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How do I exit the results of 'git diff' in Git Bash on windows? [duplicate]
...4.0, although it took a few seconds to complete.
– j4v1
Apr 27 '15 at 14:25
1
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MQTT与TCP的区别 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...的消息服务质量。提供不同等级的“服务质量”。
协议位置TCP是OSI第四层的传输层协议。MQTT是基于TCP的七层应用层协议。
协议定位TCP设计考虑的是面向连接的、可靠的、基于字节流的传输层通信协议。MQTT则是在低带宽高延...
How to add row in JTable?
...);
model.addColumn("Col2");
// Append a row
model.addRow(new Object[]{"v1", "v2"});
share
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...
undefined method `source_index' for Gem:Module (NoMethodError)
...5 had installed RubyGems version 2.0.2 for me, and 1.9.3-p327 has RubyGems v1.8.23 installed.
Gem.source_index has been deprecated for a while, but since Rails 2.3 is not getting any updates except critical security patches, this will never get fixed. RubyGems v2.0 finally removed that method. Down...
Numeric for loop in Django templates
... Generate a string of arbitrary length with 'rjust' {% for i in "x"|rjust:"100" %}
– Aaron
Mar 30 '16 at 19:48
29
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What is content-type and datatype in an AJAX request?
...tion/json and dataType to be text:
$.ajax({
type : "POST",
url : /v1/user,
dataType : "text",
contentType: "application/json",
data : dataAttribute,
success : function() {
},
error : function(error) {
}
});
...
What's the UIScrollView contentInset property for?
...nsider the following example (scroller is a UIScrollView):
float offset = 1000;
[super viewDidLoad];
for (int i=0;i<500; i++) {
UILabel *label = [[[UILabel alloc] initWithFrame:CGRectMake(i * 100, 50, 95, 100)] autorelease];
[label setText:[NSString stringWithFormat:@"label %d",i]];
...
Relative frequencies / proportions with dplyr
..., gear) %>%
summarise (n=n()) %>%
mutate(rel.freq = paste0(round(100 * n/sum(n), 0), "%"))
## am gear n rel.freq
## 1 0 3 15 79%
## 2 0 4 4 21%
## 3 1 4 8 62%
## 4 1 5 5 38%
EDIT Because Spacedman asked for it :-)
as.rel_freq <- function(x, ...
How to change the default GCC compiler in Ubuntu?
...ll g++-4.5
update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.6 100
update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.5 50
update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.6 100
update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.5 50
update-alternatives...
Is there a “goto” statement in bash?
...}
start=${1:-"start"}
jumpto $start
start:
# your script goes here...
x=100
jumpto foo
mid:
x=101
echo "This is not printed!"
foo:
x=${x:-10}
echo x is $x
results in:
$ ./test.sh
x is 100
$ ./test.sh foo
x is 10
$ ./test.sh mid
This is not printed!
x is 101
...