我是Mac的开发新手 - 我用xcode编码,我无法弄清楚如何使用参数启动我的应用程序.我可以导航到应用程序目录并执行以下操作:
open application
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但我做不到:
open application param1 param2
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我错过了什么?
我正在尝试找到一种方法将所有*.exe文件(以及更多,*.dtd,*.obj等)从目录结构复制到另一个路径.
例如,我可能有:
Code
\classdirA
\bin
\classA.exe
\classdirB
\bin
\classB.exe
\classdirC
\bin
\classC.exe
\classdirD
\bin
\classD.exe
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我想将所有*.exe文件复制到一个目录中,比如说c:\bins
最好的方法是什么?
我的系统的约束是:
谁知道我应该在这看什么?
基本上,我想为针对我的 slackbot 的以下任何命令保留打开选项:
@torbot
@torbot [命令]
@torbot [命令] [参数]
下面是我现在一直在用的,但看起来很丑。根据我的经验,通常当某件事看起来很难看时,这意味着可能有一种更直观的方法来完成同样的事情。
class TorbotCommand(object):
def __init__(self, input):
self.__input = input
# TODO: There has to be a better way..
try:
self.__command_string = self.__input['text'].split(' ', 1)[1].strip().lower()
except:
self.__command_string = None
pass
try:
self.__command = self.__command_string.split(' ', 1)[0]
except:
self.__command = None
pass
try:
self.__text = self.__command_string.split(' ', 1)[1]
except:
self.__text = None
pass
def getCommand(self): return self.__command
def getText(self): return self.__text
def getInput(self): return self.__input
Run Code Online (Sandbox Code Playgroud) 我有以下 dockerfile:
FROM haproxy:alpine
RUN apk --update add bash && apk --no-cache add dos2unix rsyslog supervisor wget curl ruby which py-setuptools py-pip && pip install awscli && chmod +x /*.sh
COPY *haproxy.cfg /etc/
COPY supervisord.ini /etc/
COPY rsyslog.conf /etc/
COPY entrypoint.sh /
RUN dos2unix /entrypoint.sh && apt-get --purge remove -y dos2unix
ENTRYPOINT ["/entrypoint.sh"]
EXPOSE 9999
CMD ["/usr/bin/supervisord", "-c", "/etc/supervisord.ini"]
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但是,当我构建它时,我得到:
fetch http://dl-cdn.alpinelinux.org/alpine/v3.5/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.5/community/x86_64/APKINDEX.tar.gz
ERROR: unsatisfiable constraints:
dos2unix (missing):
required by: world[dos2unix]
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我可以看到这里存在这个包:https : //pkgs.alpinelinux.org/packages?name=dos2unix&branch=&repo=&arch=&maintainer=
我究竟做错了什么?
我有一个字符串: {"isRegion":true, "tags":?}
我想加入一个字符串数组代替?
, 用引号括起来。
我目前的尝试不太奏效:
jsonStr := []byte(fmt.Sprintf(`{"isRegion":true, "tags":[%q]}, strings.Join(tags, `","`)))
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以上给出了输出: "tags":["prod\",\"stats"]
相反,我需要引号保持不变而不会转义: "tags":["prod","stats"]
我有以下方法声明:
const String& MyClass::GetAspect(const String& strKey) const
在这个方法中,我们决定在做一些事情之前做一个空指针检查; 如果这个方法里面的指针是null
,我们只想返回null
.
但是,我收到以下错误:
myclass.cpp(222) : error C2440: 'return' : cannot convert from 'int' to 'const String &'
Reason: cannot convert from 'int' to 'const String'
No constructor could take the source type, or constructor overload resolution was ambiguous
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有人能帮我理解吗?是否有一些我不完全理解的const-correctness概念?
我在下面有一个片段 - 我已经tv_usec
用几种方式调整了我,但是select()
无论tv_usec
设置的是什么,我都会在一个循环中停留几乎整整10秒钟.
char buffer[512];
fd_set readfds;
struct timeval tv;
tv.tv_usec = 50;
int rv = 1;
// clear the set ahead of time
FD_ZERO(&readfds);
// add our descriptors to the set
FD_SET(mySocket, &readfds);
// the n param for select()
int n = mySocket + 1;
while(rv != 0)
{
rv = select(n, &readfds, NULL, NULL, &tv);
if (rv == -1)
perror("select"); // error occurred in select()
bzero(buffer,512);
int n = recvfrom(mySocket,buffer,512,0,(struct sockaddr *)&server, …
Run Code Online (Sandbox Code Playgroud) 我试图"打包"一个大的mmap()
d文件,如下所示:
//numBytes is based on user input
data = static_cast<char*>(mmap((caddr_t)0, numBytes, PROT_READ, MAP_SHARED, myFile, 0));
int
Sender::Packetize(char* data, int numBytes)
{
int seqNum = 1;
int offset = 0;
size_t totalPacked = 0;
unsigned int length = sizeof(struct sockaddr_in);
bool dataRemaining = true;
while(dataRemaining)
{
//MTU = 1460
size_t payloadSize;
(numBytes > MTU) ? payloadSize = MTU : payloadSize = numBytes;
char* payload = (char*)malloc(payloadSize);
memcpy(payload, data, payloadSize);
Packet pac = {seqNum, 0, payloadSize, payload}; //Basic struct
totalPacked …
Run Code Online (Sandbox Code Playgroud) 我有一个表,按标题存储请求。我可以使用以下查询它:
SELECT lower(btrim(environment)) as environment,
lower(btrim(title)) as title,
SUM(count) as requests
FROM api_data_analytics
WHERE timestamp BETWEEN '2019-10-01 00:00:00.000000' AND '2019-11-01 00:00:00.000000'
AND environment = 'production'
GROUP BY 1, 2;
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这将产生:
env: title: requests:
production a1 18194440913
production b1 2425465014
production c1 265733967
production d1 92586792
production e1 57150246
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我希望能够执行一个查询,该查询为我提供每个标题的总请求百分比,例如:
env: title: pct_total:
production a1 85.0
production b1 13.2
production c1 1.4
production d1 0.3
production e1 0.1
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获取此数据的最简单方法是什么?
我似乎无法弄清楚为什么我在尝试运行.pl脚本时遇到此错误.
这是脚本:
# mini script for creating diff files in a single directory
# directory of patch files
$patchDir = "c:\oc\Patch Files";
if ($#ARGV != 1 && $#ARGV != 2)
{
print "Usage: diff <file name> [-s]\n";
print "Example: \n";
print " |Diff relative to Index (staged)| : diff MOM00123456_1.patch \n";
print " |Diff Staged| : diff MOM00123456_1.patch -s \n";
exit;
}
$fileName = $ARGV[0];
if ($#ARGV == 2)
$stagedArg = $ARGV[1];
if ($stagedArg)
if ($stagedArg == "-s" || $stagedArg …
Run Code Online (Sandbox Code Playgroud) 我有:
if($^O eq 'MSWin32'){
export WINDOWS=1
else{
export UNIX=1
}
=begin WINDOWS
use feature qw(switch);
=cut
=begin UNIX
use Switch;
=cut
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我得到:
C:\ build.pl第6行的语法错误,"else"附近BEGIN错误后不安全 - 编译在C:\ build.pl第17行中止.
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