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Function to convert column number to letter?
...n - checking first if the number is positive, since otherwise you run into errors. if lngcol <=0 then
– Selkie
Nov 29 '17 at 20:52
1
...
How can I color Python logging output?
...ith the logging module, which I eventually did after a couple of tries and errors.
Here is what I end up with:
BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE = range(8)
#The background is set with 40 plus the number of the color, and the foreground with 30
#These are the sequences need to ...
Change Volley timeout duration
... Log.d(TAG, response.toString());
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.d(TAG, "Error: " + error.getMessage());
}
});
myRequest.setRetryPolicy(new DefaultRetryPol...
MQTT物联网协议完全实践指南 · App Inventor 2 中文网
...设置"
// 自动重连和错误恢复
when UrsPahoMqttClient1.ConnectionError errorMessage
do
set Label_ConnectionStatus.Text to "连接错误: " & errorMessage
set Label_ConnectionStatus.TextColor to Red
// 记录错误日志
call logError "MQTT连接错误", errorMessage
//...
What's the difference between lists and tuples?
... and address in a customer record; in fact, doing so would generally be an error, which the tuple's immutability prevents you from committing.
– kindall
Oct 28 '13 at 18:58
4
...
In C++, if throw is an expression, what is its type?
...ote that throw-expression are assignment-expression. So they are a syntax error as an argument to most operators. Obviously, you can hide them in parenthesis, but if they aren't ignored (first argument of builtin operator , for instance), it is a type error.
– AProgrammer
...
How to use getJSON, sending data with post method?
...data contains the JSON object
//textStatus contains the status: success, error, etc
}, "json");
In that call, dataToBeSent could be anything you want, although if are sending the contents of a an html form, you can use the serialize method to create the data for the POST from your form.
var dat...
How to check if mysql database exists
...E = 'DBName'
If you just need to know if a db exists so you won't get an error when you try to create it, simply use (From here):
CREATE DATABASE IF NOT EXISTS DBName;
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可重入函数、不可重入函数及线程安全 - C/C++ - 清泛网 - 专注C/C++及内核技术
...
fchown
lstat
setgid
symlink
aio_error
fcntl
mkdir
setpgid
sysconf
aio_return
fdatasync
mkfifo
setsid
tcdrain
aio_suspend
fork
open
setsockopt...
Best Practice for Exception Handling in a Windows Forms Application?
... as simple as wrapping Main() in a try/catch, failing fast with a graceful error message to the user. This is the "last resort" exception handler.
Preemptive checks are always correct if feasible, but not always perfect. For example, between the code where you check for a file's existence and the n...