大约有 15,461 项符合查询结果（耗时：0.0215秒） [XML]
Is volatile expensive?
...bly code the run method looks something like:
# {method} 'run2' '()V' in 'Test2'
# [sp+0x10] (sp of caller)
0xb396ce80: mov %eax,-0x3000(%esp)
0xb396ce87: push %ebp
0xb396ce88: sub $0x8,%esp ;*synchronization entry
; - Test2::run2@-1 (...
In the shell, what does “ 2>&1 ” mean?
...
echo test > afile.txt
redirects stdout to afile.txt. This is the same as doing
echo test 1> afile.txt
To redirect stderr, you do:
echo test 2> afile.txt
>& is the syntax to redirect a stream to another file...
Is there an auto increment in sqlite?
..., home_id VARCHAR(25) NOT NULL);
INSERT INTO room(name, home_id) VALUES ('test', 'home id test');
INSERT INTO room(name, home_id) VALUES ('test 2', 'home id test 2');
SELECT * FROM room;
will give:
1|test|home id test
2|test 2|home id test 2
...
Debugging Scala code with simple-build-tool (sbt) and IntelliJ
... code site lists commands for running the main class for a project or the tests, but there seem to be no commands for debugging.
...
How do you tell if a string contains another string in POSIX sh?
...xpansion, so it works in Bash, Dash, KornShell (ksh), Z shell (zsh), etc.
test "${string#*$word}" != "$string" && echo "$word found in $string"
A functionalized version with some examples:
# contains(string, substring)
#
# Returns 0 if the specified string contains the specified substrin...
AssertContains on strings in jUnit
...
... and org.hamcrest.Matchers.containsString; in the latest api, in the hamcrest-library dependency.
– eis
Nov 26 '13 at 14:25
...
What does (x ^ 0x1) != 0 mean?
...expression is true.
Conversely the expression is false if x == 1.
So the test is the same as:
if (x != 1)
and is therefore (arguably) unnecessarily obfuscated.
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Maven: how to do parallel builds?
...are great, but I wanted to add something to the answers here regarding the test stability during parallel builds.
So, when Maven parallel build is used:
mvn -T 4 clean install # Builds with 4 threads
mvn -T 1C clean install # 1 thread per cpu core
mvn -T 1.5C clean install # 1.5 thread per cpu core
...
get all characters to right of last dash
...
You could use LINQ, and save yourself the explicit parsing:
string test = "9586-202-10072";
string lastFragment = test.Split('-').Last();
Console.WriteLine(lastFragment);
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How do I make a simple makefile for gcc on Linux?
...
The simplest make file can be
all : test
test : test.o
gcc -o test test.o
test.o : test.c
gcc -c test.c
clean :
rm test *.o
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