大约有 43,200 项符合查询结果（耗时：0.0261秒） [XML]
How to check whether a string is a valid HTTP URL?
...Http;
Or, if you want to accept both HTTP and HTTPS URLs as valid (per J0e3gan's comment):
Uri uriResult;
bool result = Uri.TryCreate(uriName, UriKind.Absolute, out uriResult)
&& (uriResult.Scheme == Uri.UriSchemeHttp || uriResult.Scheme == Uri.UriSchemeHttps);
...
Repeat each row of data.frame the number of times specified in a column
...anded
See how much faster this solution is:
df <- data.frame(var1=1:2e3, var2=1:2e3, freq=1:2e3)
system.time(df.exp <- df[rep(row.names(df), df$freq), 1:2])
## user system elapsed
## 4.57 0.00 4.56
dt <- data.table(df)
system.time(dt.expanded <- dt[ ,list(freq=rep(1,freq...
How can I round a number in JavaScript? .toFixed() returns a string?
...) / 1e2;
someNumber === 42.01;
// if you need 3 digits, replace 1e2 with 1e3 etc.
// or just copypaste this function to your code:
function toFixedNumber(num, digits, base){
var pow = Math.pow(base||10, digits);
return Math.round(num*pow) / pow;
}
.
Or if you want a “native-like” functi...
Get property value from string using reflection
... edited Nov 2 '14 at 18:04
J0e3gan
8,14799 gold badges4646 silver badges7575 bronze badges
answered Dec 23 '09 at 19:24
...
Python Flask, how to set content type
...tially @SimonSapin's accepted answer repackaged.
– J0e3gan
Jul 31 '15 at 17:35
@J0e3gan thanks. I have expanded my ans...
Rails: How to reference images in CSS within Rails 4
...rs:
background-image: url("/assets/pretty-background-image-8b313354987c309e3cd76eabdb376c1e.jpg");
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Create nice column output in python
...16918', 'For queues and stuff.'],
['app-server', 'b866cd0f-bf80-40c7-84e3-c40891ec68f9', 'linuxnode-4-295918', 'A popular destination.'],
['nginx', '76fea0f0-aa53-4911-b7e4-fae28c2e469b', 'linuxnode-5-292735', 'Traffic Cop'],
]
table = columnar(data, headers, no_borders=True)
print(table)
...
How to retrieve the hash for the current commit in Git?
...or:/dev/shm/mpd/ncmpc/pkg (master)$ git describe --always
release-0.19-11-g7a68a75
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项目管理实践【五】自动编译和发布网站【Using Visual Studio with Source ...
...ence Include="..\DAL\DAL.csproj">
<Project>{AFF6077D-DD2D-48A0-BFAD-051BD67A6953}</Project>
<Name>DAL</Name>
</ProjectReference>
<ProjectReference Include="..\IBLL\IBLL.csproj">
<Project>{620770BB-7A27-4585-9B97-44EEE349121D}</Project>
<Name>IBLL</Name>
</ProjectReference>
<ProjectReference ...
Similar to jQuery .closest() but traversing descendants?
...iv>
<div></div>
</div>
<div id="e3">
<div></div>
<div></div>
<div></div>
</div>
</div>
shar...