大约有 26,000 项符合查询结果（耗时：0.0352秒） [XML]
Convert string to a variable name
...some other code...
assign(var.name, 5)
#some more code...
#write a script file (1 line in this case) that works with whatever variable name
write(paste0(var.name, " <- 6"), "tmp.R")
#source that script file
source("tmp.R")
#remove the script file for tidiness
file.remove("tmp.R")
x will be cha...
Run a PHP file in a cron job using CPanel
... @SomyA please could you tell me the command for run java script file.
– Narender Reddy
May 23 '18 at 9:42
|
show 5 more comments
...
How do I force Postgres to use a particular index?
...what qualifies for a small table? Is it something like 5000 rows, or 50000 etc?
– waffl
Jul 22 '14 at 8:46
1
...
How do Third-Party “tracking cookies” work?
....com/img.jpg">, then the browser will send the cookie foo=bar when it fetches http://example.com/img.jpg, even though http://example2.com is responsible for the request being sent.
So, if website A contains an ad that is served by website B, then website B can set a cookie in your browser. For ...
Open the file in universal-newline mode using the CSV Django module
I am trying to access a model.filefield in Django to parse a CSV file in Python using the csv module. It's working on Windows, but on Mac it gave me this:
...
Installing SetupTools on 64-bit Windows
..., you can't use a 32-bit installer for 64-bit Python as it includes binary files. But there's a 64-bit installer at http://www.lfd.uci.edu/~gohlke/pythonlibs/ (has many installers for other modules too). Nowadays, many packages on PyPi have binary distributions, so you can install them via pip.
...
git stash blunder: git stash pop and ended up with merge conflicts
I did a git stash pop and ended up with merge conflicts. I removed the files from the file system and did a git checkout as shown below, but it thinks the files are still unmerged. I then tried replacing the files and doing a git checkout again and same result. I event tried forcing it with -...
How to programmatically take a screenshot on Android?
...er your needs are:
First, you need to add a proper permission to save the file:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
And this is the code (running in an Activity):
private void takeScreenshot() {
Date now = new Date();
android.text.format.Dat...
What is the proper way to test if a parameter is empty in a batch file?
...It uses the ability of the CALL command to fail without aborting the batch file.
@echo off
setlocal EnableDelayedExpansion
set "arg1="
call set "arg1=%%1"
if defined arg1 goto :arg_exists
set "arg1=#"
call set "arg1=%%1"
if "!arg1!" EQU "#" (
echo arg1 exists, but can't assigned to a variable...
How can I enable auto complete support in Notepad++?
...
For basic autocompletion, have a look at the files in %ProgramFiles%\Notepad++\plugins\APIs. It's basically just an XML file with keywords in. If you want calltips ("function parameters hint"), check out these instructions.
I've never found any more documentation, bu...