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Javascript call() & apply() vs bind()?
...cutes the function immediately:
var person = {
name: "James Smith",
hello: function(thing) {
console.log(this.name + " says hello " + thing);
}
}
person.hello("world"); // output: "James Smith says hello world"
person.hello.call({ name: "Jim Smith" }, "world"); // output: "Jim Smith s...
How to check if a Unix .tar.gz file is a valid file without uncompressing?
...mple of failed tar ball test...
$ echo "this will not pass the test" > hello.tgz
$ tar -xvzf hello.tgz -O > /dev/null
gzip: stdin: not in gzip format
tar: Child returned status 1
tar: Error exit delayed from previous errors
$ rm hello.*
Working Example...
$ ls hello*
ls: hello*: No such fi...
Assign multiple columns using := in data.table, by group
...t!
x <- data.table(a = 1:3, b = 1:6)
f <- function(x) {list("hi", "hello")}
x[ , c("col1", "col2") := f(), by = a][]
# a b col1 col2
# 1: 1 1 hi hello
# 2: 2 2 hi hello
# 3: 3 3 hi hello
# 4: 1 4 hi hello
# 5: 2 5 hi hello
# 6: 3 6 hi hello
x[ , c("mean", "sum") := list(mea...
How to pass parameters in $ajax POST?
... url as parameters, but if I set them directly to the url using /?field1="hello" it works.
9 Answers
...
Windows远程桌面授权错误（授权超时）等报错信息疑难解答 - 更多技术 - 清...
... 在本地安全策略中，打开适当的策略，然后在控制台树中，导航至计算机配置\Windows 设置\安全设置\本地策略\安全选项。接下来，启用“不允许枚举 SAM 帐户与共享”（相当于将RestrictAnonymous 的值设置为1或None）或者“依赖...
OS detecting makefile
...d on five files
├── lib
│ └── Makefile
│ └── hello.h
│ └── hello.c
└── app
└── Makefile
└── main.c
Reminder: Makefile is indented using tabulation. Caution when copy-pasting below sample files.
The two Makefile files
1. lib/Ma...
What does the 'static' keyword do in a class?
...ce members. In the example given, main does not know which instance of the Hello class (and therefore which instance of the Clock class) it should refer to. static members can only refer to static members. Instance members can, of course access static members.
Side note: Of course, static members c...
What is the purpose of .PHONY in a Makefile?
...a directory 'test' following files are present:
prerit@vvdn105:~/test$ ls
hello hello.c makefile
In makefile a rule is defined as follows:
hello:hello.c
cc hello.c -o hello
Now assume that file 'hello' is a text file containing some data, which was created after 'hello.c' file. So the mo...
How do I use grep to search the current directory for all files having the a string “hello” yet disp
... search the current directory for any and all files containing the string "hello" and display only .h and .cc files?
8 Answ...
How do you create different variable names while in a loop? [duplicate]
...dictionary:
d = {}
for x in range(1, 10):
d["string{0}".format(x)] = "Hello"
>>> d["string5"]
'Hello'
>>> d
{'string1': 'Hello',
'string2': 'Hello',
'string3': 'Hello',
'string4': 'Hello',
'string5': 'Hello',
'string6': 'Hello',
'string7': 'Hello',
'string8': 'Hello',...