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App Inventor 2 项目合并工具 AIMerge · App Inventor 2 中文网
...ick block
The SetTime.Click block opens the SetTime screen. Note that the string assigned to screenName must be exactly what was decided in advance as the name of the second screen.
Figure 3: CountDownScreen1’s Screen1 OtherScreenClosed block
The Screen1.OtherScreenClosed receives the number ...
create a trusted self-signed SSL cert for localhost (for use with Express/Node)
...ating issue in window. 14148:error:0D07A097:asn1 encoding routines:ASN1_mbstring_ncopy:string too long:.\crypto\asn1\a_mbstr.c:158:maxsize=2
– Hermenpreet Singh
Jul 19 at 18:08
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UIButton Long Press Event
... end of the user press.
Note: this works well if you don't care about the extra info provided by the gesture recognizer (e.g. location of touch, etc.)
You can add more intermediate events if needed see them all here https://developer.apple.com/documentation/uikit/uicontrolevents?language=objc.
In...
Isn't it silly that a tiny favicon requires yet another HTTP request? How can I put the favicon into
...feeding it a data URI in the relevant meta tag.
This technique avoids the extra http request and is confirmed to work in recent versions of Chrome, Firefox and Opera on Windows 7. However it doesn't appear to work in Internet Explorer 9 at least.
index.html
<!doctype html>
<html lang="en...
Security of REST authentication schemes
...APIs, it's better for the client to be passing tokens - randomly generated strings - instead of the password the developer logs into the website with. So the developer should be able to log into your site and generate new tokens that can be used for API verification.
The main reason to use a token ...
How to align 3 divs (left/center/right) inside another div?
... edited Jan 11 '13 at 0:52
Extra Savoir-Faire
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answered Jan 11 '13 at 0:35
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newline in [duplicate]
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It displays <br> as text string in Chrome.
– TMa
Apr 27 '15 at 9:56
add a comment
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Prevent users from submitting a form by hitting Enter
...aria-hidden="true" /> and you can reduce the size of your page by a few chars. :-P
– gaefan
Nov 28 '18 at 4:21
7
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How to run a program without an operating system?
...M calls theirs semihosting for example. On real hardware, it requires some extra hardware and software support, but on emulators it can be a free convenient option. Example.
Here we will do a BIOS example as it is simpler on x86. But note that it is not the most robust method.
main.S
.code16
m...
How do I use shell variables in an awk script?
...k:
echo "input data" | awk 'BEGIN {print var}' var="${variable}"
Here-string
Variable can also be added to awk using a here-string from shells that support them (including Bash):
awk '{print $0}' <<< "$variable"
test
This is the same as:
printf '%s' "$variable" | awk '{print $0}'
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