity Framework?
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You can do the following:
IQueryable query = from x in appEntities
where x.id == 32
select x;
var sql = ((System.Data.Objects.ObjectQuery)query).ToTraceString();
or in EF6:
var sql = ((System.Data.Entity.Core.Objects.ObjectQuery)query)
.To...