大约有 2,700 项符合查询结果（耗时：0.0172秒） [XML]
mongodb: insert if not exists
...ld say something like "can't Mod the _id field". This was a bug, fixed in v2.5.4 or there abouts. If you see this message or issue, just get the latest version.
– Kieren Johnstone
May 17 '15 at 20:16
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How can I convert JSON to a HashMap using Gson?
...de works:
Gson gson = new Gson();
String json = "{\"k1\":\"v1\",\"k2\":\"v2\"}";
Map<String,Object> map = new HashMap<String,Object>();
map = (Map<String,Object>) gson.fromJson(json, map.getClass());
sha...
How to place div side by side
... polyfill support I'd recommend a service like polyfill.io cdn.polyfill.io/v2/docs or github.com/10up/flexibility but you may have really strict requirements that prevent using polyfills.
– TheMcMurder
Jun 27 '16 at 15:38
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Compiler Ambiguous invocation error - anonymous method and method group with Func or Action
...n to section 6.6, with some emphasis (mine):
An implicit conversion (§6.1) exists
from a method group (§7.1) to a
compatible delegate type. Given a
delegate type D and an expression E
that is classified as a method group,
an implicit conversion exists from E
to D if E contains at l...
Unable to read data from the transport connection : An existing connection was forcibly closed by th
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I had this issue for my Azure Function v2
– Pieter Heemeryck
Mar 9 at 13:59
add a comment
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How to atomically delete keys matching a pattern using Redis
...sclaimer: the following solution doesn't provide atomicity.
Starting with v2.8 you really want to use the SCAN command instead of KEYS[1]. The following Bash script demonstrates deletion of keys by pattern:
#!/bin/bash
if [ $# -ne 3 ]
then
echo "Delete keys from Redis matching a pattern using ...
Get average color of image via Javascript
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AFAIK, the only way to do this is with <canvas/>...
DEMO V2: http://jsfiddle.net/xLF38/818/
Note, this will only work with images on the same domain and in browsers that support HTML5 canvas:
function getAverageRGB(imgEl) {
var blockSize = 5, // only visit every 5 pixels
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App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制 - App Invent...
...时 2024/05/01 之前。App Inventor 2 中文网VIP会员免费享有基础版技术支持服务，有任何问题都可以在线及时得到解决，是创客学习App Inventor 2 必备之利器，欢迎体验！
来自中文网文档：https://www.fun123.cn/reference/iot/ble.html
可以获...
How to send a command to all panes in tmux?
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None of the above answers worked for me (tmux v2.3), but this did, from the bash command line:
for _pane in $(tmux list-panes -a -F '#{pane_id}'); do \
tmux clear-history -t ${_pane} ; done
A more generalized script, for tmux commands other than 'clear-history' wou...
Remove local git tags that are no longer on the remote repository
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Looks like recentish versions of Git (I'm on git v2.20) allow one to simply say
git fetch --prune --prune-tags
Much cleaner!
https://git-scm.com/docs/git-fetch#_pruning
You can also configure git to always prune tags when fetching:
git config fetch.pruneTags true
If...